ISOFACE™
ISO1I813T
Isolated 8 Channel Digital Input with IEC61131-2 Type 1/2/3 Characteristics
Data Sheet
V 2.2, 2017-01-03
Power Management & Multimarket
Edition 2017-01-03
Published by
Infineon Technologies AG
81726 Munich, Germany
© 2017 Infineon Technologies AG
All Rights Reserved.
Legal Disclaimer
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characteristics. With respect to any examples or hints given herein, any typical values stated herein and/or any
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of any third party.
Information
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ISO1I813T
Revision History: 2017-01-03, V 2.2
Previous Version: Data Sheet V2.1
Page
Subjects (major changes since last revision)
V 2.2
Data Sheet
15
Typo : .. pin ERR to logic high.
V 2.1
Data Sheet
49,56
Typo inside register adress for GLCFG corrected
V 2.0
Data Sheet
7, 10, 12
Description of SEL pin corrected
25
Chapter 3.6 Programmable Digital Input Filter updated and information about filter times added
27
Chapter 3.7 Parallel Interface Mode updated
30
Chapter 3.8.1 SPI Modes write access decription updated
35
Chapter 3.9 SYNC Operation updated
36
Chapter 3.10 Write-Read- Access and Read-Read-Access for Different Applications added
38
Table 3 System Insulation Characteristics Condition for Production test added
46
Table 15 Parallel Interface timing updated
47
Table 16 Serial Interface timing updated
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of X/Open Company Limited. VERILOG™, PALLADIUM™ of Cadence Design Systems, Inc. VLYNQ™ of Texas
Instruments Incorporated. VXWORKS™, WIND RIVER™ of WIND RIVER SYSTEMS, INC. ZETEX™ of Diodes
Zetex Limited.
Data Sheet
3
V 2.2, 2017-01-03
ISO1I813T
Last Trademarks Update 2011-11-11
Data Sheet
4
V 2.2, 2017-01-03
ISO1I813T
1
1.1
1.2
1.2.1
1.2.2
Pin Configuration and Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Pin Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Pins of Sensor Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Pins of Serial and Parallel logic Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2
Blockdiagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3
3.1
3.2
3.2.1
3.2.2
3.2.3
3.3
3.4
3.4.1
3.4.2
3.5
3.6
3.7
3.8
3.8.1
3.8.2
3.9
3.10
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage Limits on VBB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
External Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DC/DC Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Internal Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sensor Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input Type Select . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wire Break Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Common Error Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Programmable Digital Input Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parallel Interface Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Serial Interface Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SPI Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Architecture of CRC-Engines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SYNC Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Write-Read- Access and Read-Read-Access for Different Applications . . . . . . . . . . . . . . . . . . . . . .
4
Standard Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
5
5.1
5.2
5.3
5.4
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Conditions and Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Characteristics Input Side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Characteristics Microcontroller Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
39
39
40
42
44
6
6.1
6.2
6.2.1
6.2.2
6.2.3
6.3
6.3.1
6.3.2
6.3.3
6.3.4
6.3.5
6.3.6
Registers of Microcontroller-Interface-Chip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
µController Chip Registers Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Presentation of the Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sensor Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Status Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Configuration Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
µController Registers Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Collective Diagnostics Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input Channel Data Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Global Error Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Filter Time of Channel 0-7 Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Internal Error Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Global Configuration Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
49
49
50
50
50
51
52
52
52
53
54
55
56
7
Package Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Data Sheet
5
13
13
13
14
15
16
19
20
20
22
23
25
27
29
30
34
35
36
V 2.2, 2017-01-03
ISO1I813T
Isolated 8 Channel Digital Input with
IEC61131-2 Type 1/2/3 Characteristics
Product Highlights
•
•
•
•
Minimization of power dissipation due to constant current
characteristic
Status LED output for each input
Digital averaging of the input signals to suppress interference
pulses
Isolation between Input and Output using Coreless
Transformer Technology
Features
Description
•
The ISO1I813T is an electrically isolated 8 bit data
input interface in TSSOP-48 package.
•
•
•
•
•
•
•
•
Complete system integration (digital sensor or
switch input, galvanic isolation and intelligent
micro-controller or bus-ASIC interface)
8-channel input according to IEC61131-2
(Type 1/2/3)
Integrated galvanic isolation 500VAC
(EN60664-1, UL1577)
3.3V/5V SPI and parallel micro-controller interface
Adjustable deglitching filters
Up to 500 kHz sampling frequency
Wire-break detection
VBB under-voltage detection
Package: TSSOP-48, 8 mm x 12.5 mm
This part is used to detect the signal states of eight
independent input lines according to IEC61131-2 Type
1/2/3 (e.g. two-wire proximity switches) with a common
ground (GNDFI).
For operating sensors of type 1/2/3 in accordance with
IEC61131-2, it is necessary for the device to be wired
with resistors RV and REXT (it is recommended to use
resistors with an accuracy of 2%, in any case < 5% - is
mandatory, temperature-coefficients < 200ppm are
allowed).
An 8 bit parallel µC compatible interface allows to
connect the IC directly to a µC system. The input
interface is designed to operate with 3.3/5V CMOS
compatible levels.
Typical Application
Programmable Logic Controllers(PLC)
Industrial PC
The data transfer from input to output side is realized by
the integrated Coreless Transformer Technology.
General Control Equipment
VBB
VFI
VCC
TS
330n
DC
ENA
SW1
8 sensors
WB
IN0
12k
I0H
2k
I0L
I7H
IN7
12k
2k
I7L
D
E
S
E
R
I
A
L
I
Z
E
S
E
R
I
A
L
I
Z
E
SW2
digital
filter
/ERR
L
O
G
I
C
SYNC
µC
/CS
parallel
or serial
interface
digital
filter
e.g.
XE166
Rosc
GNDFI
GND
GNDBB
ISO1I813T
Typical Application for Sensor of Type 1/3
Data Sheet
6
V 2.2, 2017-01-03
ISO1I813T
Pin Configuration and Functionality
1
Pin Configuration and Functionality
The pin configuration slightly differs for the parallel or the serial interface.
1.1
Pin Configuration
The ordering, type and functions of the IC pins are listed in the Table 1.
Table 1
Pin
Pin Configuration
Parallel Interface Mode
Symbol
Ctrl Type Function
1)
1
GND
2
SEL
3
SYNC
4
Serial Interface Mode
Symbol
2)
A
Logic Ground
GND
I
PU
Serial Parallel Mode Select
SEL
I
PU
Freeze Data & Diagnostics
SYNC
Rosc
A
Clock Frequency Adjustment Rosc
5
VCC
A
Positive 5/3.3V logic supply
VCC
6
ERR
OD,
PU
Fault Indication output
ERR
7
GND
A
Logic Ground
GND
O
Ctrl. Type Function
1)
2)
8
AD0
IO
PPZ
Data output bit0
SDI
I
PD
SPI Data input
9
AD1
IO
PPZ
Data output bit1
SSO
O
PPZ
SPI Status output
10
AD2
IO
PPZ
Data output bit2
GND
11
AD3
IO
PPZ
Data output bit3
GND
12
AD4
IO
PPZ
Data output bit4
CRCERR
O
OD,
PU
CRC Error output
13
AD5
IO
PPZ
Data output bit5
SCLK
I
PD
SPI Shift Clock input
14
AD6
IO
PPZ
Data output bit6
SSI
I
PD
SPI Status input
15
AD7
IO
PPZ
Data output bit7
SDO
O
PPZ
SPI Data output
16
CS
I
PU
Chip Select
CS
17
RD
I
PU
Data Read
n.c.
