ZEPIR0AxS02MODG
ZMOTION™ Detection
Module
Product Specification
PS028408-0312
Copyright ©2012 Zilog, Inc. All rights reserved.
www.zilog.com
ZMOTION Detection Module
Product Specification
ii
Warning: DO NOT USE IN LIFE SUPPORT SYSTEMS.
LIFE SUPPORT POLICY
ZILOG’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE
SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS PRIOR WRITTEN APPROVAL OF
THE PRESIDENT AND GENERAL COUNSEL OF ZILOG CORPORATION.
As used herein
Life support devices or systems are devices which (a) are intended for surgical implant into the body, or (b)
support or sustain life and whose failure to perform when properly used in accordance with instructions for
use provided in the labeling can be reasonably expected to result in a significant injury to the user. A
critical component is any component in a life support device or system whose failure to perform can be
reasonably expected to cause the failure of the life support device or system or to affect its safety or
effectiveness.
Document Disclaimer
©2012 Zilog, Inc All rights reserved. Information in this publication concerning the devices, applications,
or technology described is intended to suggest possible uses and may be superseded. ZILOG, INC. DOES
NOT ASSUME LIABILITY FOR OR PROVIDE A REPRESENTATION OF ACCURACY OF THE
INFORMATION, DEVICES, OR TECHNOLOGY DESCRIBED IN THIS DOCUMENT. ZILOG ALSO
DOES NOT ASSUME LIABILITY FOR INTELLECTUAL PROPERTY INFRINGEMENT RELATED
IN ANY MANNER TO USE OF INFORMATION, DEVICES, OR TECHNOLOGY DESCRIBED
HEREIN OR OTHERWISE. The information contained within this document has been verified according
to the general principles of electrical and mechanical engineering.
ZMOTION and Z8 Encore! XP are trademarks or registered trademarks of Zilog, Inc. (an IXYS
Company). All other product or service names are the property of their respective owners.
PS028408-0312
ZMOTION Detection Module
Product Specification
iii
Revision History
Each instance in the revision history table reflects a change to this document from its previous revision. For more details, refer to the corresponding pages or appropriate links
given in the table below.
Date
Revision
Level
Description
Page
Mar
2012
08
Added Rev B part to Ordering Information table.
56
Apr
2011
07
Update to Module photo; correction to Light Gate description.
2, 5
Nov
2010
06
Updated to new Zilog/IXYS logo.
All
Oct
2010
05
Replaced all instances of ePIR with advanced passive infrared.
All
Sep
2010
04
Fixed formatting and pagination issues.
All
Sep
2010
03
Replaced Zilog logos, ePIR with ZMOTION, and Zdots with Module.
Updated Figure 11.
All
Oct
2008
02
Updated Related Products section (changed 88-pin SOIC to 28-pin SOIC
for Z8FS040AHJ20SG). Removed references to GP and General Purpose.
52
Oct
2008
01
Original issue.
All
PS028408-0312
Revision History
ZMOTION Detection Module
Product Specification
iv
Table of Contents
Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .iii
List of Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi
List of Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
Architectural Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
ZEPIR0AAS02MODG Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Operational Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Setting Operation Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Signal Descriptions, Hardware Interface Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Motion Detect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Light Gate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
SLEEP Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Signal Descriptions, Serial Interface Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Receive Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Transmit Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Motion Detect and Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Light Gate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
SLEEP Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Voltage Brown-Out Protection and Power-On Reset . . . . . . . . . . . . . . . . . . . . . . . . . 8
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Hardware Interface Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
SLEEP Mode in Hardware Interface Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Serial Interface Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
SLEEP Mode in Serial Interface Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Serial Interface Commands and Description . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Serial Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Motion Status Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Light Gate Level Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
PS028408-0312
Table of Contents
ZMOTION Detection Module
Product Specification
v
MD/RST Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MD Activation Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hyper Sense . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hyper Sense Level Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Frequency Response Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Motion Detection Suspend . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Software Revision . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Serial Interface Command Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Motion Detected Unsolicited Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MD Current Active Output Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Range Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Directional Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Module Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sleep Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Detection Pattern . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mechanical Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ZMOTION Detection Module Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Related Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Related Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
19
21
22
24
26
28
30
31
33
35
37
39
41
43
46
48
49
50
52
53
53
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Appendix A. Hardware Interface Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Appendix B. Serial Interface Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Appendix C. Software Revisions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Customer Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
PS028408-0312
Table of Contents
ZMOTION Detection Module
Product Specification
vi
List of Figures
Figure 1. ZMOTION Block Diagram (ZEPIR0AAS02MODG) . . . . . . . . . . . . . . . . . . . 2
Figure 2. The ZMOTION Detection Module (Shown: ZEPIR0AAS02MODG) . . . . . . 3
Figure 3. Power-On Reset Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 4. Voltage Brown-Out Reset Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 5. Read Command Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 6. Write Command Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 7. Confirmed Command Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 8. Detection Pattern . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Figure 9. Mechanical Drawing of the ZMOTION Detection Module
(ZEPIR0AAS02MODG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Figure 10. Mechanical Drawing of the ZMOTION Detection Module
(ZEPIR0ABS02MODG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Figure 11. Schematic of ZMOTION Detection Module . . . . . . . . . . . . . . . . . . . . . . . . . 52
Figure 12. Application Example, Hardware Interface Mode . . . . . . . . . . . . . . . . . . . . . 57
Figure 13. Application Example, Serial Interface Mode . . . . . . . . . . . . . . . . . . . . . . . . . 58
PS028408-0312
List of Figures
ZMOTION Detection Module
Product Specification
vii
List of Tables
Table 1.
Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Table 2.
Delay Time and Voltage on DLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Table 3.
Summary of Serial Interface Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Table 4.
Shortcuts to Light Gate Level Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Table 5.
MD Output Activation Time Values. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Table 6.
MD Output Activation Time Values. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Table 7.
MD Output Activation Time Values. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Table 8.
Shortcuts to Directional Detection Commands. . . . . . . . . . . . . . . . . . . . . . . . 43
Table 9.
Shortcuts to Module Reset Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Table 10. Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Table 11. Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Table 12. Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Table 13. ZMOTION Detection Module Software Revision (Application Software) . . 59
Table 14. ZMOTION Software Engine Revision . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
PS028408-0312
List of Tables
ZMOTION Detection Module
Product Specification
1
Architectural Overview
Zilog’s ZMOTION Detection Module is a complete motion detection solution ideally suited
for applications that need to detect a human presence. It is an excellent solution for detecting
people as they approach entrances, kiosks, product displays, vending machines, appliances
and advertising displays.
The ZMOTION Detection Module is a board-level module that combines the unique features
of Zilog’s Z8FS040 Motion Detection microcontroller with a pyroelectric sensor and a lowprofile lens. The surface-mount pyroelectric sensor and lens combine to provide the lowest
possible profile without sacrificing performance. The module is only 25.5 mm x 16.7 mm
(and less than 10 mm thick) so it can easily fit into many size constrained applications.
The ZMOTION Detection Module is simple to use. It can operate in HARDWARE Mode –
which simply activates an output signal when motion is detected – or in SERIAL Mode,
allowing it to talk to another processor in your system when greater control over motion
detection performance is required. In both modes, sensitivity and output activation time can
be controlled to match application requirements. For applications that require ambient light
sensing, an input supporting an external light sensor is provided for gating motion detection
output.
The ZMOTION Detection Module provides an easy, low-risk solution for your motion
detection requirements.
Features
Key features of the ZMOTION Detection Module include:
• Complete low-profile motion detection solution
• Small form factor: 25.5 mm x 16.7 mm
• Up to 5 m x 5 m, 60-degree detection pattern
• Simple-to-use HARDWARE Mode or advanced SERIAL Mode (UART)
• Flexible control over sensitivity and output activation time
• SLEEP Mode for low power applications
• Support for Ambient Light Sensor input
• Unique Hyper Sense feature automatically increases sensitivity after motion is detected
• Minimal components ensure high reliability
• Application code can be modified to support custom solutions
• Complete evaluation system available
• 8-pin interface connector with two orientations available (right-angle and straight)
• Operates from a 2.7 V to 3.6 V power supply
• Standard operating temperature range: 0°C to 70°C
PS028408-0312
Architectural Overview
ZMOTION Detection Module
Product Specification
2
ZEPIR0AxS02MODG Block Diagram
Figure 1 displays a block diagram of the ZMOTION Detection Module.
