Specifications

© 2020 LeapFive Inc.
Confidential
Page 7
Serial number
Pin name
Description of the function
9
GND
GND
10
IO_00
SDIO, SFLASH, SPI, I2C, UART, PWM, GPIO
11
IO_08
SPI, I2C, UART, PWM, AUXADC, GPIO
12
IO_01
SDIO, SFLASH, SPI, I2C, UART, PWM, GPIO
13
IO_03
SDIO, SPI, I2C, UART, PWM, GPIO
14
IO_04
SDIO, SPI, I2C, UART, PWM, GPIO
15
IO_07
SPI, I2C, UART, PWM, AUXADC, GPIO
16
IO_16
SPI, I2C, UART, PWM, GPIO
Note: IO08 port needs to be pulled up when downloading burning, not when using it.
2. Electrical parameters
2.1 working conditions
The LF-WM03 module recommends working parameters as shown in Table 3.
Table 3 recommends working conditions
Parameter
Name
Minimum
Typical
value
Maximum
Unit
Store the temperature
/
–40 °C
25℃
125 °C
/
Operating temperature
/
–20 °C
25℃
85 °C
/
Supply voltage
VDD
2.5
3.3
3.6
V
In-logic low level
V IL
–0.3
/
0.25 VDD
V
In-logic high level
V IH
0.75 VDD
/
VDD + 0.3
V
Output logic low level
V OL
/
/
0.1 VDD
V
Output logic high level
V OH
0.8 VDD
/
/
V
The maximum rating for electrostatic protection for the LF-WM03 module is shown in Table 4,
and exceeding the maximum rating can cause permanent damage to the hardware.
Table 4 Maximum rating for electrostatic protection
Parameter
Minimum
Maximum
Unit
ESD Protection
(HBM)
/
2000
V