18
GND
A
Logic Ground
GND
19
WR
I
PU
Data Write
MS0
I
PD
SPI Mode Select bit 0
20
ALE
I
PD
Address Latch Enable
MS1
I
PD
SPI Mode Select bit 1
21
DC_ENA I
PD
DC-DC Supply Enable
DC_ENA
22
SW1
A
DC-DC Switch Output 1
SW1
23
SW2
A
DC-DC Switch Output 2
SW2
24
GND
A
Logic Ground
GND
GNDBB
Sensor Side Pins
25
GNDBB
A
Input Ground
26
VBB
A
Positive input supply voltage VBB
27
I0L
A
Input 0 Low, LED Out
I0L
28
I0H
A
Input 0 High
I0H
29
I1L
A
Input 1 Low, LED Out
I1L
30
I1H
A
Input 1 High
I1H
Data Sheet
7
V 2.2, 2017-01-03
ISO1I813T
Pin Configuration and Functionality
Table 1
Pin
Pin Configuration
Parallel Interface Mode
Symbol
Serial Interface Mode
Ctrl Type Function
1)
Symbol
2)
Ctrl. Type Function
1)
31
GNDBB
A
Input Ground
GNDBB
32
I2L
A
Input 2 Low, LED Out
I2L
33
I2H
A
Input 2 High
I2H
34
I3L
A
Input 3 Low, LED Out
I3L
35
I3H
A
Input 3 High
I3H
36
TS
A
Sensor Type 1/2/3 Select
TS
37
GNDBB
A
Input Ground
GNDBB
38
WB
A
Wire Break Select
WB
39
I4L
A
Input 4 Low, LED Out
I4L
40
I4H
A
Input 4 High
I4H
41
I5L
A
Input 5 Low, LED Out
I5L
42
I5H
A
Input 5 High
I5H
43
GNDBB
A
Input Ground
GNDBB
44
I6L
A
Input 6 Low, LED Out
I6L
45
I6H
A
Input 6 High
I6H
46
I7L
A
Input 7 Low, LED Out
I7L
47
I7H
A
Input 7 High
I7H
48
GNDBB
A
Input Ground
GNDBB
2)
1) Direction of the pin: I = input, O = output, IO = Input/Output
2) Type of the pin: A = analog, OD = Open-Drain, PU = internal Pull-Up resistor, PD = internal Pull-Down resistor,
PPZ = Push-Pull pin with High-Impedance functionality
Data Sheet
8
V 2.2, 2017-01-03
ISO1I813T
Pin Configuration and Functionality
GND
1
48
GNDBB
GND
1
48
GNDBB
SEL
2
47
I7H
SEL
2
47
I 7H
SYNC
3
46
I7L
SYNC
3
46
I7L
Rosc
4
45
I6H
Rosc
4
45
I 6H
VCC
5
44
I6L
VCC
5
44
I6L
/ ERR
6
43
GNDBB
/ERR
6
43
GNDBB
GND
7
42
I5H
GND
7
42
I 5H
AD0
8
41
I5L
SDI
8
41
I5L
AD1
9
40
I4H
SSO
9
40
I 4H
AD2
10
39
I4L
GND
10
39
I4L
AD3
11
38
WB
GND
11
38
WB
AD4
12
37
GNDBB
37
GNDBB
AD5
13
36
TS
SCLK
13
AD6
14
35
I3H
SSI
AD7
15
34
I3L
/CS
16
33
I2H
Pinout for parallel
Interface
CRCERR 12
Pinout for serial
Interface
36
TS
14
35
I 3H
SDO
15
34
I3L
/CS
16
33
I 2H
/RD
17
32
I2L
nc
17
32
I2L
GND
18
31
GNDBB
GND
18
31
GNDBB
/WR
19
30
I1H
MS0
19
30
I 1H
ALE
20
29
I1L
MS1
20
29
I1L
DC_ENA
21
28
I0H
DC_ENA
21
28
I 0H
SW1
22
27
I0L
SW1
22
27
I0L
SW2
23
26
VBB
SW2
23
26
VBB
GND
24
25
GNDBB
GND
24
25
GNDBB
n.c. = Not Connected
Figure 1
TSSOP-48 Pinout for Parallel and Serial Interface Modes
1.2
Pin Functionality
1.2.1
Pins of Sensor Interface
VBB (Positive supply 9.6-35V sensor supply)
VBB supplies the sensor input stage.
GNDBB (Ground for VBB domain)
This pin acts as the ground reference for the sensor input stage that is supplied by VBB.
I0H... I7H (Input channel 0 ... 7)
Sensor inputs with current sink characteristic according IEC61131-2 Type 1/2/3 which has been selected by pin TS
I0L... I7L (LED output channel 0 ... 7)
This pin provides the output signal to switch on the LED if the input voltage and current has been detected as
“High” according to the selected type.
WB (Wire-Break Select)
By connecting a resistor between pin WB and pin GNDBB, the level for the Wire-Break detection can be adjusted
(refer to Table 10 for corresponding resistor value). This pin is for static configuration (pin-strapping). The input
voltage at pin WB is not allowed to be changed during operation.
TS (Type Select)
By connecting a resistor between TS and GNDBB the sensor type (Type 1/2/3) can be selected (refer to Table 10
for corresponding resistor value). This pin is for static configuration (pin-strapping). The input voltage at pin TS is
not allowed to be changed during operation.
Data Sheet
9
V 2.2, 2017-01-03
ISO1I813T
Pin Configuration and Functionality
1.2.2
Pins of Serial and Parallel logic Interface
Some pins are common for both interface types, some others are specific for the parallel or serial access.
VCC (Positive 3.3/5V logic supply)
VCC supplies the output interface that is electrically isolated from the sensor input stage. The interface can be
supplied with 3.3/5V.
GND (Ground for VCC domain)
This pin acts as the ground reference for the uC-interface that is supplied by pin VCC.
Rosc (Clock Adjustment)
A high precision resistor has to be connected between pin Rosc and pin GND to set the frequency of the sampling
clock.
DC_ENA (DC-DC Converter Enable)
When the DC_ENA pin is connected to VCC, the internal DC-DC driver is activated. When DC_ENA is in the state
Low, the switches are not driven. The input voltage must not change during operation. This pin has an internal
Pull-Down resistor.
SW1, SW2 (DC-DC switch outputs 1/2)
When the pin DC_ENA is connected to VCC, the outputs SW1 and SW2 switch at the clock-frequency determined
by the resistor at pin Rosc to supply the external push-pull converter. The switching frequency can be divided by
two by setting the responsible bit in the GLCFG register (see also Chapter 6). Both outputs provide an open drain
functionality.
ERR (Error)
The active Low ERR signal contains the OR-wired information of the sensor input undervoltage and missing
voltage detection, the internal data transmission failure detection unit and the overcurrent fault of the DC-DCconverter. The output pin ERR provides an open drain functionality. During Start Up this pin ERR is pulled to High.
This pin ERR has an internal Pull-Up resistor. In normal operation the signal ERR is High. See Chapter 3.5 for
more details.
SEL (Serial or Parallel Mode Select)
When this pin is in a logic Low state, the IC operates in Parallel Mode. For Serial Mode operation the pin has to
be pulled into logic High state. During Start Up the IC is operating in Serial Mode. This pin has an internal Pull-Up
resistor. This pin must not change during operation.
SYNC
When this pin is in a logic High state, the IC operates in continuous mode with the internal sampling clock. In
isochronous mode, the internal data and diagnostics registers are synchronized on each falling edge detected at
SYNC. The internal data and diagnostics registers are frozen with the falling edge of SYNC. In logic Low state the
internal data and diagnostic registers are not updated. During Start-Up this pin is pulled to High state. This pin has
an internal Pull-Up resistor. (see also Chapter 3.9)
CS (Chip Select)
When the pin CS pin is logic Low, the IC interface is enabled and data can be transferred. This pin CS has an
internal Pull-Up resistor.
Data Sheet
10
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ISO1I813T
Pin Configuration and Functionality
The following pins are provided in the parallel interface mode
AD7:AD0 (AddressData input / output bit7 ... bit0)
The pins AD0 .. AD7 are the bidirectional input / outputs for data write and read. Depending on the state of the
pins ALE, RD, WR and the AD7 bit register addresses or data can be transferred between the internal registers
and the parallel interface of a e.g. micro-controller .
RD, WR (Read / Write)
By pulling one of these pins down, a read or write transaction is initiated on the AddressData bus and the data
becomes valid. These pins have internal Pull-Up resistors.
ALE (Address Latch Enable)
The pin ALE is used to select between address (ALE is in a logic High state) or data (ALE is in a logic Low state).
Furthermore, a read or write transaction can be selected in conjunction with the AD7 bit. When ALE is pulled high,
addresses are transferred and latched over the bit AD0 to AD6. The AD7 bit serves for a read access (AD7 is Low)
or a write access (AD7 is High) at this address. During the Low State of ALE all transactions hit the same adress.
This pin has an internal Pull-Down resistor.
The following pins are provided in the serial interface mode
MS0, MS1 (Serial Mode Select)
By driving the pins MS, MS1 to Logic High or Logic Low the Serial Interface Mode can be selected. These pins
have internal Pull-Down resistors. The mode of the Serial Interface can be changed by the user during operation.
SCLK (Serial interface shift clock)
Input data are sampled with the rising edge and output data are updated with the falling edge of this input clock
signal. This pin SCLK has an internal Pull-Down resistor.
SDI, SSI (Serial interface data/status input )
SDI/SSI data is put into a dedicated FIFO to program the filtering time and mask the Wire-Break diagnostic bits of
each channel (SPI Mode 2 and 3). It is also used to set the address of the register, which is intended to be
accessed. This pin has an internal Pull-Down resistor.