Figure 1. ZMOTION Block Diagram (ZEPIR0AxS02MODG)
Figure 2 displays the ZMOTION Detection Module.
Figure 2. The ZMOTION Detection Module (Shown: ZEPIR0AAS02MODG)
PS028408-0312
ZEPIR0AxS02MODG Block Diagram
ZMOTION Detection Module
Product Specification
3
Pin Description
Table 1 lists the pin and signal descriptions for the ZMOTION Detection Module.
Table 1. Pin Description
Pin#
Signal Name
Hardware Interface
Mode
Serial Interface
Mode
Comments
1
GND
Ground
Ground
—
2
VDD
Supply Voltage
Supply Voltage
—
3
RXD/DLY
Delay (DLY; analog
input)
RXD — Receive
Data (digital input)
—
4
TXD/SNS
Sensitivity (SNS;
analog input)
TXD — Transmit
Mode Select during reset
Data (digital output)
5
MD/RST
Motion Detect (digital
output)
Configurable: Reset Default is Reset (RST) in Serial
(RST; digital input); Interface Mode.
Motion Detect (MD;
digital input)
6
LG
Light Gate (analog
input)
Light Gate (analog
input)
If unused, connect to VDD.
7
SLP/DBG
Sleep (SLP; digital
input)
Sleep (SLP; digital
input)
DBG is used for programming
and debug.
8
GND
Ground
Ground
—
Operational Modes
The ZMOTION Detection Module operates in both Hardware Interface and Software
Interface modes; each is described in this section.
Hardware Interface Mode:
•
•
•
•
Provides basic configuration via the hardware interface pins
Allows you to adjust sensitivity and delay
Offers optional ambient light input
Includes a SLEEP Mode to reduce power consumption
Serial Interface Mode:
•
•
•
PS028408-0312
Provides advanced configuration and status via a serial interface
MD, LG and SLP remain functional
The serial interface runs at: 9600 bps, no parity, 8 data bits, 1 stop bit and no flow control
Pin Description
ZMOTION Detection Module
Product Specification
4
Setting Operation Mode
This section briefly outlines how to set Module operation in either Serial Interface or
Hardware Interface modes.
Serial Interface Mode Selection
To select Serial Interface Mode, provide a pull up resistor from TXD/SNS to VDD during
power ON or when exiting SLEEP Mode (typically 100 KΩ). The device detects that the
voltage on the pin is greater than 2.5 V and enables the TXD and RXD signals. MD, LG
and SLP remain active also. This resistor will have no effect on the transmitted data.
Hardware Interface Mode Selection
The Hardware Interface Mode is selected when TXD/SNS is between 0 V and 1.8 V during
power ON or when exiting SLEEP Mode.
For examples of using the ZMOTION Detection Module in Hardware and Serial Interface
Modes, see Appendix A. Hardware Interface Mode on page 57 and Appendix B. Serial
Interface Mode on page 58.
Signal Descriptions, Hardware Interface Mode
This section describes the signals for operating in Hardware Interface mode.
Ground
Both Pin 1 and the Pin 8 ground (GND) signals are tied together on the ZMOTION Detection Module SBC and are connected to power ground.
Supply Voltage
The supply voltage (VDD) provides power to the ZMOTION Detection Module via Pin 2.
For power consumption details, see the Electrical Characteristics chapter on page 54.
Delay
A high-impedance analog input, Pin 3 (RXD/DLY), sets the duration for the Motion
Detect (MD) pin to remain active when motion has been detected. Provide a voltage
between 0 V and 2 V to select a delay of 2 seconds to 15 minutes (see Table 2). Typically, a
simple resistor divider or trim pot is used to set the voltage.
PS028408-0312
Signal Descriptions, Hardware Interface Mode
ZMOTION Detection Module
Product Specification
5
Table 2. Delay Time and Voltage on DLY
Delay Time
Voltage on DLY
2 sec
0V
5 sec
0.2 V
10 sec
0.4 V
30 sec
0.6 V
1 min
0.8 V
2 min
1.0 V
3 min
1.2 V
5 min
1.4 V
10 min
1.6 V
15 min
1.8 V
Sensitivity
A high-impedance analog input, Pin 4 (TXD/SNS) sets the Module’s sensitivity to motion.
Provide a voltage between 0 V and 1.8 V to adjust the sensitivity to meet the application
requirements. A lower voltage means higher sensitivity. Typically, a simple resistor
divider or trim pot is used to set the voltage.
•
•
1.8 V = lowest sensitivity
0 V = highest sensitivity
This signal also determines the interface mode of the Module. At power ON, and when
exiting SLEEP Mode, the signal is sampled; if it is greater than 2.5 V (for example, pulled
to VDD via resistor), then the system enters Serial Interface Mode and the pin is converted
to TXD. If the signal is between 0 V and 1.8 V, Hardware Interface Mode is selected.
Motion Detect
An active Low output, Pin 5 (MD) is activated when motion is detected. The duration in
which this signal remains active is set by the DLY signal. This signal is actively driven
High.
•
•
0 = motion detected
1 = no motion detected
Light Gate
A high-impedance analog input, Pin 6 (LG), should be provided with a voltage that is proportional to the amount of ambient light in the environment (typically provided via a CDS
PS028408-0312
Signal Descriptions, Hardware Interface Mode
ZMOTION Detection Module
Product Specification
6
photocell or similar circuit). The signal is used internally to gate the MD output signal
such that it does not activate in the presence of daytime ambient light. When the voltage
on this pin is lower than 1.0 V, the MD signal will not activate even when motion is
detected. If MD is in an active state when LG transitions below 1.0 V, the current DLY
duration is completed before MD is deactivated. If LG is unused, connect to VDD.
•
•
GND to 1.0 V = MD does not activate when motion is detected
1.0 V to VDD = MD is activated when motion is detected
SLEEP Mode
Pin 7 (SLP) is an active Low digital input. When at logic ‘0’, the Module enters lowpower SLEEP Mode. The Module does not detect any motion and MD is driven inactive.
When SLP is at logic ‘1’, the Module exits SLEEP Mode and begins detecting motion.
This signal must be held at logic ‘1’ during power ON.
•
•
0 = module disabled; low-power SLEEP Mode is active
1 = normal operation
Signal Descriptions, Serial Interface Mode
This section describes the signals for operating in Serial Interface mode.
Ground
Both Pin 1 and Pin 8 ground (GND) signals are tied together on the ZMOTION Detection
Module Single Board Computer and are connected to power ground.
Supply Voltage
The supply voltage (VDD) provides power to the Module via Pin 2. For power consumption details, see the Electrical Characteristics chapter on page 54.
Receive Data
This Pin 3 (RXD/DLY) input is the asynchronous serial input used for sending commands
and configuration to the Module. It operates at 9600 bps, no parity, 8 data bits, 1 stop bit
and no flow control. For a list and description of the commands supported, see Table 3 on
page 14.
Transmit Data
This Pin 4 (TXD/SNS) output is the asynchronous serial data output from the Module in
response to commands and configuration supplied on the RXD line. It operates at 9600
PS028408-0312
Signal Descriptions, Serial Interface Mode
ZMOTION Detection Module
Product Specification
7
bps, no parity, 8 data bits and 1 stop bit. For more information about the serial command
interface, see the Serial Interface Commands and Description section on page 11.
This signal also determines the interface mode of the Module. At power ON, and when
exiting SLEEP Mode, the signal is sampled; if it is higher than 2.5 V (for example, pulled
to VDD via resistor), then the system enters Serial Interface Mode. If the signal is at a
value between 0 V and 1.8 V, Hardware Interface Mode is selected.
Motion Detect and Reset
An active Low output, Pin 5 (MD/RST), is activated when motion is detected. The duration in which this signal remains active is set by the DLY signal. This signal is actively
driven High.
