20-Pin Connector#
All ChipWhisperer capture hardware and most ChipWhisperer targets use a standard 20-pin connector for connecting capture devices to targets. This connector carries power and I/O pins between the ChipWhisperer capture device and the target board.
There are some minor variations on pin functions depending on the hardware; these are noted below.
Pinout#
Tip
Each ChipWhisperer capture hardware unit comes with a handy sticker to make locating these pins easier.
1: 5V |
2: GND |
3: 3.3V |
4: HS1 |
5: nRST |
6: HS2 |
7: MISO |
8: VREF |
9: MOSI |
10: TIO1 |
11: SCK |
12: TIO2 |
13: PDIC/CS |
14: TIO3 |
15: PDID |
16: TIO4 |
17: GND |
18: 3.3V |
19: GND |
20: 5V |
Pin Descriptions#
Note
Note: directions are relative to the capture device.
I: input to ChipWhisperer capture device / output from target
O: output from ChipWhisperer capture device / input to target
Number |
Name |
Dir |
Description |
|---|---|---|---|
1 |
+5V (VUSB) |
O |
+5V to Target Device [1] |
2 |
GND |
O |
System ground. |
3 |
+3.3V |
O |
+3.3V to Target Device [2] |
4 |
HS1 |
I/O |
High Speed Input (normally clock input). |
5 |
nRST |
I/O |
Target reset Pin (active low). |
6 |
HS2 |
I/O |
High Speed Output (normally clock output). |
7 |
MISO |
I/O |
SPI input: MISO (for SPI + AVR Programmer). [5] |
8 |
VREF |
I |
|
9 |
MOSI |
I/O |
SPI output: MOSI (for SPI + AVR Programmer). [5] |
10 |
TIO1 |
I/O |
TargetIO Pin 1 - usually UART Rx. |
11 |
SCK |
I/O |
SPI output: SCK (for SPI + AVR Programmer). [5] |
12 |
TIO2 |
I/O |
TargetIO Pin 2 - usually UART Tx. |
13 |
PDIC/CS |
I/O |
PDI Programming Clock (XMEGA Programmer), or CS pin (SPI). Also used for STM32 bootloader. |
14 |
TIO3 |
I/O |
TargetIO Pin 3 - usually bidirectional IO for smartcard. |
15 |
PDID |
I/O |
PDI Programming Data (XMEGA Programmer). [6] |
16 |
TIO4 |
I/O |
TargetIO Pin 4 - usually trigger input. |
17 |
GND |
O |
System ground. |
18 |
+3.3V |
O |
+3.3V to Target Device [2] |
19 |
GND |
O |
System ground. |
20 |
+5V (VUSB) |
O |
+5V to Target Device [1] |