Detailed Device Info
I/O Pin Assignment
Pin # |
Function |
Description |
1 |
GPIO0/P0.0/RX0/PWM0 |
GPIO line 0 (P0.0). RX, W1 input, and DATA input of serial port 0. |
2 |
GPIO1/P0.1/TX0/PWM1 |
GPIO line 1 (P0.1). TX, W1 output, and DATA output of serial port 0. REDUCED LOADING ABILITY. |
3 |
GPIO2/P0.2/INT0/PWM2 |
GPIO line 2 (P0.2). Interrupt line 0. |
4 |
GPIO3/P0.3/INT1/PWM3 |
GPIO line 3 (P0.3). Interrupt line 1. REDUCED LOADING ABILITY. |
5 |
GPIO4/P0.4/ADC0/PWM4 |
GPIO line 4 (P0.4). ADC channel 0. |
6 |
GPIO5/P0.5/ADC1/PWM5 |
GPIO line 5 (P0.5). ADC channel 1. |
7 |
GPIO6/P0.6/ADC2/PWM6 |
GPIO line 6 (P0.6). ADC channel 2. |
8 |
GPIO7/P0.7/RX1/PWM7 |
GPIO line 7 (P0.7). RX, W1 input, and DATA input of serial port 1 or RX line of the serial debug port. |
9 |
GPIO8/P1.0/TX1/PWM8 |
GPIO line 8 (P1.0). TX, W1 output, and DATA output of serial port 1 or TX line of the serial debug port. Also a square-wave output controlled by the beep. object. |
10 |
<Reserved> |
Flash memory SPI bus. Reserved for future development. Leave this pin unconnected. |
11 |
<Reserved> |
Flash memory SPI bus. Reserved for future development. Leave this pin unconnected. |
12 |
GND |
System ground. |
13 |
<Reserved> |
Flash memory SPI bus. Reserved for future development. Leave this pin unconnected. |
14 |
<Reserved> |
Flash memory SPI bus. Reserved for future development. Leave this pin unconnected. |
15 |
GPIO9/P1.1 |
GPIO line 9 (P1.1). |
16 |
HM |
|
17 |
MD |
|
18 |
SY |
|
19 |
SG |
|
20 |
SR |
|
21 |
RST |
|
22 |
LP |
Low-power mode output. When LOW, indicates that the WM2000 is in the low-power (shutdown) mode. |
23 |
VCCB |
RTC power line. For normal module operation, RTC power must be connected at all times. If there's no backup battery, tie VCCB to VCC. The backup power input draws power even when the module is active. |
24 |
VCC |
Main power input, 3.3V nominal, ±5%, max. average current consumption of 150mA. Occasional current bursts up to 500mA. |
Additional Resources
For additional information on the various hardware features of the WM2000, please see below:
- General-Purpose I/O Lines
- Wi-Fi and BLE Communications
- Analog-to-Digital Converter (ADC)
- Serial Ports
- I²C/SPI Support (SSI Channels)
- Pulse-Width modulation (PWM)
- Flash Memory and EEPROM
- Real-Time Clock (RTC) and Low-Power Mode
- Status LEDs and LED Control Lines
- External Keypad Support
- Power, Reset, and Control Lines