•
•
0 = motion detected
1 = no motion detected
As RST, this pin provides an active Low hardware reset signal for the Module. The function of this pin is selected by the C serial command. The default value for this pin is RST.
Light Gate
A high-impedance analog input, Pin 6 (LG), is used internally to gate the MD signal such
that it does not activate in the presence of daytime ambient light. The voltage applied to
this pin should be proportional to the amount of ambient light in the environment (typically provided via a CDS photocell or similar circuit).
•
•
LG > Light Gate Threshold Register — MD is activated when motion is detected
LG < Light Gate Threshold Register — MD does not activate when motion is detected
If MD is in an active state when LG transitions above the programmed value, the current
DLY time is completed before MD is deactivated.
If LG is unused, connect to VDD.
SLEEP Mode
Pin 7 (SLP) is an active Low digital input. When at logic 0, the Module enters low-power
SLEEP Mode. The Module does not detect any motion and MD is driven inactive. When
SLP is at logic 1, the Module exits SLEEP Mode and begins detecting motion. This signal
must be held at logic 1 during power ON.
•
•
PS028408-0312
0 = module disabled; low-power SLEEP Mode is active
1 = normal operation
Signal Descriptions, Serial Interface Mode
ZMOTION Detection Module
Product Specification
8
Voltage Brown-Out Protection and Power-On Reset
The ZMOTION Detection Module contains an internal Reset Controller with a Power-On
Reset (POR) circuit and Voltage Brown-Out (VBO) protection to ensure proper operation.
When power is first applied, the POR circuit monitors the supply voltage and holds the
Module’s MCU in the Reset state until the supply voltage reaches a safe operating level.
After the supply voltage exceeds the POR voltage threshold (VPOR), the MCU is released
and the Module begins operating. A further delay of typically 20 seconds is included to
allow the pyroelectric sensor to stabilize. This value varies depending on environmental
conditions. After this delay, the system begins to look for motion. Prior to this delay, the
MD signal remains inactive.
Figure 3 displays Power-on Reset operation. See the Electrical Characteristics chapter on
page 54 for the POR voltage threshold (VPOR).
Figure 3. Power-On Reset Operation
The ZMOTION Detection Module provides low Voltage Brown-Out protection to ensure
proper operation when the supply voltage drops below an unsafe level – below the VBO
threshold voltage. The VBO circuit senses this condition and forces the Module into the
Reset state. While the supply voltage remains below the POR voltage threshold (VPOR),
the VBO block holds the Module in the Reset.
After the supply voltage again exceeds the Power-On Reset voltage threshold, the Module
progresses through a full Power-On Reset sequence, as described in the Power-On Reset
section. Figure 4 displays the Voltage Brown-Out operation. See the Electrical Characteristics chapter on page 54 for the VBO voltage threshold (VVBO).
PS028408-0312
Voltage Brown-Out Protection and Power-On Reset
ZMOTION Detection Module
Product Specification
9
Figure 4. Voltage Brown-Out Reset Operation
Operation
When power is applied, the TXD/SNS pin is sampled to determine the mode of operation.
If the signal is above 2.5 V, serial interface mode is entered. If the signal is between 0 V
and 1.8 V hardware interface mode is entered. During this time, the pyroelectric sensor is
monitored and the device waits for it to become ready. Once it is stable, the device starts
normal operation in the selected mode. In hardware interface mode, the DLY, SNS, LG
and SLP signals are sampled regularly. In serial interface mode, TXD/RXD are used to
communicate with the device and LG, SLP and MD also provide their defined functions.
Hardware Interface Mode
This mode of operation is selected when the SNS pin is at a value between 0 V and 1.8 V
during power ON (or after a reset caused by VBO). Once Hardware Interface mode has
been established, this pin becomes the sensitivity input and accepts a voltage between 0 V
and 1.8 V to set the motion detection sensitivity level.
•
•
0 V = highest sensitivity
1.8 V = lowest sensitivity
These sensitivity levels are normally achieved with a simple resistor divider or potentiometer resistor divider.
PS028408-0312
Operation
ZMOTION Detection Module
Product Specification
10
After application of power, the PIR sensor is allowed to stabilize. At this point, the MCU
waits for the PIR sensor to stabilize; this period is typically 20 seconds but varies depending on environmental conditions. The software dynamically monitors the pyroelectric sensor during power up and begins detecting motion as soon as the sensor is stable.
The MD (Motion Detect) pin is driven active (Low) when motion is detected. The duration in which the signal remains active is determined by the voltage on the delay pin and
can be set to a value between 2 seconds and 15 minutes. See Table 2 on page 5.
The Light Gate signal acts as a disable (gate) for the MD signal. In a typical application,
this signal is a representation of the ambient light in the environment. If there is light
detected, the MD signal does not activate, even in the presence of motion. For an example
showing how to use the ZMOTION Detection Module in Hardware Interface Mode, see
Appendix A. Hardware Interface Mode on page 57.
SLEEP Mode in Hardware Interface Mode
In applications where motion detection is not always required, the Sleep signal can be
used to put the device into a low power mode. The advantage of this feature vs. removing
power from the Module is that the PIR stabilization time is much shorter.
If the Sleep (SLP) input signal is driven Low, the device enters a low power SLEEP Mode
and is awakened by deactivating the signal (driving the signal High).
Serial Interface Mode
The Serial Interface mode is implemented as a superset of the features available in Hardware interface mode. The interfacing device (Host) has an expanded feature set and more
flexibility with many of those features. The interface is designed to be simple to implement on the host processor and use as few resources as possible.
This mode of operation is selected when the SNS pin is above 2.5 V during power ON (or
after a reset caused by VBO). Typically this signal is tied to VDD through a pull-up resistor.
Once Serial Interface mode has been established, this pin becomes the Transmit Data
(TXD) output and is used to send responses to commands given to the device.
The serial interface is asynchronous and is set to:
•
•
•
•
•
PS028408-0312
9600 baud
No parity
8 data bits
1 stop bit
No flow control
Serial Interface Mode
ZMOTION Detection Module
Product Specification
11
In Serial Interface Mode, commands are sent to the device over the RXD input pin and
responses are sent from the device over the TXD output pin. The other signals on the
device (MD, LG, SLP) remain active in Serial Interface mode.
Motion Detect (MD) output is driven active for the time set by the Output Activation Time
command when motion is detected. The signal is also gated by the (Light Gate) LG input.
For an example of how to use the ZMOTION Detection Module in Serial Interface Mode,
see Appendix A. Hardware Interface Mode on page 57.
SLEEP Mode in Serial Interface Mode
In applications where motion detection is not always required, the Sleep signal can be
used to put the device into a low power mode. The advantage of this feature vs. removing
power from the Module is that the PIR stabilization time is much shorter.
If the Sleep (SLP) input signal is driven Low, the device enters a low-power SLEEP Mode
and is awakened by either deactivating the signal (driving the signal High) or sending a
character over the serial interface; the character is received and processed.
Serial Interface Commands and Description
The Serial Interface operates as a Host/Client relationship in which the Module is the client. Commands are sent from the Host and the Module responds with the requested information or confirmation. The only exception is when the Module is configured for MD
Unsolicited operation. In this mode, the Module will send Motion Detected information
without first receiving a command from the host. All commands sent to the ZMOTION
Detection Module are in ASCII character format; however, the data sent to and from the
Module may be in ASCII or decimal formats.
There are three types of command structures accepted by the ZMOTION Detection Module; each is described in this section.
•
•
•
Read commands
Write commands
Confirmation commands
Read Command Structure
Read commands are used to request information from the ZMOTION Detection Module,
and are sent from the Host. The Module responds with the requested data.
•
•
PS028408-0312
All Read commands are initiated by single lower-case letters.
When a Read command is received, the Module returns the applicable value, as described in the Serial Commands section on page 15. See the example in Figure 5.
Serial Interface Mode
ZMOTION Detection Module
Product Specification
12
Command
Host
Response
ZMOTION Module
Figure 5. Read Command Structure
Write Command Structure
Write commands are used to update the configuration of the ZMOTION Detection Module, and are sent from the Host. The Module responds with the current value as an
acknowledgment. The Host then sends the new data and the Module responds with an
ACK.