SDO, SSO (Serial interface data/status outputs)
SDO provides the sensor data bits and or the register content, SSO provides the sensor diagnostics bits.
CRCERR (CRC Error output)
This pin CRCERR is in a logic Low state when CRC errors or Shift-Clock errors are detected internally. This pin
CRCERR provides an open drain functionality. This pin has an internal Pull-Up resistor.
Data Sheet
11
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ISO1I813T
Blockdiagram
2
Blockdiagram
VBB
Rosc
UVLO
MV
WB
TS
VCC
OSC
UV
SW1
UVLO
DC/DC
SW2
CLK
DC_ENA
WireBreak
Selector
Startup
/ERR
TX/RX
Control
Type
Selector
TX/RX
Common
Control
Error
SYNC
Validation
/ CS
/WR
I0H
I0L
Sensor
Circuit 0
I1H
I1L
Sensor
Circuit 2
Sensor
Circuit 3
Sensor
Circuit 4
S
E
R
DIAG
S
DATA
E
DIAG
DIAG
DIAG
I
R
A
I
DATA
L
A
DIAG
I
L
Z
I
E
Z
DIAG
E
DATA
DIAG
DATA
DIAG
DATA
Sensor
Circuit 7
DIAG
DATA
DIAG
DIAG
Filter 0
DATA
/RD
ALE
DATA
E
DATA
Sensor
Circuit 6
I7H
I7L
D
DIAG
DATA
Sensor
Circuit 5
I6H
I6L
DIAG
DATA
I5H
I5L
DIAG
DATA
I4H
I4L
DIAG
DATA
I3H
I3L
DATA
DATA
Sensor
Circuit 1
I2H
I2L
DATA
Filter 1
AD7
U
P
D
A
T
E
G
A
T
E
AD6
Filter 2
AD5
AD4
Filter 3
parallel
interface
AD3
AD2
Filter 4
Interface
AD1
AD0
Handler
SCLK
Filter 5
SDO
SDI
Filter 6
SSO
SSI
Filter 7
DIAG
serial
interface
MS0
MS1
Control
Registers
CRC
GNDBB
GND
/CRCERR
SEL
813 T - Blockdiagram
Figure 2
Data Sheet
Block Diagram ISO1I813T
12
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ISO1I813T
Functional Description
3
Functional Description
The ISO1I813T is an electrically isolated 8 bit data input interface. This part is used to detect the signal states of
eight independent input lines according to IEC61131-2 Type 1/2/3 (e.g. two-wire proximity switches) with a
common ground (GNDBB).
3.1
Introduction
The current in the input circuit is determined by the switching element in state “0” and by the characteristics of the
input stage in state “1”.
The octal input device is intended for a configuration comprising two specified external resistors per channel, as
shown in Figure 10 “Typical Application for Sensor Input Type 1, 2 and 3” on Page 20. As a result the power
dissipation within the package is at a minimum.
The voltage dependent current through the external resistor REXT is compensated by a negative differential
resistance of the current sink across pins IxH and IxL, therefore input INx behaves like a constant current sink.
The comparator assigns level 1 or 0 to the voltage present at input IxH. To improve interference protection, the
comparator is provided with hysteresis. A status LED is connected in series with the input circuit (REXT and current
sink).
If no LED is used an external resistor of 2 k (type 1 and 3) has to be connected between IxL and GNDBB. The
specified switching thresholds may change if the LED is replaced by a resistor.
The internal LED drive short-circuits the status LED if the comparator detects “0”. A constant current sink in parallel
with the LED reduces the operating current of the LED, and a voltage limiter ensures that the input circuit remains
operational if the LED opens, but the switching thresholds may change.
For each channel an adjustable digital filter is provided which samples the comparator signal at a rate configured
by programming internal registers. The digital filter is designed to provide averaging characteristics. If the input
value remains the same for the selected number of sampling values, then the output changes to the corresponding
state.
The µC compatible interfaces allow a direct connection to the ports of a microcontroller without the need for other
components. The diagnostic logic on the chip monitors the internal data transfer as well as the sensor input supply.
The information is sent via the internal coreless transformer to the pin ERR at the input interface
3.2
Power Supply
The IC contains two electrically isolated voltage domains that are independent from each other. The
microcontroller interface is supplied via pin VCC, GND and the input stage is supplied via pin VBB, GNDBB. The
different voltage domains can be switched on at different times. Figure 4 shows the Start Up behaviour if both
voltage domains are powered by an external power supply. If the VCC and VBB voltage have reached their
operating range and the internal data transmission has been started successfully, the IC indicates the end of the
Start Up procedure by setting the pin ERR to logic low. In the situation of a supply voltage drop at VBB on the
Sense Side - even short - the Sense Chip requires a proper restart and therefore the µController Side control unit
needs to react accordingly, especially to guarantee the integrity of the sensor data provided to the filter stage.
Data Sheet
13
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ISO1I813T
Functional Description
3.2.1
Voltage Limits on VBB
VVBB
Voltage
VUV
VVBBhys
VMV
VVBBhys
VRESET
VVBBhys
VVBBuvoff
VVBBuvon
VVBBmvoff
VVBBmvon
VVBBoff
VVBBon
Time
RST
MV
UV
por_uv_mv_events .vsd
Figure 3
Start Up Procedure with external Power Supply
During UVLO, all registers are reset to their reset values as specified in the Chapter 6.2. As a result, the flags TE,
UV as well as MV are High and the ERR pin is Low (error condition). Immediately after the reset is released, the
IC is first configured by “reading“ the logic level of the SEL, MS1, MS0 (when available). The IC powers up as a
serial device (SEL has a pull-up resistor).
The supply voltage VBB is monitored during operation by two internal comparators (with typ. 8 µs blanking time
@ 500kHz fscantyp) detecting:
•
•
VBB Undervoltage: If the voltage drops below the UV threshold (see Table 7), the UV-bit in the GLERR
register is set High. The IC remains in normal operation.
VBB Missing Voltage: If the voltage further drops below the MV threshold, lower than the previous threshold,
the MV-bit in the GLERR register is set, the Sense Side of the IC is turned off when reaching the VRESET
threshold whereas the Micro-Controller Side remains active.
These 2 thresholds are inactive when the IC operates in Self Power Mode i.e. when the DC_ENA pin is High.
Note: In case DC_ENA is High the integrated DC/DC driver is active. The driver stage is self-protected in overload
condition: the internal switches will be turned off as long as the overcurrent condition is detected and the IC
will automatically restart once the overload condition disappears.
Important: Since the UV and MV (as well as the TE and W4S) bits used for generating the ERR signal are preset
to High during UVLO, the ERR pin is Low after power up. Therefore the ERR signal requires to be explicitly cleared
after power up. At least one read access to the GLERR and INTERR registers is needed to update those status
bits and thus release the ERR pin.
Data Sheet
14
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ISO1I813T
Functional Description
3.2.2
External Supply
Figure 4 shows the Start Up behaviour if both voltage domains are powered by an external power supply. If the
VCC and VBB voltage have reached their operating range and the internal data transmission has been started
successfully, the IC indicates the end of the Start Up procedure by setting the pin ERR to logic high.
16 V
13 V
9.3 V
2.85 V
VB
B
IC
pins
VCC
1
DC_ENA
0
1
/ERR
0
1
UV
0
MV
GL
ERR
register
1
0
1
CF
0
1
Read Access
to Adr. 04H
0
1
DC_ERR
0
1
W4S
INT
ERR
register
0
1
TE
0
1
Read Access
to Adr. 16H
0
tds_startup_timing_813 .vsd
Figure 4
Data Sheet
Start Up procedure with external power supply
15
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ISO1I813T
Functional Description
3.2.3
DC/DC Supply
µC Supply (5V / 3.3V)
VCC
PP Output driver
VBB
SW1
Clk
Temp.
Sense
:2
GLCFG:DCK
SW2
N1
GND
N2
Tr
GNDBB
VCC
µC Supply (GND)
DC_ENA
µC-Domain
Figure 5
dcdc _typapp .VSD
Sense-Domain
Typical Circuitry for Self Powered Mode with Push-Pull Converter
The IC can as well operate in self powered mode. In this case, the Process Side (Sense-Domain) can be supplied
at VBB with an isolated push-pull converter connected to the Micro-controller Side and driven by the pins SW1
and SW2 . The internal driver stage at SW1 and SW2 is designed to power up two ISO1I813T (refer to Table 8).
The DC/DC-Converter is driven by the internal clock. Parameters are calculated with the internal clock of 500 kHz.
By setting the DCK Bit in the GLCFG register a prescaler by 2 can be activated. Should the user adjust the internal
clock to a different frequency the transformer has to be adjusted accordingly.
