User Manual

CONFIDENTIAL

- Timing Sequence

Timing Sequence for Mode selection Pin (P20, P24) under APP mode

Pin No. I/O Name Description

4 I BAT_IN 3.3V power input

7 P VDD_IO

Main power supply

17 I P20

System configuration, refer to P2_4, MCU do NOT drive under APP Mode

18 I P24

Boot mode selection (MCU NOT drive under APP Mode)

P2_0/ P2_4: HH Æ Application

LL Æ Boot mode

LH Æ HCI UART mode for testing and system configuration.

P20

P24

VDDIO

Power

7.28ms 41.1ms

P20, P24 Mode Selection Timing Diagram