•
•
All write commands are initiated by single upper-case letters.
•
When the data value is received, the device returns an ACK. If no data is received after
the inactivity time-out period of 2.5 seconds, the device returns a NACK. See the example in Figure 6.
After a write command is received, the device returns the current value and expects an
appropriate single-byte data value.
Command
Current Value
Host
ZMOTION Module
New Value
ACK
Figure 6. Write Command Structure
Confirmed Command Structure
Certain commands require a specific sequence of characters to be sent to prevent accidental initiation. These commands require a 4-character confirmation sequence. After a command requiring confirmation is received, the device returns an ACK.
•
•
PS028408-0312
If the sequence is correct, the device returns an ACK and executes the command.
If the sequence is incorrect, or if there is an inactivity delay of more than 2.5 seconds
between any characters of the sequence, the device immediately sends a NACK and
does not execute the command. See the example in Figure 7.
Serial Interface Mode
ZMOTION Detection Module
Product Specification
13
Command
ACK
Host
ZMOTION Module
Sequence(4)
ACK
Figure 7. Confirmed Command Structure
Notes: ACK = 0x06 (ASCII ACK character).
NACK = 0x15 (ASCII NACK character). The Module will respond with a
NACK on all unrecognized commands, and when commands requiring data (that
is, Write, Clear, and Confirmation types) do not receive the required data within
the inactivity time-out period.
PS028408-0312
Serial Interface Mode
ZMOTION Detection Module
Product Specification
14
Table 3. Summary of Serial Interface Commands
Command Name
Value
[Default]
Value
[Default]
Command Name
0x43–'C'
Write MD/RST Pin
Configuration
'M', 'R'
0x64–'d'
Read MD Activation Time
0–255
[2]
0x44–'D'
Write MD Activation Time
0–255
0x65–'e'
Read Hyper Sense Setting
'Y', 'N'
[N]
0x45–'E'
Write Hyper Sense Setting
'Y', 'N'
0x66–'f'
Read Frequency Response
Setting
'H', 'L'
[L]
0x46–'F'
Write Frequency Response
Setting
'H', 'L'
0x67–'g'
Read Hyper Sense Level
0x47–'G'
Write Hyper Sense Level
0–3
0x68–'h'
Read Motion Detection
Suspend Setting
'Y', 'N'
[N]
0x48–'H'
Write Motion Detection
Suspend Setting
'Y', 'N'
0x69–'i'
Read Module Software
Revision
0–255,
0–255
[6,4]
0x4B–'K'
Write Serial Interface
Command Mode
'D', 'A'
0x6B–'k'
Read Serial Interface
Command Mode
'D', 'A'
[D]
0x4C–'L'
Write Light Gate Threshold
0–255
0x6C–'l'
Read Light Gate Threshold
0–255
[100]
0x4F–'O'
Write MD Output State
0–255
0x6D–'m’
Read Motion Detected
Unsolicited Mode
‘Y’,’N’
[N]
0x50–'P'
Write Ping Value
0–255
0x4D–'M’
Write Motion Detected
Unsolicited Mode
‘Y’,’N’
0x52–'R'
Write Range Setting
0–7
0x6F–'o'
Read MD Current Output
Active Time
0–255
[0]
0x53–'S'
Write Sensitivity
0–255
0x70–'p'
Read Ping Value
0–255
[1]
0x55–'U'
Write Dual Directional
Mode
'Y', 'N'
0x72–'r'
Read Range Setting
0x58–'X'
Module Reset
'1', '2', '3',
'4'
0x73–'s'
Read Sensitivity
0–255
[16]
0x59–'Y'
Write Sleep Time
0–255
0x75–'u'
Read Dual Directional
Mode
'Y', 'N'
[N]
0x5A–'Z'
SLEEP Mode
'1', '2', '3',
'4'
0x76–'v'
Read Single Directional
Mode
'A', '+', '-'
[A]
0x61–'a'
Read Motion Status
‘Y’, ‘N’,
‘U’
0x56–'V'
Write Single Directional
Mode
'A', '+', '-'
0x62–'b’
Read Current Light Gate
Input Level
0–255
0x79–'y'
Read Sleep Time
0x63–'c'
Read MD/RST Pin
Configuration
'M', 'R'
[R]
PS028408-0312
0–3
[1]
0–7
[2]
0–255
[0]
Serial Interface Mode
ZMOTION Detection Module
Product Specification
15
Serial Commands
The Serial Interface commands summarized in Table 3 are each described in this section.
Motion Status Command
The current status of detected motion can be read and cleared through this command.
When motion has been detected the value is set to 'Y' and latched until read with the 'a'
command. Once cleared, the status remains at 'N' until motion is again detected.
Read Motion Status
Command
‘a’ (0x61)
Description
The Read Motion Status command returns the current status of detected motion. The current status is set to 'N' when read.
Return Values
'Y' = Motion detected
'N' = No motion detected
'U' = PIR Sensor has not stabilized after power-up
Normal Command Sequence
“a”
Host
[“Y”, “N”, “U”]
ZMOTION Module
Note: The returned value ('Y', 'N', 'U') is independent of the MD output state or the MD
Activation Time (see commands 'o'/'O' and 'd'/'D').
PS028408-0312
Serial Commands
ZMOTION Detection Module
Product Specification
16
Light Gate Level Commands
Light Gate Level commands control and monitor the signal associated with the Light Gate
(LG) pin, and they are typically relative to the ambient light detected by an externally connected CDS photocell. The range is 0 to 255, with 0 indicating maximum ambient light
and, 255 indicating minimum ambient light. See Appendix A. Hardware Interface Mode
on page 57 and Appendix B. Serial Interface Mode on page 58 for recommended CDS
photocell connections. The 'b' command reads the current signal level present on the pin.
The ‘L’ command sets the Light Gate Threshold value. This value is used in conjunction
with the signal on the LG pin to internally gate the MD signal such that it does not activate
in the presence of ambient light. When the signal on the Light Gate (LG) pin is below this
value, the MD output signal remains inactive even when motion has been detected. When
the signal on the Light Gate (LG) pin is above this value, the MD signal activates normally
when motion has been detected.
Table 4 lists the pages in this section that describe their respective commands.
Table 4. Shortcuts to Light Gate Level Commands
Name
Command
Page
Read Current Light Gate Input Level
‘b’ (0x62)
16
Read Light Gate Threshold
‘l’ (0x6C)
17
Write Light Gate Threshold
‘L’ (0x4C)
17
Read Current Light Gate Input Level
Command
‘b’ (0x62)
Description
The ‘b’ command returns the current signal level present on the Light Gate (LG) pin.
Return Values
0–255 (decimal)
Normal Command Sequence
“b”
Host
PS028408-0312
[0 – 255]
ZMOTION
Module
Serial Commands
ZMOTION Detection Module
Product Specification
17
Read Light Gate Threshold
Command
‘l’ (0x6C)
Description
The ‘1’ command returns the current Light Gate threshold value set by the Write Light
Gate Threshold command.
Return Values
0–255 (decimal)
Normal Command Sequence
“l”
Host
[0 – 255]
ZMOTION
Module
Write Light Gate Threshold
Command
‘L’ (0x4C)
Description
The ‘L’ command sets the Light Gate Threshold value.
Input Values
0–255 (decimal)
Normal Command Sequence
“L”
[0–255] Current Value
Host
[0 – 255]
ZMOTION
Module
ACK
PS028408-0312
Serial Commands
ZMOTION Detection Module
Product Specification
18
MD/RST Pin Configuration
The MD/RST pin can be configured to function as either the Motion Detect output or the
Reset input. This command selects between the two modes. As RST, a Low on this pin
causes the Module to perform a full hardware reset. See Signal Descriptions, Serial Interface Mode on page 6 for more information.
Read MD/RST Pin Configuration
Command
‘c’ (0x63)
Description
This Read command returns the configuration mode of the MD/RST pin as set by the ‘C’
command.
