WT11u
DATA SHEET
Monday, 12 December 2016
Version 0.9.6
VERSION HISTORY
Version
Comment
0.8
Initial versions
0.81
Ordering information updated
0.9
Reformatted tables, many WT11i->WT11u updates
0.9.1
Rest of tables reformatted
0.9.2
Updated dimension drawings
0.9.3
Certification information, RF parameters
0.9.4
Added sensitivity and current consumption measurements
0.9.5
Changed Transmit power variation over supply voltage range to 0.5 and
typical transmit power to 16.5dBm
0.9.6
Small edits to specifications
Silicon Laboratories Finland Oy
TABLE OF CONTENTS
1
Ordering Information......................................................................................................................................6
2
Pinout and Terminal Description ...................................................................................................................7
3
Electrical Characteristics ............................................................................................................................ 10
4
3.1
Absolute Maximum Ratings ................................................................................................................ 10
3.2
Recommended Operating Conditions ................................................................................................. 10
3.3
Input / Output Terminal Characteristics .............................................................................................. 11
3.3.1
Input/Output Terminal Characteristics (Digital) ............................................................................ 11
3.3.2
Input/Output Terminal Characteristics (USB) .............................................................................. 12
3.4
PIO Current Sink and Source Capability ............................................................................................. 13
3.5
Transmitter Performance For BDR ..................................................................................................... 13
3.6
Receiver Performance ........................................................................................................................ 14
3.7
Current Consumption .......................................................................................................................... 14
3.8
WT11u-A Antenna Specification ......................................................................................................... 15
Physical Dimensions .................................................................................................................................. 18
4.1
Package Drawings .............................................................................................................................. 20
5
Layout Guidelines ....................................................................................................................................... 22
6
UART Interface ........................................................................................................................................... 25
7
6.1
UART Bypass ...................................................................................................................................... 27
6.2
UART Configuration While Reset is Active ......................................................................................... 27
6.3
UART Bypass Mode ............................................................................................................................ 27
USB Interface ............................................................................................................................................. 28
7.1
USB Data Connections ....................................................................................................................... 28
7.2
USB Pull-Up resistor ........................................................................................................................... 28
7.3
USB Power Supply .............................................................................................................................. 28
7.4
Self-Powered Mode ............................................................................................................................. 28
7.5
Bus-Powered Mode ............................................................................................................................. 29
7.6
USB Suspend Current ......................................................................................................................... 30
7.7
USB Detach and Wake-Up Signaling.................................................................................................. 30
7.8
USB Driver .......................................................................................................................................... 31
7.9
USB v2.0 Compliance and Compatibility ............................................................................................ 31
8
Serial Peripheral Interface (SPI) ................................................................................................................. 32
9
PCM Codec Interface ................................................................................................................................. 33
9.1
PCM Interface Master/Slave ............................................................................................................... 33
9.2
Long Frame Sync ................................................................................................................................ 34
9.3
Short Frame Sync ............................................................................................................................... 34
9.4
Multi-slot Operation ............................................................................................................................. 35
9.5
GCI Interface ....................................................................................................................................... 35
Silicon Laboratories Finland Oy
9.6
Slots and Sample Formats .................................................................................................................. 36
9.7
Additional Features ............................................................................................................................. 37
9.8
PCM_CLK and PCM_SYNC Generation ............................................................................................ 37
9.9
PCM Configuration .............................................................................................................................. 38
10
I/O Parallel Ports ..................................................................................................................................... 41
10.1
11
PIO Defaults ................................................................................................................................. 41
Reset ....................................................................................................................................................... 42
11.1
12
Pin States on Reset ..................................................................................................................... 43
Certifications ........................................................................................................................................... 44
12.1
Bluetooth ...................................................................................................................................... 44
12.2
FCC .............................................................................................................................................. 44
12.3
ISEDC .......................................................................................................................................... 45
12.3.1
ISEDC (Français) ......................................................................................................................... 45
12.4
CE ................................................................................................................................................ 47
12.5
MIC Japan .................................................................................................................................... 47
12.6
Qualified Antenna Types for WT11u-E ........................................................................................ 48
12.7
Moisture Sensitivity Level (MSL).................................................................................................. 48
Silicon Laboratories Finland Oy
WT11u Bluetooth® Module
DESCRIPTION
WT11u is a fully integrated Bluetooth 2.1 +
EDR,
class
1
module
combining
antenna, Bluetooth radio and an on-board
iWRAP Bluetooth stack. Silicon Labs WT11u
provides an ideal solution for developers that
want to quickly integrate long range and
high performance Bluetooth wireless
technology
to
their
design
without
investing several months into Bluetooth radio
and stack development. WT11u provides a
100dB link budget ensuring long rage and
robust Bluetooth connectivity. WT11u uses
Silicon Labs’ iWRAP Bluetooth stack, which is
an embedded Bluetooth stack implementing
13 different Bluetooth profiles and Apple iAP
connectivity. By using WT11u combined with
iWRAP Bluetooth stack and Silicon Labs’
excellent technical support designers ensure
quick time to market, low development costs
and risk.