The short-circuit protection uses a temperature sensor located close to the drivers and disables the driver stages
when a predefined temperature is reached (Figure 7, Figure 5). The target value for the switch-off-temperature
is 160°C with a hysteresis of < 10°C. That means that the drivers are switched off at a junction temperature of 160
°C and switched on at a junction temperature of 0;m--)
crc_reg[m] = crc_reg[m-1] ^(crc_pol[5-m] && tmp)
Data-Stream
CRC-Stream
ds[18]
SDO
ds[0]
crc_reg[4:0]
Transmitting Sequence
start-value : crc_reg[4:0] = 11111
Figure 28
Data Sheet
CRC-Calculation
34
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ISO1I813T
Functional Description
3.9
SYNC Operation
In automation systems there is sometimes the need to actualize the input-signal/collective diagnostics at the same
time system-wide. Therefore a signal SYNC is needed to latch the input-signals/collective diagnostics at the given
time, otherwise the input-signals/collective diagnostics have to be actualized continously with the system clock
clk_500k.
The filtered data and diagnostics can be synchronized on the falling edge of the SYNC pin or “frozen” by holding
SYNC Low (see Figure 29 and Table 17).
The filtered input data will be latched in the input-value-register and the filtered wire-break diagnosis (inclusive CFbit) will be latched into the collective diagnosis register every data-cycle when the SYNC-signal is in high state or
with the falling edge of SYNC . When the SYNC-signal is in low state the input-data-register and the collective
diagnosis register won’t be updated any longer. In the same way the SYNC-signal actualizes the information of
the global and internal error register.
The SYNC-signal doesnot affect the operation of the internal filtering-structures.
Channel
Input
tsyncper
SYNC
tsyncw
int. clock
tsynccon
Filtered
Data
tsyncmin
/CS
SYNC_Timing.vsd
Figure 29
Data Sheet
SYNC Operation Timing
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ISO1I813T
Functional Description
3.10
Write-Read- Access and Read-Read-Access for Different Applications
Depending on the application different timing requirements on the CS-idle cycle (CS = high) or on the CS-period
have to be obeyed ( Figure 30 ). The parameters are specified in the electrical requirements. The verification of
the parameter tRD_PER is performed in the way that a wirebreak signal for 4 usec is generated, after the propagation
delay over the sense chip and the CT the corresponding DIAG-bit (plus an uncertainty of +- 1 cycle (fscantyp )) has
to be detected. After reading the DIAG-register it has to be assured that the DIAG-register has been cleared (after
about 2 cycles with an uncertainty of +- 1 cycle (fscantyp )).
Read-Timing-Parameters for Different Applications
(Example for Serial Mode ; also Valid for Parallel Mode )
Write Coefil Register /
Read the same Coefil Register
...
/CS
needed to synchronize data
tCSD_WRRD =
min 4,8 usec
SCLK
Read Diagnostic Register / Read Diagnostic Register
tRD_PER =
min 2,3 usec
/CS
clear operation of diagnostic register
may not be performed
at the begin of the next read -access
min 0,5 usec
to be tested in
1. serial mode 00, only 8 bits
2. parallel mode
(specify DIAG-address in an „ALE“ -cycle,
then read without changing the address
SCLK
Read Arbitrary Register / Read Different Register
t CSD =
min 0,1 usec
to be tested in serial mode 10 :
write COEFIL0,…,7 with data 0,…,7 ;
read COEFIL0,…,7 sequentially with the specified t CSD-time;
SCLK = 5 MHz
/CS
SCLK
Figure 30
Data Sheet
Critical Timing Parameters for Write-Read-Access or Read-Read-Access
36
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ISO1I813T
Standard Compliance
4
Standard Compliance
The ISO1I813T allows the design of a sensor interface compliant with the standard requirements listed below:
System Insulation Characteristics as shown in Table 3,
System Immunity Characteristics as shown in Table 5.
There requirements are valid for an application using the ISO1I813T including external circuitry (as proposed in
Figure 31), not for the IC alone.
Note: When the IC is not supplied, probing of the digital input interface is still possible due to the external circuitry,
i.e. the 12k resistor and the LED. In addition to the current through the LED a small current IIxH flows through
the pins IxH and IxL.
VFI
VBB
VCC
TS
330n
DC
ENA
SW1
8 sensors
WB
IN0
12k
I0H
2k
I0L
IN7
12k
I7H
2k
I7L
D
E
S
E
R
I
A
L
I
Z
E
S
E
R
I
A
L
I
Z
E
SW2
digital
filter
/ERR
L
O
G
I
C
SYNC
µC
/CS
parallel
or serial
interface
digital
filter
e.g.
XE166
Rosc
GNDFI
GND
GNDBB
ISO1I813T
Figure 31
Recommended Application Circuit
Table 2
System Absolute Maximum Ratings
Parameter
Symbol
Values
Min.
Typ.
Unit
Max.
Field Input Voltage
Overvoltage 1300 ms
VFIov
-45
+45
V
Input Voltage INx
VINx
-45
+45
V
I
Figure 32
Data Sheet
Note /
Test Condition
VISO
RIO ,CIO
O
System Insulation Characteristics
37
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ISO1I813T
Standard Compliance
Table 3
System Insulation Characteristics
Parameter
Symbol
Values
Min.
Typ.
Pollution Degree (DIN VDE
0110/1.89, DIN EN 60664-1)
Unit
Max.
Note /
Test Condition
2
Minimum External Clearance
CLR
6.7
mm
Minimum External Creepage
CPG
6.2
mm
Maximum Working Insulation
Voltage
VISO
500
VAC
1 min duration1)
1) not subject to production test, verified by characterization
Approvals:
UL1577
Certificate Number 20120309-E311313
Data Sheet
38
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ISO1I813T
Electrical Characteristics
5
Electrical Characteristics
This section comprises:
•
•
•
Operating Conditions and Power Supply (see Chapter 5.2)
Electrical Characteristics Input Side (see Chapter 5.3)
Electrical Characteristics Microcontroller Interface (see Chapter 5.4)
Tolerance values always contain the sum of process-related tolerance values and tolerance-values based on the
temperature drift within the specified temperature range.
5.1
Absolute Maximum Ratings
All voltages at pins 25 to 48 are measured with respect to ground GNDBB. All voltages at pins 1 to 24 are
measured with respect to GND. The voltage levels are valid if other ratings are not violated. The two voltage
domains VCC, GND and VBB, GNDBB are internally electrically isolated.
Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This
is a stress rating only and functional operation of the device at these or any other conditions above those indicated
in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for
extended periods may affect device reliability.
Table 4
Absolute Maximum Ratings
Parameter
Symbol
Value
Min.
Max.
Unit
Note /
Test Condition
Power Dissipation
must not exceed
max-value
Continuous Voltage at pin VBB
VVBB
-0.3
45
V
Peak Voltage VBB, Overvoltage 500 ms
VVBB
-0.3
45
V
Supply Voltage VCC
VVCC
-0.3
6.5
V
Continuous Voltage at logic pins 1 - 24 (except VLOG
VCC and GND pins)
-0.3
6.5
V
Continuous Voltage at pin TS, WB
-0.3
6.5
V
TJ
-40
150
°C
Storage Temperature
TS
-50
150
°C
Power Dissipation
Ptot
800
mW
Input Voltage Range
VIxH
-45
45
V
Input Voltage Range
VIxL
-0.3
5
V
Error Pin Sink Current (ERR=0)
IERRsink
5
mA
VERR < 0.25·VVCC
Error Pin Sink Current (CRCERR=0)
ICRCsink
5
mA
VERR < 0.25·VVCC
DC-DC switch outputs 1/2
SW1/2
20
V
Electrostatic discharge voltage
(Human Body Model)
according to JESD22-A114-B
VESD
–
–
2.5
kV
Electrostatic discharge voltage
(Charge Device Model)
according to ESD STM5.3.1 - 1999
VESD
–
–
1.5
kV
Junction Temperature
Data Sheet
39
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ISO1I813T
Electrical Characteristics
5.2
Operating Conditions and Power Supply
For proper operation of the device, absolute maximum rating (Chapter 5.1) and the parameter ranges in Table 5
must not be violated. Exceeding the limits of operating condition parameters may result in device malfunction or
spec violations. The power supply pins VBB and VCC have the characteristics given in Table 7.
Table 5
Operating Range
Parameter
at Tj = -40 ... 125°C
Symbol
Supply Voltage Logic VCC
Supply Voltage Senses VBB
Value
Unit
Note /
Test Condition
Min.
Max.
