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STWBC Datasheet, PDF (11/36 Pages) STMicroelectronics – Digital controller for wireless battery charger
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STWBC
Pinout and pin description
4.2
Pin description
Table 1. Pinout description
Pin no.
Pin name
Pin type API firmware description
Bin firmware description
1
UART_RX(1)
DI
UART RX link
UART RX link
2 PWM_AUX/GPIO_2(1) DO
3
I2C_SDA/DIGIN [4](1)
4
I2C_SCL/DIGIN [5](1)
PWM output or GPO
I2C_SDA / digital input 4
I2C_SCL / digital input 5
Not used, must not be connected
to any potential
inactive (internal pull-up)
inactive (internal pull-up)
5
DRIVEOUT [3]
DO
Output driver for low-side branch Output driver for low-side branch
right
right
6
GPIO_0(1)
DO
Digital output for the green light
indicator / general purpose I/O
Digital output for the green light
indicator
7
GPIO_1(1)
DO
Digital output for the red light
indicator / general purpose I/O
Digital output for the red light
indicator
8
CPP_INT_3
AI
Symbol detector
Symbol detector
9
CPP_INT_2
AI
Vmain monitor
Vmain monitor
10
CPP_REF
AI
External reference for CPP_INT_3 External reference for CPP_INT_3
(if not used, must be tied to GND) (if not used, must be tied to GND)
11
CPP_INT_1
AI
Symbol detector
Symbol detector
12
CPP_INT_0
AI
Symbol detector
Symbol detector
13
VDDA
PS
Analog power supply
Analog power supply
14
VSSA
PS
Analog ground
Analog ground
15
TANK_VOLTAGE
AI
LC tank voltage probe
LC tank voltage probe
16
VBRIDGE
Inactive (to be tied to GND)
Inactive (to be tied to GND)
17
SPARE_ADC(1)
Spare analog input (to be tied to
GND if not used)
Spare analog input (to be tied to
GND)
18
NTC_TEMP
AI
NTC temperature measurement. NTC temperature measurement.
19
ISENSE
AI
LC tank current measurement
LC tank current measurement
20
VMAIN
AI
Vmain monitor
Vmain monitor
21
DRIVEOUT [0]
DO
Output driver for low-side branch Output driver for low-side branch
left
left
22
DIGIN [0](1)
Digital input 0
Inactive (internal pull-up)
23
DIGIN [1](1)
Digital input 1
Inactive (internal pull-up)
24
DRIVEOUT [1]
DO
Output driver for high-side branch Output driver for high-side branch
left
left
25
DRIVEOUT [2]
DO
Output driver for high-side branch Output driver for high-side branch
right
right
26
DIGIN [2](1)
Digital input 2
Inactive (internal pull-up)
27
SWIM
DIO
Debug interface
Debug interface
DocID027322 Rev 3
11/36
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