User Guide

PAMS
System Module DB6
NHB–3
Technical Documentation
Original 26/97
Page 4–8
Pin/Con Symbol Notes
10/UIF UIF5 • Keyboard row read. LCD driver register select
• min/max 0 /0.7 V Output/Input low
• min/max 4.5 /4.8 V Output/Input high
11/UIF UIF6 • Enable strobe for LCD driver
• min/max 0 /0.7 V Output/Input low
• min/max 4.5 /4.8 V Output/Input high
12/UIF MIC ENA • min/max 0 /0.7 V Output low,
microphone bias on
• Floating, microphone off
13–16/ COL(0:3) • Keyboard columns
UIF • min/max 0 /0.7 V Output low
• min/max 4.5 /4.8 V Output high
17/UIF CALL LED • min/max 0 /0.7 V Output low, call led off
• min/typ/max 4.5/ 4.65/ 4.8 V Output high,
call led on
22/UIF BUZZER • PWM output from MCU
• min/max 0 /0.7 V Output low, buzzer off
• min/typ/max 4.5/ 4.65/ 4.8 V Output high,
buzzer on
23/UIF XPWRON • min/typ/max 0 /0 /0.7 V Input low,
power on/off
• typ 4.65 V Floating when inactive.
A pull–up in PSL+
25/UIF UIMCLK • Clock for UIM card
• min/typ/max 3.6 /4.65 /4.8 V State ”1”
• min/typ/max 0 /0.2 /0.7 V State ”0”
• min/max 1 MHz /5 MHz UIM card
clock frequency
26/UIF UIMRESET • Reset for UIM card
• min/typ/max 4.5/ 4.65/ 4.8 V Output high
• min/max 0 /0.7 V Output low
27/UIF VUIM • min/typ/max 4.5/ 4.65/ 4.8 V UIM card reader
supply voltage
• max 10 mA UIM card supply current at
any frequency
• max 100 µA UIM card supply current in
idle state at 1 MHz and 25°C
28/UIF UIMDATA • Data for UIM card In/Out
• min/typ/max 3.6 /4.65 /4.8 V State ”1”
• min/typ/max 0 /0.2 /0.7 V State ”0”