User's Manual
Table Of Contents
- General description
- Interfaces
- General Purpose Connector (GPC)
- Power supply
- Electrical information for digital I/O
- LCD interface
- SPI Auxiliary bus
- Keyboard interface
- Main serial link (UART1)
- Auxiliary serial link (UART2)
- SIM interface
- General Purpose Input/Output
- Activity status indication
- Analog to Digital Converter (ADC)
- Audio interface
- Battery charging interface
- ON / ~OFF
- BOOT (optional)
- Reset signal (~RST)
- External Interrupt (~INTR)
- VCC output
- Real Time Clock Supply (VCC_RTC)
- RF interface
- Technical specifications
- Appendix
WM_PRJ_Q2400_PTS_002 - 004
March 5, 2004
2.15 ON / ~OFF
2.15.1 General description
This input is used to switch ON or OFF the WISMO module.
A high level signal has to be provided on the pin ON/~OFF to switch ON the module.
The level of the voltage of this signal has to be maintained between 2.4 V and VDD during a
minimum of 1 s.
This signal can be left at high level until switch OFF.
To be able to switch OFF the module, the pin ON/~OFF has to be released. Through the firmware,
the module can be switched OFF (using the AT+CPOF command).
Pin description
Signal Pin number I/O I/O type Description
ON/∼OFF
6 I CMOS Module Power ON/OFF
Electrical Characteristics
Parameter Min Max Unit
Input Impedance ( R ) 10
kΩ
Input Impedance ( C ) 50 pF
Operating conditions
Parameter I/O type Min Max Unit
V
IL
0 V 0.6 V V
V
IH
2.4 V VDD+0.5 V V
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