Wavecom G2 Dokumentacja Pobierz pdf (Strona 54)

Wireless CPU

Q24 Series

Interfaces

©Confidential Page: 53 / 83

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prior written agreement.

WM_PRJ_Q24NG_PTS_001-004

January 16, 2007

3.15 ON / ~OFF

3.15.1 General Description

This input is used to power ON or OFF the Wireless CPU

To power-ON, a high level signal must be provided on the ON/~OFF pin of the

Wireless CPU

To power-OFF, the ON/~OFF signal must be set to low and the AT command

“AT+CPOF” must be sent to the Wireless CPU

Equivalent circuit

Pin description

Signal Pin

I/O

I/O type

Description

ON/∼OFF

6 I CMOS Power ON/OFF

Electrical characteristics

Parameters Min

Max

Unit

VIL 0 0.6 V

VIH 2.4

5 V

Warning:

All external signals must be inactive when the Wireless CPU

is OFF to avoid any

damage when starting and allow the Wireless CPU

to start and stop correctly.

GND

ON/∼OFF

47K

100K

47K

VDD

Q24 Series

1 2 ... 49 50 51 52 53 54 55 56 57 58 59 ... 84 85

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Wavecom G2 Dokumentacja Strona 54