Specifications

WM_PRJ_Q2400_PTS_001 - 003
6th November 2002
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2.6 Keyboard interface
! Warning:
This interface is not FULLY available with AT commands:
An AT command allows to get the input key code (see +CMER command
description). This code has then to be processed by the application.
This interface provides 10 connections: 5 rows (R0 to R4) and 5 columns (C0
to C4).
The scanning is a digital one , and the debouncing is done in the WISMO Quik
Q2403 Series. No discrete components like R,C (Resistor, Capacitor) are
needed.
Pin description
Signal Pin number I/O I/O type Description
ROW0 13 I/O CMOS / 1X Row scan
ROW1 15 I/O CMOS / 1X Row scan
ROW2 17 I/O CMOS / 1X Row scan
ROW3 19 I/O CMOS / 1X Row scan
ROW4 21 I/O CMOS / 1X Row scan
COL0 23 I/O CMOS / 1X Column scan
COL1 25 I/O CMOS / 1X Column scan
COL2 27 I/O CMOS / 1X Column scan
COL3 29 I/O CMOS / 1X Column scan
COL4 31 I/O CMOS / 1X Column scan
2.7 Serial link
A flexible 6 wires serial interface is available complying with V24 protocol
signalling but not with V28 (electrical interface) due to a 2.8 Volts interface.
The signals are Tx data (CT103/TX), Rx data (CT104/RX), Request To Send
(CT105/RTS), Clear To Send (CT106/CTS), Data Terminal Ready (CT108-2/DTR)
and Data Set Ready (CT107/DSR).
The set of RS232 signals can be required for GSM DATA services application
and is generated by the general purpose I/O provided by the WISMO Quik
Q2403 Series. The 2 additional signals are Data Carrier Detect (CT109/DCD)
and Ring Indicator (CT125/RI).