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
2.3 Electrical information for digital I/O
All digital I/O comply with 3 Volts CMOS.
Operating conditions
Parameter I/O type Min Max Condition
V
IL
CMOS -0.5 V 0.8 V
V
IH
CMOS 2.1 V 3.0 V
V
OL
1X 0.2 V I
OL
= -1 mA
2X 0.2 V I
OL
= -2 mA
3X 0.2 V I
OL
= -3 mA
V
OH
1X 2.6 V I
OH
= 1 mA
2X 2.6 V I
OH
= 2 mA
3X 2.6 V I
OH
= 3 mA
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