VVCC
2.85
5.5
V
related to GND
VVBB
9.6
35
V
related to GNDBB
Continuous VBB Voltage in Self-Power Mode VVBBDC
12
16
V
see Figure 5 and
Table 8 for operation
points1)
Ambient Temperature
TA
-40
85
°C
Junction Temperature
TJ
-40
125
°C
Common Mode Transient
dVISO/dt
-25
25
kV/s
Magnetic Field Immunity
|HIM|
30
A/m
IEC61000-4-8
Symbol
Limit Values
Unit
Note /
Test Condition
1) recommended for operation
Table 6
Thermal Characteristics
Parameter
at Tj = -40 ... 125°C, Vbb=9.6...35V, VCC=2.85...5.5V,
unless otherwise specified
Min.
Max.
Thermal resistance junction - case top
RthJC_Top
15.0.
K/W
measured on top
side1)
Thermal resistance junction - case bottom
RthJC_Bot
13.8.
K/W
1)
Thermal resistance junction - pin
RthJP
11.8
K/W
1)
Thermal resistance @ 2 cm² cooling area2)
(thermal conductance only by radiation and
free convection)
Rth(JA)
88.6
K/W
1)
1) not subject to production test, specified by design
2) Device on 50 mm x 50 mm x 1.5 mm epoxy PCB FR4 with 2 cm² (one layer, 35 µm thick) copper area. PCB is vertical
without blow air.
Table 7
Electrical Characteristics of the Power Supply Pins
Parameter
at Tj = -40 ... 125°C, Vbb=9.6...35V,
VCC=2.85...5.5V, unless otherwise
specified
Symbol
VBB UVLO startup threshold
VVBBon
VBB UVLO shutdown threshold
VVBBoff
Min.
VBB UVLO Hysteresis
VVBBhys
VBB missing voltage OFF (MV)
threshold
VVBBmvoff
Data Sheet
Values
Typ.
Unit
Max.
9.6
8.0
V
V
1
1)
V
13.9
40
Note /
Test Condition
V
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ISO1I813T
Electrical Characteristics
Table 7
Electrical Characteristics of the Power Supply Pins (cont’d)
Parameter
at Tj = -40 ... 125°C, Vbb=9.6...35V,
VCC=2.85...5.5V, unless otherwise
specified
Symbol
VBB missing voltage ON (MV)
threshold
VVBBmvon
VBB undervoltage OFF (UV)
threshold
VVBBuvoff
VBB undervoltage voltage ON
(UV) threshold
VVBBuvon
Glitch filters for VBB missing
voltage and undervoltage
TVBBfil
8
µs
2)
Undervoltage Current for VBB
IVBBuv
3.5
mA
VVBB < VVBBon
Quiescent Current VBB
IVBBq
5
mA
VVBB = 24 V, IINx = 0,
VCC = 0V
Startup Delay (time between
VBBon/VCCon and first data
output)
tVXXon
26
µs
Digital Filter
bypassed 2) 3)
VCC UVLO startup threshold
VVCCon
VCC UVLO shutdown threshold
VVCCoff
VCC UVLO threshold hysteresis
VVCChys
0.1
V
Quiescent Current VCC
IVCCq
3.1
mA
VVCC = 5 V 2) 5)
VVBB = 0V
Quiescent Current VCC
IVCCq
2.3
mA
VVCC = 3.3 V 2) 5)
VVBB = 0V
Unit
Note /
Test Condition
140 mA
1)
2)
3)
4)
5)
Values
Min.
Typ.
Unit
Max.
12.1
Note /
Test Condition
V
17.0
15.0
V
V
2.85
2.5
V
V
4)
Note that the specified operation of the IC requires VVBB as given in Table 5
defined for fscantyp 500kHz
not subject to production test, specified by design
Note that the specified operation of the IC requires VVCC as given in Table 5
No Push-Pull Converter connected at SW1/2
Table 8
Self-Powered Supply Operation
Parameter
at Tj = -40 ... 125°C, Vbb=9.6...35V,
VCC=2.85...5.5V, unless otherwise
specified
Symbol
Values
ON Resistance at SW1/2
RDSON
2.3
Current Rating
ISW
140
mA
165
°C
1)
K
1)
Min.
Thermal overload trip temperature Tjt
Typ.
157
Thermal hysteresis
Tjt
1) not subject to production test, specified by design
Data Sheet
5
41
Max.
V 2.2, 2017-01-03
ISO1I813T
Electrical Characteristics
5.3
Electrical Characteristics Input Side
The electrical characteristics of the input side (pins 25-48) are given in Table 9. Note that some parameters refer
to IN0 to IN7 which are nodes of external circuitry (see Figure 10 or Figure 31). Electrical characteristics with
respect to these nodes are given for the system including the external circuitry and not for the IC alone.
See also Figure 11 for the different threshold parameters.
Table 9
Sensors Inputs
Parameter
at Tj = -40 ... 125°C, Vbb=9.6...35V,
VCC=2.85...5.5V, unless otherwise
specified
Symbol
Sink Current Limit at Saturation
Edge Type 1/3
IINxsnkC13
IINxsnkC2
Sink Current Limit at Saturation
Edge Type 2
Values
Unit
Note /
Test Condition
2.3
mA
VVBB=VVBBon,
VINx=6.7V, VIxL1.2V
3.3
mA
VVBB=VVBBon,
VINx=6.7V, VIxL2V
Min.
Typ.
Max.
Sink Current Limit at Maximum
Input Voltage Type 1/3
IINxsnkM13
3.4
mA
VVBB=35V, VINx=30V,
VIxL2.5V
Sink Current Limit at Maximum
Input Voltage Type 2
IINxsnkM2
4.8
mA
VVBB=35V, VINx=30V,
VIxL2.5V
LED Supply Current at Maximum
Input Voltage, Type 1/3
IIxLmax
2.1
3.1
mA
VVBB=35V, VINx=30V,
VIxL2.5V
LED Supply Current at Maximum
Input Voltage, Type 2
IIxLmax
3.1
4.5
mA
VVBB=35V, VINx=30V,
VIxL2.5V
LED Supply Current at High
Threshold Type 3
IIxL3
1.5
2.5
mA
VVBB=VVBBon,
VINx=11V, VIxL2.5V
LED Supply Current at High
Threshold Type 2
IIxL2
2.3
3.6
mA
VVBB=VVBBon,
VINx=11V, VIxL2.5V
LED Supply Current at High
Threshold Type 1
IIxL1
1.6
2.6
mA
VVBB=VVBBon,
VINx=15V, VIxL2.5V
LED Voltage recommended
VFLED
1.9
3.0
V
1)
Sense Voltage Switching
Threshold, LH (Type 1)
VINxDset(1)
15
V
VVBB=24V
VIxL2.5V 2)
Sense Voltage Switching
Threshold HL (Type 1)
VINxDclr(1)
V
VVBB=24V
VIxL2.5V 2)
Hysteresis HL (Type 1)
VINxDhys(1)
Sense Voltage Switching
Threshold LH (Type 2)
VINxDset(2)
Sense Voltage Switching
Threshold HL (Type 2)
VINxDclr(2)
Hysteresis HL (Type 2)
1
VINxDset(3)
Sense Voltage Switching
Threshold HL (Type 3)
VINxDclr(3)
V
11
7
VINxDhys(2)
Sense Voltage Switching
Threshold LH (Type 3)
Data Sheet
11
0.65
42
VVBB=24V
VIxL2.5V 2)
V
VVBB=24V
VIxL2.5V 2)
V
11
7
V
V
VVBB=24V
VIxL2.5V 2)
V
VVBB=24V
VIxL2.5V 2)
V 2.2, 2017-01-03
ISO1I813T
Electrical Characteristics
Table 9
Sensors Inputs (cont’d)
Parameter
at Tj = -40 ... 125°C, Vbb=9.6...35V,
VCC=2.85...5.5V, unless otherwise
specified
Symbol
Values
Hysteresis HL (Type 3)
VINxDhys(3)
0.7
V
Input Sink Current when VVBB=0
IIxHq
300
µA
VVBB=0V
VIxH=30V , Ixl = open
Unit
Note /
Test Condition
Min.
Typ.
Unit
Max.
Note /
Test Condition
1) not subject to production test, specified by design
2) clamped to 2.5V if “logic 1”, internally limited if logic “0”
Table 10
Setting at the Configuration Pins (TS, WB)
Parameter
at Tj = -40 ... 125°C, Vbb=9.6...35V,
VCC=2.85...5.5V, unless otherwise
specified
Symbol
Values
Min.
Typ.
Max.