APPLICATIONS:
Industrial and M2M
Point-of-Sale devices
Computer Accessories
KEY FEATURES:
Radio features:
Bluetooth v.2.1 + EDR
Bluetooth class 1 radio
Transmit power: +17 dBm
Receiver sensitivity: -84 dBm (DH5)
Range: 350 meters line-of-sight
Integrated
connector
chip
antenna
or
U.FL
Hardware features:
UART and USB host interfaces
802.11 co-existence interface
6 software programmable IO pins
Operating voltage: 2.7V to 3.6V
Temperature range: -40C to +85C
Dimensions: 35.75 x 14.50 x 2.6 mm
Qualifications:
Bluetooth
CE
FCC
IC
Japan
PHYSICAL OUTLOOK
Silicon Laboratories Finland Oy
1 Ordering Information
Firmware
U.FL Connector
Internal chip antenna
iWRAP 5.6 firmware
WT11u-E-AI56
WT11u-A-AI56
iWRAP 5.5 firmware
WT11u-E-AI55
WT11u-A-AI55
iWRAP 5.0.1 firmware
WT11u-E-AI5
WT11u-A-AI5
HCI firmware, BT2.1 + EDR
WT11u-E-HCI21
WT11u-A-HCI21
Table 1: Ordering information
Silicon Laboratories Finland Oy
Page 6 of 49
Pinout and Terminal Description
2
WT11i
1
GND
2
VDD_PA
GND
28
AIO
3
27
PIO2
UART_TX
26
4
PIO3
PIO5
25
5
UART_RTS#
SPI_MOSI
24
6
UART_RX
SPI_MISO
23
7
PCM_OUT
SPI_CLK
22
8
USB+
SPI_CS#
21
9
USB-
PIO4
20
10
UART_CTS#
PIO7
19
11
PCM_IN
PIO6
18
12
PCM_CLK
RESET
17
13
PCM_SYNC
VDD
16
14
GND
GND
15
Figure 1: WT11u connection diagram
Pad name
Pad
number
Pad type
Description
RESET
17
Input
Reset input, active high, internal 220kohm pull-down. Keep
high for >5ms for reset
GND
1, 14, 15, 28
GND
Ground connection, connect all to a ground plane with
minimal trace lengths
VDD_PA
2
Supply voltage
Supply voltage for RF power amplifier
VDD
16
Supply voltage
Chipset supply voltage
Table 2: Supply and RF Terminal Descriptions
Silicon Laboratories Finland Oy
Page 7 of 49
PIO signal
Pad number
Description
PIO[2]
3
Bi-directional digital in/out with programmable strength and pull-up/pulldown
PIO[3]
4
Bi-directional digital in/out with programmable strength and pull-up/pulldown
PIO[4]
20
Bi-directional digital in/out with programmable strength and pull-up/pulldown
PIO[5]
25
Bi-directional digital in/out with programmable strength and pull-up/pulldown
PIO[6]
18
Bi-directional digital in/out with programmable strength and pull-up/pulldown
PIO[7]
19
Bi-directional digital in/out with programmable strength and pull-up/pulldown
AIO[1]
27
Bi-directional analog in/out
Table 3: GPIO Terminal Descriptions
PCM signal
Pad number
Pad type
Description
PCM_OUT
7
Output, weak internal pull-down
PCM_IN
11
Input, weak internal pull-down
Synchronous data input
PCM_SYNC
13
Bi-directional, weak internal pull-down
Synchronous data sync
PCM_CLK
12
Bi-directional, weak internal pull-down
Synchronous data clock
Synchronous data output
Table 4: PCM Terminal Descriptions
Silicon Laboratories Finland Oy
Page 8 of 49
UART signal
Pad number