Return Values
'M' = MD/RST pin configured as MD
'R' = MD/RST pin configured as RST
Normal Command Sequence
“c”
Host
[“M”, “R”]
ZMOTION
Module
Write MD/RST Pin Configuration
Command
‘C’ (0x43)
Description
Configures the MD/RST pin as either Motion Detect output (MD) or Module Reset (RST).
Input Values
'M' = Configure MD/RST pin as MD
'R' = Configure MD/RST pin as /RST
PS028408-0312
Serial Commands
ZMOTION Detection Module
Product Specification
19
Normal Command Sequence
“C”
[“M”, “R”]
Host
[“M”, “R”]
ZMOTION
Module
ACK
PS028408-0312
Serial Commands
ZMOTION Detection Module
Product Specification
20
MD Activation Time
The duration in which the MD pin is held active when motion is detected is configured by
this command. See Table 5 for corresponding values.
Table 5. MD Output Activation Time Values
Command Value
MD Output Activation Time
0
Output does not activate upon motion.
1–127
1–127 seconds.
128
Output does not activate upon motion.
129–255
1–128 minutes.
Read MD Activation Time
Command
‘d’ (0x64)
Description
Returns the MD pin output activation time value used when motion is detected.
Return Values
0–255 (decimal); see Table 5.
Normal Command Sequence
“d”
Host
[0 – 255]
ZMOTION
Module
Write MD Activation Time
Command
‘D’ (0x44)
Description
Selects the MD pin output activation time value used when motion is detected.
PS028408-0312
Serial Commands
ZMOTION Detection Module
Product Specification
21
Input Values
0–255 (decimal); see Table 5.
Normal Command Sequence
“D”
[0–255] Current Value
Host
[0 – 255]
ZMOTION
Module
ACK
Hyper Sense
Hyper Sense Mode allows smaller signal changes to be considered valid motion events.
This mode significantly increases sensitivity at the cost of more potential false motion
detections. The typical application for this mode is in occupancy sensing where it is
enabled after valid 'normal' motion has already been detected.
Read Hyper Sense Setting
Command
‘e’ (0x65)
Description
This command returns the current status of the Hyper Sense setting.
Return Values
'Y' = Hyper Sense Enabled
'N' = Hyper Sense Disabled
Normal Command Sequence
“e”
Host
PS028408-0312
[“Y”, “N”]
ZMOTION
Module
Serial Commands
ZMOTION Detection Module
Product Specification
22
Write Hyper Sense Setting
Command
‘E’ (0x45)
Description
This command enables and disables Hyper Sense mode.
Input Values
'Y' = Hyper Sense Enabled
'N' = Hyper Sense Disabled
Normal Command Sequence
“E”
[“Y”,“N”] Current Value
Host
[“Y”, “N”]
ZMOTION
Module
ACK
PS028408-0312
Serial Commands
ZMOTION Detection Module
Product Specification
23
Hyper Sense Level Setting
This command defines the Hyper Sense sensitivity level when the mode is enabled via the
'E' command. The purpose of the Hyper Sense mode is to increase the detectors sensitivity
to more subtle motion events. A value of 0 to 3 is used to set the level. Setting the level to
0 has the same effect as disabling Hyper Sense with the 'E' command (setting it to 'N').
Setting it to any other level can cause the occasional false detection, so this mode should
only be used when the occasional false detection is tolerable.
Read Hyper Sense Level Setting
Command
'g' (0x67)
Description
This command returns the current Hyper Sense level that will be used when the Hyper
Sense mode is enabled via the 'E' command. 0 is the lowest setting and corresponds to off,
while 3 is the most sensitive setting.
Return Values
0-3 (decimal)
Normal Command Sequence
“g”
Host
[0-3]
ZMOTION
Module
Write Hyper Sense Level Setting
Command
'G' (0x47)
Description
This command sets the Hyper Sense level used when it is enabled via the 'E' command. If
Hyper Sense is currently on ('E' set to 'Y') when a new level is written, the new level is
automatically used.
PS028408-0312
Serial Commands
ZMOTION Detection Module
Product Specification
24
Input Values
0-3 (decimal)
Normal Command Sequence
“G”
[0–3] Current Value
Host
[0–3]
ZMOTION
Module
ACK
PS028408-0312
Serial Commands
ZMOTION Detection Module
Product Specification
25
Frequency Response Setting
The Frequency Response setting controls sensitivity to targets producing lower frequencies. When set to ‘H’, sensitivity to targets producing lower frequencies is reduced. This
reduced sensitivity also has the effect of reducing the distance over which the ZMOTION
Detection Module can detect motion.
Read Frequency Response Setting
Command
‘f’ (0x66)
Description
This command returns the current frequency response setting of the Module.
Return Values
L = low and high frequency targets detected
H = low frequency target sensitivity reduced
Normal Command Sequence
“f”
Host
[“L”, “H”]
ZMOTION
Module
Write Frequency Response Setting
Command
‘F’ (0x46)
Description
This command sets the Frequency Response of the Module.
Input Values
L = low and high frequency targets detected
H = low frequency target sensitivity reduced
PS028408-0312
Serial Commands
ZMOTION Detection Module
Product Specification
26
Normal Command Sequence
“F”
[“L”,“H”] Current Value
Host
[“L” , “H”]
ZMOTION
Module
ACK
PS028408-0312
Serial Commands
ZMOTION Detection Module
Product Specification
27
Motion Detection Suspend
This command enables and disables motion detection by the ZMOTION Detection Module. When set to ‘N’, the Module detects motion. When set to ‘Y’, motion detection is suspended. While Motion Detection Suspend is a method to temporarily disable motion
detection, the MD pin may still be manually driven active/inactive via the ‘O’ (Write MD
Output State) command.
Read Motion Detection Suspend Setting
Command
‘h’ (0x68)
Description
This read command returns the current Motion Detection Suspend setting.
Return Values
Y = Motion Detection is suspended
N = Motion Detection is active
Normal Command Sequence
“h”
Host
[“Y”, “N”]
ZMOTION
Module
Write Motion Detection Suspend Setting
Command
‘H’ (0x48)
Description
This write command enables and disables motion detection by the ZMOTION Detection
Module.
Input Values
Y = Motion detection is suspended
N = Motion detection is active
PS028408-0312
Serial Commands
ZMOTION Detection Module
Product Specification
28
Normal Command Sequence
“H”
[“Y”,“N”] Current Value
Host
[“Y”, “N”]
ZMOTION
Module
ACK
PS028408-0312
Serial Commands
ZMOTION Detection Module
Product Specification
29
Software Revision
The software in the ZMOTION Detection Module is made up of two parts:
•
•
Advanced passive infrared software engine
Application software
The S/W Revision command returns the revisions of this software.
The advanced passive infrared software engine is locked into the device and cannot be
changed. This software provides all of the algorithms and processing functions required
for motion detection–Refer to product specification for the Z8FS040 ZMOTION MCU for
more details on the operation of this software.
The application software provides the Serial and H/W Interface Mode functionality. It uses
the services provided by the advanced passive infrared software engine for all of the
motion detection functions. This application software is available for download and can be
modified for custom applications. Please see the Zilog Web Site to obtain the application
software project.
See Appendix C. Software Revisions on page 59 for version information.
Software Revision
Command
‘i’ (0x69)
Description
The ‘i’ command returns the revision of the software programmed into the ZMOTION
Detection Module. The first value returned is the application software revision. The second value returned is the advanced passive infrared software engine revision. See Table 13
and Table 14 in Appendix C for a description of software revisions.
Return Values
VAL1 = 0–255 (decimal); Application Software Version
VAL2 = 0–255 (decimal); ZMOTION Software Engine Version
Normal Command Sequence
“i”
Host
PS028408-0312
VAL1, VAL2
ZMOTION
Module
Serial Commands
ZMOTION Detection Module
Product Specification
30
Serial Interface Command Mode
The serial interface can operate in either ASCII or ASCII/Decimal modes. The default is
ASCII/Decimal where commands are sent as ASCII characters, but numeric values sent
and returned are decimal. In ASCII mode, all commands and numeric values are sent and
returned in ASCII, which is useful for demonstration purposes or when using a terminal to
control and monitor the ZMOTION Detection Module (see Table 6).
For example, the data for the Sensitivity command is a value from 0 to 255. In ASCII/Decimal mode, this data would be sent as a single byte (0x00 to 0xFF). In ASCII mode, this
data would be sent as 3 bytes: '0','0','0' to '2','5','5'. All values are sent as 3 characters.
Table 6. MD Output Activation Time Values
Command Value
MD Output Activation Time
0
Output does not activate upon motion.
1–127
1–127 seconds.
128
Output does not activate upon motion.
129–255
1–128 minutes.
Read Serial Interface Command Mode
Command
‘k’ (0x6B)
Description
This command returns the current command interface mode.
Return Values
'A' = ASCII Mode enabled
'D' = ASCII/Decimal Mode enabled (default)
Normal Command Sequence
“k”
Host
PS028408-0312
[“A”, “D”]
ZMOTION
Module
Serial Commands
ZMOTION Detection Module
Product Specification
31
Write Serial Interface Command Mode
Command
“K” (0x4B)
Description
This command selects the command interface mode.
Input Values
'A' = ASCII Mode enabled
'D' = ASCII/Decimal Mode enabled
Normal Command Sequence
“K”
[“A”,“D”] Current Value
Host
[“A”, “D”]
ZMOTION
Module
ACK
s
PS028408-0312
Serial Commands
ZMOTION Detection Module
Product Specification
32
Motion Detected Unsolicited Mode
This mode allows the ZMOTION Detection Module to send motion detection status to the
Host unsolicited (without first sending the 'a' command). The Module will send an 'M' to
the Host every time motion is detected. When Unsolicited mode is not used, the Host must
poll the Module using the 'a' command or read the Current Output Active Time using the
‘o’ to determine motion detection status.
Read Motion Detected Unsolicited Mode
Command
‘m’ (0x6D)
Description
This read command returns the Motion Detected Unsolicited Mode currently selected.
Return Values
‘Y’ = Unsolicited Mode is enabled; the Module sends an 'M' each time motion is detected.
‘N' = Unsolicited Mode is disabled.
Normal Command Sequence
“m”
Host
[“Y”, “N”]
ZMOTION
Module
Write Motion Detected Unsolicited Mode
Command
‘M’ (0x4D)
Description
Enable/disable Motion Detected Unsolicited Mode.
Input Values
'Y' = Unsolicited Mode is enabled; the Module sends an 'M' each time motion is detected.
'N' = Unsolicited Mode is disabled.
PS028408-0312
Serial Commands
ZMOTION Detection Module
Product Specification
33
Normal Command Sequence
“M”
[“Y”,“N”] Current Value
Host
[“Y”, “N”]
ZMOTION
Module
ACK
PS028408-0312
Serial Commands
ZMOTION Detection Module
Product Specification
34
MD Current Active Output Time
This command directly controls the MD output pin. The ‘O’ command activates the MD
output pin for the amount of time specified in the command; it is a manual override of the
current state of MD and is independent of motion detection. The valid range is listed in
Table 7. The ‘o’ command is used to read the remaining time in which MD will be held
active–as initiated by this command or by detected motion. If motion is detected after the
‘O’ command is given, the MD output time restarts at the MD Activation Time set by the
‘D’ command.
Table 7. MD Output Activation Time Values
Command
Value
MD Output Activation Time
0
Output does not activate upon motion.
1–127
1–127 seconds.
128
Output does not activate upon motion.
129–255
1–128 minutes.
Read MD Current Output Active Time
Command
‘o’ (0x6F)
Description
Returns the remaining time in which the MD output pin will be held active.
Return Values
0–255 (decimal); see Table 7.
Normal Command Sequence
“o”
Host
[0 – 255]
ZMOTION
Module
Note: This command is still valid if the MD pin is configured for RST. The command
returns the state of MD pin as if it was configured to indicate motion.
PS028408-0312
Serial Commands
ZMOTION Detection Module
Product Specification
35
Write MD Output State
Command
‘O’ (0x4F)
Description
Activates the MD output pin for the duration of activation time required.
Input Values
0–255 (decimal); MD activated for a selected duration of time; see Table 7.
Normal Command Sequence
“O”
[0–255] Current Value
Host
[0 – 255]
ZMOTION
Module
ACK
Notes: This command does not affect the Read Motion Status command (‘a’) or the
Clear Motion Status command (‘A’).
If the MD pin is configured as Reset, the value is saved as if the MD pin is configured to indicate motion.
PS028408-0312
Serial Commands
ZMOTION Detection Module
Product Specification
36
Ping
This command provides a simple method to ping the ZMOTION Detection Module to
ensure it is responding to commands. The ‘P’ command writes a value (typically a 1 or a
2) that can be read back using the ‘p’ command. The ‘P’ command only accepts a single
written character whether it is in ASCII mode or ASCII/Decimal mode (‘K’ command).
For example, sending the command ‘P’, ‘1’ will return '0', '4', '9' in ASCII mode and 0x31
(49 decimal) in ASCII/Decimal mode.
Read Ping Value
Command
‘p’ (0x70)
Description
This command returns the last written Ping value.
Return Values
Last value written using the ‘P’ command. The default value is 1.
Normal Command Sequence
“p”
Host
[Return Value]
ZMOTION
Module
Write Ping Value
Command
‘P’ (0x50)
Description
This write command stores a value that can be read by the ‘p’ command.
Input Values
0–255 (decimal); a value is stored and read by the 'p' command.
PS028408-0312
Serial Commands
ZMOTION Detection Module
Product Specification
37
Normal Command Sequence
“P”
[Current Value]
Host
[New Value]
ZMOTION
Module
ACK
PS028408-0312
Serial Commands
ZMOTION Detection Module
Product Specification
38
Range Setting
This command determines the relative range of motion detection. Larger values decrease
the range of detection. Range is also dependent on target size, speed and relative temperature. For example, a range control setting that rejects one target of a particular size at a
given distance does not guarantee that a larger target will be rejected at the same distance.
Read Range Setting
Command
‘r’ (0x72)
Description
This command returns the current range setting.
Return Values
0–7 (decimal)
Normal Command Sequence
“r”
Host
[0-7]
ZMOTION
Module
Write Range Setting
Command
‘R’ (0x52)
Description
This command sets the Range value.
Input Values
0–7 (decimal)
PS028408-0312
Serial Commands
ZMOTION Detection Module
Product Specification
39
Normal Command Sequence
“R”
[0–7] Current Value
Host
[0–7]
ZMOTION
Module
ACK
PS028408-0312
Serial Commands
ZMOTION Detection Module
Product Specification
40
Sensitivity
This command controls how sensitive the ZMOTION Detection Module is to motion.
Larger values provide lower sensitivity and also have the effect of reducing the range.
Smaller values provide higher sensitivity.
Read Sensitivity
Command
‘s’ (0x73)
Description
This command returns the current motion detection sensitivity setting.
Return Values
0–255 (decimal)
Normal Command Sequence
“s”
Host
[0 – 255]
ZMOTION
Module
Write Sensitivity
Command
‘S’ (0x53)
Description
This command sets the motion detection sensitivity.
Input Values
0–255 (decimal)
PS028408-0312
Serial Commands
ZMOTION Detection Module
Product Specification
41
Normal Command Sequence
“S”
[0–255] Current Value
Host
[0 – 255]
ZMOTION
Module
ACK
PS028408-0312
Serial Commands
ZMOTION Detection Module
Product Specification
42
Directional Detection
Directional Detection places the ZMOTION Detection Module in a mode that detects both
positive and negative motion directions. When Dual Direction Mode is enabled via the 'U'
command, motion is detected in either direction and the 'a' and 'M' commands are
enhanced to respond with a '+' or '-' to indicate the direction of the motion target. Single
Direction Mode is enabled via the 'V' command and is similar to the 'U' command except
motion is detected in only one of the '+' or '-' directions as set when the 'V' command is
issued. The 'a' and 'M' commands are not modified when in Single Direction Mode.