TS Pull-Down Resistance for Type RTSpd1
1 Selection
33
1)
TS Pull-Down Resistance for Type RTSpd2
2 Selection
33
k
1) 2)
TS Pull-Down Resistance for Type RTSpd3
3 Selection
330
k
1)
WB pin source current
IWBsource
12.5
µA
RWB = 40k
WB pin detection current
IWB
80
µA
RWB = 40k
Wirebreak detection blanking time tWB_blank
1
µs
3) 4)
tTS_blank
2
µs
3) 4)
Type selection blanking time
Max. WB Pin Load Capacitance
CWBmax
5
pF
1)
Max. TS Pin Load Capacitance
CTSmax
20
pF
1)
1)
2)
3)
4)
required for operation
Only 4 channels can be used for this case.
not subject to production test, specified by design
defined for fscantyp 500kHz
Data Sheet
43
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ISO1I813T
Electrical Characteristics
5.4
Electrical Characteristics Microcontroller Interface
For the Parallel Mode see Table 11, Table 12, Table 14 and Table 15,
For the Serial Mode see Table 11, Table 12, Table 14 and Table 16.
Timing characteristics refer to CL < 50 pF and RL > 10 k.
Table 11
Sensor Scanning and Averaging
1)
Parameter
at Tj = -40 ... 125°C, Vbb=9.6...35V,
VCC=2.85...5.5V, unless otherwise
specified
Symbol
Typical Scan Frequency
fscantyp
440
Scan Frequency Range
fscanrge
50
Input Scan Propagation Delay
Filter Bypass delay
Values
Min.
Typ.
Unit
Note /
Test Condition
510
kHz
ROSC = 22.1 k
without tolerance
500
kHz
2)
Max.
refer to Figure 8
tctdelay
8
µs
1)
tbypass
2
µs
1)
1.2
µs
including maximum
channel jitter 1)
Minimal Filter Output valid time
tcsrdy
(until Readout i.e. CS falling edge)
applies equally to
all channels
Channel Jitter3)
tchnjitter
0
2
µs
for tFILT00 and tFILT01 1)
Channel Jitter
tchnjitter
0
1.5
%
for tFILT02 to tFILT07 1)
Default Digital Filter Monitoring
Time
tFILTdef
4
us
bypass1))
Digital Filter Monitoring Time
tFILT00
0.050
ms
FT=00H 1)
Digital Filter Monitoring Time
tFILT01
0.100
ms
FT=01H 1)
Digital Filter Monitoring Time
tFILT02
0.400
ms
FT=02H 1)
Digital Filter Monitoring Time
tFILT03
0.800
ms
FT=03H 1)
Digital Filter Monitoring Time
tFILT04
1.600
ms
FT=04H,prescaler
used1)
Digital Filter Monitoring Time
tFILT05
3.200
ms
FT=05H, prescaler
used1)
Digital Filter Monitoring Time
tFILT06
10.000
ms
FT=06H, prescaler
used1)
Digital Filter Monitoring Time
tFILT07
20.000
ms
FT=07H, prescaler
used1)
Digital Filter Monitoring Time
tFILToff
4.0
µs
FT=08H..0FH 1)
1) valid for fscantyp = 500kHz
2) not subject to production test, specified by design
3) the channel jitter is defined in Figure 18
Data Sheet
44
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ISO1I813T
Electrical Characteristics
Table 12
Setting at the Configuration Pin (Rosc) see also Figure 8
Parameter
at Tj = -40 ... 125°C, Vbb=9.6...35V,
VCC=2.85...5.5V, unless otherwise
specified
Symbol
Rosc Pin Source Current
IRoscsrc
Rosc Resistance to GND
RRosc
Rosc Pin Regulated Voltage
VRoscreg
Values
Min.
Typ.
22.1
221
1.2
Max. Rosc Pin Load Capacitance CRoscmax
Note /
Test Condition
µA
ROSC = 22.1 k
k
E96 resistor
Max.
50
18.4
Unit
V
5
pF
1)
Unit
Note /
Test Condition
1) required for operation
Table 13
Error Pins (ERR, CRCERR)
Parameter
at Tj = -40 ... 125°C, Vbb=9.6...35V,
VCC=2.85...5.5V, unless otherwise
specified
Symbol
Error Pin Pull-Up Resistance
(ERR=1)
RERRpu
Maximum Switching Frequency
(ERR, CRCERR)
fSW
Error Pin Low voltage
VERROL
Values
Min.
Typ.
Max.
50
10
k
500
kHz
1)
0.25·VVC
V
IERROL = 5mA
C
1) not subject to production test, specified by design
Table 14
Logical Pins (RD, WR, ALE, MS0/1, CS, AD7:AD0, SCLK, SDO, SSO, SDI, SSI, SEL)
Parameter
at Tj = -40 ... 125°C, Vbb=9.6...35V,
VCC=2.85...5.5V, unless otherwise
specified
Symbol
Input Voltage High Level
VIH
0.7·VVCC
VVCC+0.3
V
Input Voltage Low Level
VIL
-0.3
0.3·VVCC
V
Input Voltage Hysteresis
VIhys
Output Voltage High Level
VOH
0.75·VVCC
1·VVCC
V
IOH = 5mA
Output Voltage Low Level
VOL
0
0.25·VVCC V
IOL = 5mA
Output Voltage High Level
VOH
2.75
VOL
0.1
Output Voltage Low Level
Values
Min.
Typ.
Unit
Max.
100
Note /
Test Condition
mV
V
VVCC = 2,85 V, IOH =
1mA1)
V
VVCC = 2,85 V - 5,5 V,
IOL = 1mA
1) Typical values over temperature derived with IOH = 5 mA and IOL = 5 mA ; extrapolated to IOH = 1mA and IOL = 1mA
according to simulation results, voltage drop scales with a factor of 1/5 with the change of 5 mA to 1 mA, not subject to
production test
Data Sheet
45
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ISO1I813T
Electrical Characteristics
Table 15
Parallel Interface
Parameter
at Tj = -40 ... 125°C, Vbb=9.6...35V,
VCC=2.85...5.5V, unless otherwise
specified
Symbol
Values
Input Pull Up Resistance
(RD, WR, CS)
RPU
50
k
Input Pull Down Resistance (ALE) RPD
50
k
Min.
Typ.
Unit
Max.
Note /
Test Condition
Read Request Frequency
fRD
0.06
5
MHz
repeated read access
during CS = 0
Read Request Period (1/fRD)
tRD
200
15000
ns
repeated read access
during CS = 0
CS Disable time (CS high time
between two read accesses on
different registers)1)
tCSD
100
ns
Read-Period for two read
accesses on the same register
(especially for DIAG,
GLERR,INTERR)2)
tRD_PER
2300
ns
defined for fscantyp
4800
ns
defined for fscantyp
tCSD_WRRD
CS Disable time (CS high time
between a write access and a read
access for reading back the written
value)
AD0-7 Output valid by read
tADvalid
/RD setup time
tRD_su
55
ns
/WR setup time
tWR_su
55
ns
/RD Low duration
tRDlow
100
ns
/WR Low duration
tWRlow
100
ns
/RD hold time
tRD_hd
0
20
ns
/WR hold time
tWR_hd
0
20
ns
tlat
600
tclrrdy
4
/WR latency time
/RD Pad to DIAG, GLERR and
INTERR Registers Update (Bits
Clearing)
55
ns
ns
6.2
80
µs
ns
AD0-7 Output disable time
tfloat
AD0-7 Data bus setup time
tAD_su
40
ns
AD0-7 Data bus hold time
tAD_hd
50
ns
1) not subject to production test, specified by design, verified on subset of ICs,over temperature and supply voltage, read of
COEFIL-registers alternatively (Figure 30)
2) not subject to production test, specified by design, verified on subset of ICs,over temperature and supply voltage,
permanent read of DIAG-register with a frequency of 500 kHz, supervision of setting of wirebreak-signal and clearing by
read (Figure 30)
Data Sheet
46
V 2.2, 2017-01-03
ISO1I813T
Electrical Characteristics
Table 16
Serial Interface
Parameter
at Tj = -40 ... 125°C, Vbb=9.6...35V,
VCC=2.85...5.5V, unless otherwise
specified
Input Pull Up Resistance ( CS)
Symbol
Values
Min.
Typ.
Unit
Max.
