Q2406 Datasheet, PDF (18/81 Pages) List of Unclassifed Manufacturers – SELF CONTAINED E GSM/GPRS 900/1800 OR 850/1900 BI BAND MODULE

WM_PRJ_Q2400_PTS_002 - 002
24th January 2003
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
Q24x6 Series. No discrete components like R,C (Resistor, Capacitor) are
needed.
Pin description
Signal
ROW0
ROW1
ROW2
ROW3
ROW4
COL0
COL1
COL2
COL3
COL4
Pin number I/O
I/O type
Description
13
I/O CMOS / 1X Row scan
15
I/O CMOS / 1X Row scan
17
I/O CMOS / 1X Row scan
19
I/O CMOS / 1X Row scan
21
I/O CMOS / 1X Row scan
23
I/O CMOS / 1X Column scan
25
I/O CMOS / 1X Column scan
27
I/O CMOS / 1X Column scan
29
I/O CMOS / 1X Column scan
31
I/O CMOS / 1X Column scan
2.7 Main serial link (UART1)
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 Q24x6 series.
The 2 additional signals are Data Carrier Detect (CT109/DCD) and Ring
Indicator (CT125/RI).
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