Pad type
Description
UART_TX
26
Output,
pull-up
weak
internal
UART data output, active
high
UART_RTS#
5
Output,
pull-up
weak
internal
UART request to send,
active low
UART_RX
6
Input, weak internal pulldown
UART data input, active
high
UART_CTS#
10
Input, weak internal pulldown
UART clear to send,
active low
Table 5: UART Terminal Descriptions
USB signal
Pad number
Pad type
Description
USB+
8
Bidirectional
USB data line with internal 1.5kohm pull-up
USB-
9
Bidirectional
USB data line
Table 6: USB Terminal Descriptions
SPI signal
Pad
number
Pad type
SPI_MOSI
24
Input, weak internal pull-down
SPI_CS#
21
Input, weak internal pull-up
SPI_CLK
22
Input, weak internal pull-down
SPI_MISO
23
Output, weak internal pull-down
Description
SPI data input
Chip select, active low
SPI clock
SPI data output
Table 7: Terminal Descriptions
Silicon Laboratories Finland Oy
Page 9 of 49
3
Electrical Characteristics
3.1 Absolute Maximum Ratings
Specification
Min
Max
Unit
Storage temperature
-40
85
°C
VDD_PA, VDD
-0.4
3.6
V
VSS-0.4
VDD+0.4
V
Specification
Min
Max
Unit
Operating temperature
-40
85
°C
VDD_PA*, VDD
3.0
3.6
V
Other terminal voltages
Table 8: Absolute Maximum Ratings
3.2 Recommended Operating Conditions
*) VDD_PA has an effect on the RF output power.
Table 9: Recommended Operating Conditions
Silicon Laboratories Finland Oy
Page 10 of 49
3.3 Input / Output Terminal Characteristics
3.3.1 Input/Output Terminal Characteristics (Digital)
Digital Terminals
Min
Typ
Max
Unit
2.7 V ≤ VDD ≤ 3.0 V
-0.4
-
0.8
V
1.7 V ≤ VDD ≤ 1.9 V
-0.4
-
0.4
V
0.7 VDD
-
VDD + 0.4
V
-
-
0.2
V
-
-
0.4
V
VOL output logic level high
(IO = 4.0 mA) 2.7V ≤ VDD ≤ 3.0
VDD - 0.2
-
V
VOL output logic level high
(IO = 4.0 mA) 1.7V ≤ VDD ≤ 1.9
VDD - 0.4
-
V
-100
-40
-10
µA
10
40
100
µA
Weak pull-up
-5.0
-1.0
-0.2
µA
Weak pull-down
0.2
1.0
5.0
µA
I/O pad leakage current
-1
0
1
µA
CI input capacitance
1.0
-
5.0
pF
Input Voltage Levels
VIL input logic level low
VIH input logic level high
Output Voltage Levels
VOL output logic level low
(IO = 4.0 mA) 2.7V ≤ VDD ≤ 3.0 V
VOL output logic level low
(IO = 4.0 mA) 1.7V ≤ VDD ≤ 1.9
Input and Tristate Current with
Strong pull-up
Strong pull-down
Silicon Laboratories Finland Oy
Page 11 of 49
3.3.2 Input/Output Terminal Characteristics (USB)
USB Terminals
Min
VDD_USB for correct USB operation
3.1
Typ
Max
Unit
3.6
V
Input Threshold
VIL input logic level log
VIH input logic level high
-
-
0.3VDD_USB
V
0.7VDD_USB
-
-
V
Silicon Laboratories Finland Oy
Page 12 of 49
3.4 PIO Current Sink and Source Capability
Figure 2: WT11u PIO Current Drive Capability
3.5 Transmitter Performance For BDR
RF characteristic
Min
Max transmit power
Typ
Max
16.5
Bluetooth specification
Unit
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