RPU
50
k
Input Pull Down Resistance (SCLK, RPD
SDI)
50
k
Note /
Test Condition
Serial Clock Frequency
fSCLK
Serial Clock Period (1/fSCLK)
tSCLK
200
ns
Serial Clock High Period
tSCLKH
100
ns
Serial Clock Low Period
tSCLKL
100
ns
Minimum CS Hold time (rising edge tCSH
of SCLK to rising edge of CS)
40
ns
CS Disable time (CS high time
between two read accesses on
different registers)1)
100
ns
2300
ns
defined for fscantyp
tCSD_WRRD 4800
CS Disable time (CS high time
between a write access and a read
access for reading back the written
value)
ns
defined for fscantyp
Minimum Data setup time (required tSU
time SDI to rising edge of SCLK)
5
ns
Minimum Data hold time (rising
edge of SCLK to SDI)
15
ns
Minimum CS to SDO/SSO - Output tCS_valid
valid time
50
ns
/CS falling edge to first rising SCLK tSCLK_su
edge
80
ns
tCSD
Read-Period for two read accesses tRD_PER
on the same register (especially for
DIAG, GLERR,INTERR)2)
tHD
5
MHz
Minimum SCLK to SDO/SSO Output valid time
tSCLK_valid
80
ns
Minimum SDO/SSO - Output
disable time
tfloat
65
ns
New serial mode activation time
(MS0/MS1 change to earliest
interface access)
tMS_rdy
4
µs
no µController access
allowed during the
change3) )4)
1) not subject to production test, specified by design, verified on subset of ICs,over temperature and supply voltage, read of
COEFIL-registers alternatively (Figure 30)
2) not subject to production test, specified by design, verified on subset of ICs,over temperature and supply voltage,
permanent read of DIAG-register with a frequency of 500 kHz, supervision of setting of wirebreak-signal and clearing by
read (Figure 30)
3) not subject to production test, specified by design
4) valid for fscantyp = 500kHz
Data Sheet
47
V 2.2, 2017-01-03
ISO1I813T
Electrical Characteristics
Table 17
Sync and Coefficient Update Timing
Parameter
at Tj = -40 ... 125°C, Vbb=9.6...35V,
VCC=2.85...5.5V, unless otherwise
specified
Symbol
Minimum time interval for µCRead-Access after falling edge of
SYNC-signal
tsyncmin
Values
Min.
Typ.
500
Unit
Max.
Note /
Test Condition
ns
tsynccon
Minimum time interval for
switching from sync mode into the
continuous mode
3
µs
Minimum width of SYNC-signal
tsyncw
200
ns
SYNC-period
tsyncper
500
ns
Minimal time interval between 2
write cycles for filter time
programming
tfilwr
4
µs
1)
Minimal time interval between a
write cycle and a read back cycle
for filter time programming
tfilrd
4
µs
1)
4
µs
1)
tfilrdy
Minimal time interval between a
filter time write cycle and updated
filter data freeze
1) valid for fscantyp = 500kHz
Data Sheet
48
V 2.2, 2017-01-03
ISO1I813T
Registers of Microcontroller-Interface-Chip
6
Registers of Microcontroller-Interface-Chip
This chapter describes the µController Chip registers.
Table 6-1
Register Bit Type Definition
Type
Symbol
Description
Read
r
The bit can be read
Read only, updated by hardware
h
The bit is updated by the device itself (for instance: sticky bit)
Write
w
The bit can be written
6.1
µController Chip Registers Overview
The Table 6-2 gives an overview of the µController Chip registers and their address.
Table 6-2
Registers Summary
Short Name
Description
Access
Rights1)
Address
A7-A0
DIAG
Collective Diagnostics Register (Wire-Break Detection)
rh
00H
INPDATA
Input Data Register (Input Channel Data)
rh
02H
GLERR
Global Error Register
rh
04H
COEFIL0
(COEFIL0-7)
Filter Time for the Data and the Diagnostics of Channel 0
rw
06H, 86H
COEFIL1
Filter Time for the Data and the Diagnostics of Channel 1
rw
08H, 88H
COEFIL2
Filter Time for the Data and the Diagnostics of Channel 2
rw
0AH, 8AH
COEFIL3
Filter Time for the Data and the Diagnostics of Channel 3
rw
0CH, 8CH
COEFIL4
Filter Time for the Data and the Diagnostics of Channel 4
rw
0EH, 8EH
COEFIL5
Filter Time for the Data and the Diagnostics of Channel 5
rw
10H, 90H
COEFIL6
Filter Time for the Data and the Diagnostics of Channel 6
rw
12H, 92H
COEFIL7
Filter Time for the Data and the Diagnostics of Channel 7
rw
14H, 94H
INTERR
Internal Error Register
rh
16H
GLCFG
Global Configuration Register
rw
18H , 98H
Reserved
n.a.
other
1) r=read-only, rw=read-write (timing restrictions apply), rh=read update by hardware
Data Sheet
49
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ISO1I813T
Registers of Microcontroller-Interface-Chip
6.2
Presentation of the Registers
The µController side chip provides several 8-bit registers which can be accessed by the µController over the serial
or parallel interface. Since those registers are located in the chip internal clock domain, the access is controlled
by an internal arbiter processing the read / write requests as well as the synchronization requirements especially
to freeze the internal registers when the isochronous mode is used (pin SYNC).
Some timing requirements apply to guarantee the data consistency provided to the µController (see Electrical
Characterisitcs).
6.2.1
Sensor Registers
The sensor data and status (Wire-Break) detected at the channel inputs IxH/L by the sensor side chip are available
in the INPDATA and DIAG registers respectively. The bits of the DIAG register have a sticky property i.e.once a
wire-break condition has been detected (after the filter time), the respective bits remain set. A read access resets
the sticky bits under the condition, that no wirebreak is detected anymore and no wirebreak information is pending
at the filter outputs anymore. In the serial modes, both registers are per default driven out at the SDO/SSO outputs.
6.2.2
Status Registers
The GLERR and INTERR registers contains the status of the IC. GLERR monitors the application relevant
parameters: undervoltage (UV), missing voltage (MV) and collective fault (CF) whereas INTERR indicates the
status of internal signals important for the proper operation of the IC: wait for sense chip (W4S), transmission error
(TE) and DC-DC error (DC_ERR) in case of self powered mode. Those registers can be read over the serial or
parallel interface especially to identify the fault causing the error pin (ERR) to be pulled down. There are different
options to read those registers: either through direct addressing (e.g. parallel mode) or through the telegram mode
when the serial interface is selected where the bits are shifted out during the transaction.
The bits of the GLERR and INTERR registers have a sticky property and remains set as long as they are not
cleared by a read access and the fault condition is not detected anymore. The Table 6-3 presents which bits are
cleared depending on the serial mode and the SPI channel. In the case of the parallel interface, the bits cleared
are the ones whose address is contained in the internal ALE register. Only the bits having been read can be
cleared. Since the bits are frozen when a read access is detected, it is guaranted that only these bits read over
the serial or parallel interface can be cleared: if the status of the bits changes during the transaction, they will not
be cleared.
Table 6-3
Clear of the Sticky Bits by Serial Interface
Mode 0
Mode 1
Mode 2
Mode 3
Read /
Write
Read
Read
Write
Read
Write
Read
Write
SPI
channel-0
n.a.
RDREG1)
DIAG
RDREG1)
DIAG
RDREG 1)
UV, MV,
W4S,
DC_ERR 2)
DIAG
UV, MV,
W4S,
DC_ERR 2)
SPI
channel-1
DIAG
DIAG
RDREG1)
DIAG
UV, MV,
W4S, TE,
DC_ERR
DIAG
RDREG1)
DIAG
UV, MV,
W4S, TE,
DC_ERR
DIAG
RDREG1)
DIAG
UV, MV,
W4S, TE,
DC_ERR
1) The bits of register which is being read (Direct addressing)
2) depends on setting of DC_ENA
Data Sheet
50
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ISO1I813T
Registers of Microcontroller-Interface-Chip
6.2.3
Configuration Registers
The filter times of each channel can be programmed with the COEFIL0-7 registers. Since the write access requires
some time to update the internal registers, specific timing requirements apply especially between 2 successive
programming operations. The COEFIL0-7 registers define as well if the wire break detection should be masked or
not in the DIAG register.
Only one of the COEFILx registers can be written at the same time (in serial mode only one SPI channel can be
used). It is possible to program a filter time and simultaneously to read out another register e.g. another channel
filter time.
Furthermore, the behaviour of the IC can be customized with the GLCFG register:
•
•
•
The ratio of the switching frequency of the DC-DC ouput stage over the internal clock frequency set at the pin
CLKADJ can be changed from 1:1 (default) to 2:1.
A soft reset can be generated to clear the filter stages and reinitialize the data transmission between Sense
side and µController side chips.
The automatical clearing of the DIAG register can be disabled, when the register is read without direct
addressing.
Data Sheet
51
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ISO1I813T
Registers of Microcontroller-Interface-Chip
6.3
µController Registers Description
6.3.1
Collective Diagnostics Register
This register contains the filtered values of the Wire-Break detection of the channels 0 to 7.
This register can be read by the µController. The WB[x] are set with the occurence of a wire break at input line x
and can only be cleared by a read operation of this register if the wire break is not detected anymore (sticky bits).