The signal generated by the pyroelectric sensor used to discern direction can vary from
device to device, but is consistent for a particular device. Therefore, the '+' and '-' direction
settings can mean either left to right or right to left motion, but will always be the same for
that particular device. Each device can be calibrated simply by creating motion in one or
both directions and observing the results. Other factors such as where the target starts
motion will affect the directional detection capabilities of the ZMOTION Detection Module. Directional detection works best when the target moves horizontally starting from outside of the range (left or right side) of Module and through the beams of the detection
pattern. If the target begins motion while inside the Module detection pattern area, an
incorrect direction can be reported.
Table 8 lists the pages in this section that describe their respective commands.
Table 8. Shortcuts to Directional Detection Commands
Name
Command
Page
Read Dual Direction Mode
‘u’ (0x75)
42
Write Dual Direction Mode
‘U’ (0x55)
43
Read Single Direction Mode
‘v’ (0x76)
43
Write Single Direction Mode
‘V’ (0x56)
44
Read Dual Direction Mode
Command
‘u’ (0x75)
Description
The 'u' command returns the current Dual Direction Mode setting.
Return Values
'N' = Dual Direction Mode disabled.
'Y' = Dual Direction Mode enabled.
PS028408-0312
Serial Commands
ZMOTION Detection Module
Product Specification
43
Normal Command Sequence
“u”
Host
[“Y”, “N”]
ZMOTION
Module
Write Dual Direction Mode
Command
‘U’ (0x55)
Description
Enable directional detection in both '+' and '-' directions.
When Dual Direction mode is enabled, the 'a' command (Read Motion Status) and 'M'
command (Motion Detected Unsolicited Mode) provide the directional information:
'+' = Motion detected in the '+' direction.
'-' = Motion detected in the '-' direction.
Input Values
'N' = Dual Direction Mode disabled.
'Y' = Dual Direction Mode enabled.
Normal Command Sequence
“U”
[“Y”,“N”] Current Value
Host
[“Y”, “N”]
ZMOTION
Module
ACK
Read Single Direction Mode
Command
‘v’ (0x76)
Description
The 'v' command returns the current setting of the Single Direction Mode.
PS028408-0312
Serial Commands
ZMOTION Detection Module
Product Specification
44
Return Values
'A' = Single Direction Mode disabled.
'+' = Single direction mode set to detect motion only in the ‘+’ direction.
'-' = Single direction mode set to detect motion only in the ‘–’ direction.
Normal Command Sequence
“v”
Host
[“A”, “+”, “-“]
ZMOTION
Module
Write Single Direction Mode
Command
‘V’ (0x56)
Description
The 'V' command selects the direction of motion to be detected. When Single Direction
Mode is enabled, motion status is reported only when motion is detected in the direction
specified. For example, if the '+' direction is specified, then the 'a' command (Read Motion
Status) will return a 'Y' only when motion is detected in the '+' direction. If motion is
detected in the '–' direction, the 'a' command would return 'N'.
Input Values
'A' = Single Direction Mode disabled.
'+' = Detect motion only in the ‘+’ direction.
'-' = Detect motion only in the ‘–’ direction.
Normal Command Sequence
“V”
[“A”,“+”,”-“] Current Value
Host
[“A”, “+”, “-“]
ZMOTION
Module
ACK
PS028408-0312
Serial Commands
ZMOTION Detection Module
Product Specification
45
Module Reset
This command forces the ZMOTION Detection Module to perform a reset. All configuration and status are returned to default values; see Table 3 on page 14.
This is a special command that requires confirmation. After ‘X’ is received, the Module
sends an ACK and expects the 4-digit confirmation sequence (1, 2, 3, 4).
Once this sequence is received the device sends an 'ACK' and performs a reset. If the confirm sequence is incorrect or the inactivity time-out is exceeded, the device will send a
'NACK' and ignore the reset request.
Table 9 lists the pages in this section that describe their respective commands.
Table 9. Shortcuts to Module Reset Commands
Name
Command
Page
Module Reset
‘X’ (0x58)
45
Read Sleep Time
‘y’ (0x79)
46
Write Sleep Time
‘Y’ (0x79)
46
Module Reset
Command
‘X’ (0x58)
Description
Reset the ZMOTION Detection Module.
Return Values
ACK = Reset command accepted.
NACK = Reset command not accepted.
Normal Command Sequence
“X”
ACK
Host
“1”, “2”, “3”, “4”
ZMOTION
Module
ACK
PS028408-0312
Serial Commands
ZMOTION Detection Module
Product Specification
46
Read Sleep Time
Command
‘y’ (0x79)
Description
This command returns the current sleep time setting in seconds.
Return Values
0–255 (decimal)
Normal Command Sequence
“y”
Host
[0-255]
ZMOTION
Module
Write Sleep Time
Command
‘Y’ (0x79)
Description
This command sets the Sleep duration in seconds. A value of 0 disables the sleep timer,
and wake-up is initiated only by a transition on the SLP pin or when a character is received
over the serial interface (i.e., the character is received and processed).
Input Values
0–255 (decimal)
Normal Command Sequence
“Y”
[0–255] Current Value
Host
[0–255]
ZMOTION
Module
ACK
PS028408-0312
Serial Commands
ZMOTION Detection Module
Product Specification
47
Sleep Mode
This command places ZMOTION Detection Module into SLEEP Mode. SLEEP Mode
Enable is a special command that requires confirmation. After the ‘Z’ is received, the
Module sends an ACK and expects the 4-digit confirmation sequence (1, 2, 3, 4). After
this sequence is received, the device sends an ACK and enters low power SLEEP Mode
for the number of seconds set by the 'Y' (Write Sleep Time) command. If the confirm
sequence is incorrect or the inactivity time-out is exceeded, the device will send a NACK
and ignore the reset request.
Sleep Mode is exited automatically when the sleep time expires or by a transition on the
SLP pin or by sending a character over the serial interface–this character is ignored. A
value of 0 for sleep time disables the sleep timer.
Sleep Mode Enable
Command
‘Z’ (0x5A)
Description
The 'Z' command places the ZMOTION Detection Module into low-power Sleep Mode.
Return Values
ACK = Sleep command accepted.
NACK = Sleep command not accepted.
Normal Command Sequence
“Z”
ACK
Host
“1”, “2”, “3”, “4”
ZMOTION
Module
ACK
PS028408-0312
Serial Commands
ZMOTION Detection Module
Product Specification
48
Detection Pattern
The Fresnel lens directs the infrared energy from the target on to the pyroelectric sensor.
Figure 8 shows the coverage area provided by the ZMOTION Detection Module. It provides a 60-degree cone with 4 beams; the two inner beams provide greater range than the
two outer beams. The actual range is affected by ambient temperature and the settings provided to the Module; Sensitivity, Range, Hyper Sense and Frequency Response all contribute to the range performance.
Figure 8. Detection Pattern
PS028408-0312
Detection Pattern
ZMOTION Detection Module
Product Specification
49
Mechanical Information
5.35±0.2
6.10±0.2
1.60±0.2
10.55±0.2
16.80±0.3
9.00±0.2
8.00±0.2
7.0±0.2
5.3±0.2
3.55±0.1
25.40±0.5
3.95±0.2
21.73±0.2
Figure 9. Mechanical Drawing of the ZMOTION Detection Module (ZEPIR0AAS02MODG)
PS028408-0312
Mechanical Information
ZMOTION Detection Module
Product Specification
50
5.35±0.2
6.10±0.2
1.60±0.2
16.80±0.3
10.55±0.2
9.00±0.2
8.00±0.2
1
6.0
7.0±0.2
25.40±0.5
2.54
Note: All dimensions in
mm
3.55±0.1
1
3.95±0.2
21.73±0.2
Figure 10. Mechanical Drawing of the ZMOTION Detection Module (ZEPIR0ABS02MODG)
PS028408-0312
Mechanical Information
ZMOTION Detection Module
Product Specification
51
ZMOTION Detection Module Schematic
Figure 11 displays a schematic representation of the ZMOTION Detection Module.
