User Manual

Advanc
e
Information
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2015 Microchip Technology Inc.
page
17
BM78SPPS5MC2 , RN4678
Note:
C. *1: this time by iPhone LE mode disconnect time.
D. SW_BTN pull low can’t active on Shutdown State.
E. Reset is floating.
6.0 WAKE UP
The Wake Up input pin wakes the BM78 from shutdown mode (active low).
Figures 6‐1 : WAKE_UP Time at Shutdown State.
7.0 EXTERNAL RESET
A watchdog timer capable of reset the chip. It has an integrated Power-On Reset (POR)
circuit that resets all circuits to a known power-on state. This action can also be driven by an
external reset signal that can be used to externally control the device, forcing it into a power-on
reset state. The RST signal input is active low and no connection is required in most applications.
Figures 7 ‐1 : Reset Time at Shutdown State.