Siemens C55 Repair Documentation

V1.20 Page 44 of 48 ICM MP CCQ GRM
A55/C55_Hitachi Company Confidential © Copyright Siemens AG 04/03
7.6 SIM
Pin Name IN/OUT Remarks
3 CCLK O Pulse for chipcard.
The chipcard is controlled directly from the
EGOLD+.
2 CCRST O Reset for chipcard
I 7 CCIO
O
Data pin for chipcard;
10 kΩ pull up at the CCVCC pin
1 CCVCC - Switchable power supply for chipcard;
220 nF capacitors are situated close to the
chipcard pins and are necessary for buffering
current spikes.
7.7 Display
Pin Name Remarks
1 2.9V Power supply display controller
2 LCD_CLK Clock
3 LCD_DAT Data line
4 LCD_RS Register select
5 LCD_CS Chip select
6 GND GND
7 VLCD Power supply display
8 LCD_RESET Reset

Siemens C55 Specifications

General

Brand	Siemens
Model	C55
Category	Cell Phone
Language	English