Figure 11. Schematic of ZMOTION Detection Module
PS028408-0312
ZMOTION Detection Module Schematic
ZMOTION Detection Module
Product Specification
52
Related Documents
Additional information related to the ZMOTION Detection Module can be found in the
following documents.
•
•
•
•
•
•
•
Z8 Encore! XP® F082A Series Product Specification (PS0228)
•
ZMOTION Detection and Control Family Featuring PIR Technology Product Specification (PS0285)
ZMOTION Detection Module Product Brief (PB0223)
ZMOTION Detection Module Development Kit Quick Start Guide (QS0073)
ZMOTION Detection Module Development Kit User Manual (UM0223)
ZMOTION Detection Module Application Walkthrough (AN0307)
ZMOTION: A New PIR Motion Detection Architecture White Paper (WP0017)
Power Management and Customer Sensing with Zilog’s ZMOTION Detection Module
(AN0301)
Related Products
The table below lists the products related with ZMOTION Detection Module.
Product Number
Product Description
Z8FS040BSB20EG
ZMOTION MCU (8 pin SOIC)*
Z8FS040BHH20EG
ZMOTION MCU (20 pin SOIC)*
Z8FS040BHJ20EG
ZMOTION MCU (28 pin SOIC)*
ZEPIR000102ZCOG
ZMOTION Detection Module Development Kit
Note: *See Zilog’s ZMOTION Detection and Control Product Specification
(PS0285), available on Zilog.com.
PS028408-0312
Related Documents
ZMOTION Detection Module
Product Specification
54
Electrical Characteristics
The data in this chapter is prequalification and precharacterization and is subject to
change. For additional electrical characteristics, refer to the Z8 Encore! XP® F082A
Series Product Specification (PS0228).
Table 10. Electrical Characteristics
Symbol
Parameter
Min
Typ
Max
Units
Conditions
VPOR
Power-on Reset Voltage
Threshold
2.20
2.45
2.70
V
VDD = VPOR
VVBO
Voltage Brown-Out
Reset Voltage Threshold
2.15
2.40
2.65
V
VDD = VPOR
TRAMP
Time for VDD to
transition from VSS to
VPOR to ensure valid
Reset
0.10
—
100
ms
—
TPOR
Power-on Reset Digital
Delay
—
1.0
—
ms
—
VDD
Supply Voltage
2.7
—
3.6
V
—
VIL1
Low Level Input Voltage
–0.3
—
0.3 * VDD
V
RXD, /RST, SLP
VIH1
High Level Input Voltage 0.7 * VDD
—
5.5
V
RXD, /RST, SLP
VOL1
Low Level Output
Voltage
—
—
0.4
V
IOL = 2 mA; VDD = 3.0 V
TXD, MD
VOL2
Low Level Output
Voltage
—
—
0.6
V
IOL = 20 mA; VDD = 3.3 V
TXD, MD
VOH1
High Level Output
Voltage
2.4
—
—
V
IOH = –2 mA; VDD = 3.0 V
TXD, MD
VOH2
High Level Output
Voltage
2.4
—
—
V
IOH = –20 mA; VDD = 3.3 V
TXD, MD
IDD Active Supply Current in Active
Mode
—
8.9 mA
—
—
VDD = 3.3 V
IDD Sleep
Supply Current in Sleep
Mode
—
450 µA
(Typ)
—
—
VDD = 3.3 V
TPIR
PIR Stabilization Time
—
20
—
ZIN
Analog Pin Input
Impedance
—
550
—
Serial Interface Inactivity
Time-out
—
2.5
—
PS028408-0312
seconds —
KΩ
DLY, SNS, LG
seconds —
Electrical Characteristics
ZMOTION Detection Module
Product Specification
55
Absolute Maximum Ratings
Stresses greater than those listed in Table 11 can cause permanent damage to the device.
These ratings are stress ratings only. Operation of the device at any condition outside those
indicated in the operational sections of these specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Table 11. Absolute Maximum Ratings
Parameter
Min
Max
Units
0
70
°C
Storage Temperature
–65
+150
°C
Voltage on Any Pin with respect to VSS
–0.3
+5.5
V
Voltage on VDD Pin with respect to VSS
–0.3
+3.6
V
Maximum Output Current from Active Output Pin
–25
+25
mA
Ambient Temperature Under Bias
PS028408-0312
Electrical Characteristics
ZMOTION Detection Module
Product Specification
56
Ordering Information
You can order the ZMOTION Detection Module from Zilog® or any of our authorized distributors using the following part numbers. For more information on ordering, please consult your local Zilog sales office. The Zilog website (www.zilog.com) lists all regional
offices and provides additional information about the ZMOTION Detection Module product line.
Part Numbers
Table 12 lists the part numbers for ZMOTION Detection Module and a brief description of
each part.
Table 12. Part Numbers
Part Number
Description
ZEPIR0AAS02MODG
ZMOTION Detection Module (right-angle connector)
ZEPIR0ABS02MODG
ZMOTION Detection Module (straight connector)
ZEPIR000102ZCOG
ZMOTION Detection Module Development Kit
PS028408-0312
Ordering Information
ZMOTION Detection Module
Product Specification
57
Appendix A. Hardware Interface Mode
The schematic in Figure 11 shows a typical application example of how to use the Module
in Hardware Interface Mode.
Hardware Interface Mode is selected because the Sense pin is between 0 V and 1.8 V. In
this example, the DLY and SNS signals are connected to trim pots for control of the MD
output activation time and the Motion Detection sensitivity respectively. These connections can also be replaced with fixed resistor values in an application where adjustments
are not necessary. The Sleep feature is not being used so the SLP input is left unconnected
as there is an internal pull-up resistor to ensure this pin remains inactive. It is also acceptable to tie this pin to VDD. The MD signal directly drives a solid state relay and is active
low. The Light Gate (LG) signal is connected to a CDS photocell in a divider configuration with a potentiometer to adjust the light level. The signal is used by the Module to gate
the MD signal such that it does not activate in the presence of daytime ambient light.
When the voltage on this pin is lower than 1.0 V, the MD signal will not activate even
when motion is detected.
Figure 11. Application Example, Hardware Interface Mode
PS028408-0312
Appendix A. Hardware Interface Mode
ZMOTION Detection Module
Product Specification
58
Appendix B. Serial Interface Mode
The schematic in Figure 12 shows a typical application example of how to use the module
in Serial Interface Mode.
Serial Interface Mode is selected because the TXD pin is pulled High via the 10 KΩ resistor R1. This High state is only required to be guaranteed during power up. In this example,
the RXD and TXD signals are connected to the TXD and RXD signals (respectively) of
the Z8F1680. Since the MD and SLP signals are still active in the Serial Interface Mode,
they are also connected to the host MCU. If they were not connected to the MCU, MD
would typically drive the control circuitry similar the Hardware Interface Mode and SLP
either left unconnected or tied high. SLP has an internal pull-up to ensure proper operation. The Light Gate (LG) signal is connected to a CDS photocell in a divider configuration with a potentiometer to adjust the light level. The signal is used by the Module to gate
the MD signal such that it does not activate in the presence of daytime ambient light.
When the signal on this pin is lower than lower than the value programmed into the Light
Gate Threshold register, the MD signal will not activate even when motion is detected.
U1
+3.3V
+3.3V
+3.3V
C1
1uF
PB1/ANA1/AMPINN
PB2/ANA2/AMPINP
PB3/CLKIN/ANA3
VDD
PA0/T0IN/T0OUT/XIN
PA1/T0OUT/XOUT
VSS
PA2/DE0
PA3/CTS0
PA4/RXD0
PB0/ANA0/AMPOUT
PC3/COUT/LED
PC2/ANA6/LED
PC1/ANA5/CINN/LED
PC0/ANA4/CINP/LED
DBG
RESET/PD0
PA7/T1OUT
PA6/T1IN/T1OUT
PA5/TXD0
20
19
18
17
16
15
14
13
12
11
Z8F1680
RXD/DELAY
>>>SERIAL>>>
TXD/SENSE
(OPTIONAL)
/MD/RESET
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