As soon as one of those bits is set, the CF-bit of the GLERR is set as well.The Chapter 6.2.2 explains the way
the sticky bits are cleared.
DIAG
Collective Diagnostics Register
(Address : 00H)
7
6
5
4
3
2
1
0
WB7
WB6
WB5
WB4
WB3
WB2
WB1
WB0
Reset Value: 00H
rh
Field
Bits
Type Description
WB[x]
7-0
rh
6.3.2
Channel Wire-Break Detected
This bit indicates if a Wire-Break has been detected at the channel x.
0B
No wire-break signal detected at channel x.
1B
A wire-break condition has been detected at channel x.
Input Channel Data Register
This register contains the filtered values of the input data detected at the channels 0 to 7.
This register can be read by the µController.
When the parallel interface is selected, the default address contained in the internal ALE register is the address
of this register.
INPDATA
Input Data Register
(Address : 02H )
7
6
5
4
3
2
1
0
D7
D6
D5
D4
D3
D2
D1
D0
Reset Value: 00H
rh
Field
Bits
Type Description
D[x]
7-0
rh
Data Sheet
Input Channel Data
This bit represents the input data detected at the pins IxH of the channel x
depending on the sensor type selected.
0B
Input Data below the input threshold.
1B
Input Data above the input threshold.
52
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ISO1I813T
Registers of Microcontroller-Interface-Chip
6.3.3
Global Error Register
This register contains the status of the IC parameters monitored during operation.
This register can only be read by the µController. The CF-bit is the OR-combination of all the bits of the DIAG
register. The bits of this register are sticky and can only be cleared when the bits are read out and the faults are
not detected anymore (refer to Chapter 6.2.2 for more details).
The UV and MV bits are reset to 1 when the VBB voltage is below the UVLO threshold or during transmission error
between the sensor side and µController side. The bits of the GLERR register are used in the generation of the
signal of the error pin (ERR) and shifted out in some of the serial modes when the SPI interface is selected.
GLERR
Global Error Register
(Address : 04H)
7
6
5
4
0
3
2
1
0
UV
MV
CF
r
Reset Value: 06H
rh
Field
Bits
Type Description
CF
0
rh
Channel Fault
This bit indicates that at least one wire-break condition has been detected at the
channel inputs.
0B
No wire-break condition has been detected at the channels .
1B
At least one channel shows a wire-break condition .
MV
1
rh
VBB Missing Voltage
This bit indicates if a missing voltage condition has been detected at the VBB pin.
0B
No missing voltage detected at VBB.
1B
A missing voltage condition has been detected at VBB.
UV
2
rh
VBB Under Voltage
This bit indicates if an undervoltage condition has been detected at the VBB pin.
0B
No undervoltage detected at VBB.
1B
An undervoltage has been detected at VBB.
0
[7:3]
r
Reserved
returns 0 if read.
Data Sheet
53
V 2.2, 2017-01-03
ISO1I813T
Registers of Microcontroller-Interface-Chip
6.3.4
Filter Time of Channel 0-7 Register
These registers define the filter time for both the data and diagnostics for each channel IN0-7. The wirebreak bit
can additionally be masked in the DIAG register. These registers can be modified and read by the µController.
COEFIL0-7
Channel 0-7 Filter Time Register
(Address : 06H - 14H for read access, 86H - 94H for write access, )
7
6
5
4
0
0
0
MWB
FT
rw
rw
r
3
2
1
Reset Value: 1FH
0
Field
Bits
Type Description
FT
[3:0]
rw
Filter Time
This bit field configures the filter time for averaging the Data and the Wire-Break
signals detected at channels IN0-7.
00H 50 µs
01H 100 µs
02H 400 µs
03H 800 µs
04H 1,6 ms
05H 3,2 ms
06H 10 ms
07H 20 ms
08H - 0FHbypassed (default)
MWB
4
rw
Mask Wire-Break Detection
This bit masks the filtered signal of the Wire-Break detection.
0B
The wire-break signal is masked and is not visible in the DIAG register.
1B
The wire-break signal is not masked and appears in the DIAG register.
(default).
0
[7:5]
r
Reserved
returns 0 if read; should be written with 0.
Data Sheet
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V 2.2, 2017-01-03
ISO1I813T
Registers of Microcontroller-Interface-Chip
6.3.5
Internal Error Register
This register contains the status of the internal errors monitored for safe IC operation. The bits are sticky and
remain set once the fault condition is detected until a read operation occurs and the faults are resolved. The bits
of the INTERR register are used in the generation of the signal of the error pin (ERR) and shifted out in some of
the serial modes when the SPI interface is selected. On power up (UVLO), the bits W4S and TE are preset to High
and will have to be cleared by a read access during the startup phase.
INTERR
IC Status Register
(Address : 16H)
7
6
5
4
0
3
2
1
0
W4S
TE
DC_
ERR
r
Reset Value: 06H
rh
Field
Bits
Type Description
DC_ERR
0
rh
DC-DC Converter Error
This bit indicates if overload condition has been detected at the SW1 or SW2
switches.
0B
No overload detected.
1B
Overload detected.
TE
1
rh
Transmission Error
This bit indicates if a transmission error has been detected over the Coreless
Transformer between the Sense side chip and the µController side chip.
0B
No transmission error.
1B
Transmission error.
W4S
2
rh
Wait for Sense Chip
This bit indicates the Sense side chip is correctly supplied and ready for
transmission.
0B
Sense Side is ready.
1B
Sense Side is not ready because of insufficient supply or long transmission
error.
0
[7:3]
r
Reserved
returns 0 if read.
Data Sheet
55
V 2.2, 2017-01-03
ISO1I813T
Registers of Microcontroller-Interface-Chip
6.3.6
Global Configuration Register
This register contains configuration parameters for the sensor type selection as well as the DC-DC driver.
GLCFG
Global Configuration Register
(Address : 18H for read access, 98H for write access, )
7
6
5
4
3
2
DIAG SW_R
DCK
ACLR ST
0
r
rw
rw
rw
1
Reset Value: 00H
0
0
r
Field
Bits
Type Description
0
1:0
rw
Reserved
returns 0 if read; should be written with 0.
DCK
2
rw
DC-DC Driver Switching Frequency Ratio
This bit indicates the ratio between the sampling clock frequency set at Rosc and
the switching frequency of the DC-DC driver (pins SW1/2).
0B
DC-DC switching frequency is equal to the sampling frequency (1:1)
(default).
1B
DC-DC switching frequency is half to the sampling frequency (2:1).
SW_RST
3
rw
Soft-Reset for the Filtering Stage
This bit triggers the reset of the Filter registers
0B
No Reset
1B
Reset is generated for the Filter stage
DIAG_ACLR
4
rw
Diagnostics Automatical Clear
This bit selects if the DIAG register is automatically cleared after any access to
the DIAG register (especially for the second SPI channel at the SSO pin, see
Table 6-3). The diagnostics remain in both case sticky.
0B
Automatical clear after any access to the DIAG register (default)
Automatical clear disabled
1B
0
[7:5]
r
Reserved
returns 0 if read; should be written with 0.
Data Sheet
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ISO1I813T
Package Outline
Package Outline
A2
7
A
C
A1
c
O
0.10
L
C
D
D
B
0.20 C A-B D
F3
F4
F2
E
E1
Footprint
F1
1
b
0.08 M C A-B D
e
A
DOCUMENT NO.
Z8B00158954
1) DOES NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
DIM
A
A1
A2
b
c
D
E
E1
e
N
L
Θ
F1
F2
F3
F4
Figure 7-1
INCHES
MILLIMETERS
MAX
1.10
0.15
1.05
0.27
0.16
12.60
MIN
0.05
0.80
0.17
0.09
12.40
MIN
0.002
0.031
0.007
0.004
0.488
8.10 BSC
6.00
0.319 BSC
6.20
0.244
0.236
0.50 BSC
48
0.50
0°
MAX
0.043
0.006
0.041
0.011
0.006
0.496
SCALE
0
1.0
0
1.0
2mm
EUROPEAN PROJECTION
0.020 BSC
48
0.75
8°
0.020
0°
7.80
0.29
1.30
0.50
0.030
8°
0.307
0.011
0.051
0.020
ISSUE DATE
14.06.2011
REVISION
03
Package Outline TSSOP-48 (tie bar not drawn in outline)
Notes
1. You can find all of our packages, sorts of packing and others in our Infineon Internet Page “Packages”:
http://www.infineon.com/packages
2. Dimensions in mm.
Data Sheet
57
V 2.2, 2017-01-03
w w w . i n f i n e o n . c o m
Published by Infineon Technologies AG
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