User's Guide

12
I2C_SDA
32
2.6
I2C Interface
SPI_SDI
3
Serial port control data input
SPI_SDO
5
2.6
Serial port control data output
SPI_CS#
6
2.6
Serial port control Chip Select
SPI_SCLK
7
2.6
Serial Port Bit Clock
3. Electrical Characteristics and Safety Information
3.1. Absolute Maximum Ratings
Absolute maximum rating for power supply and voltage on I/O pins of DWM-800A are list in table1 as
follows.
Table 3-1 Absolute maximum ratings
Symbol
Description
Min
Max
Units
VIO
Voltage on any input or output pin
-0.5
VPAD*+0.5
V
VBAT
POWER SUPPLY
3.3
3.9
V
*VPAD=1.8V
3.2. Power-Up and Power-Down Sequence
DWM-800A is Auto Power On when VBAT is ready. The system would be turned on. The pmic(MT6327) power on
sequence is as below: