Q2686 Wavecom, Q2686 Datasheet - Page 35

• Manufacturer Part Number: Q2686
• Description: Wireless CPU
• Manufacturer: Wavecom

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3.5 Keyboard Interface
This interface provides 10 connections:
The scanning is a digital one and debouncing is performed in the Q2686
Wireless CPU
No discrete components such as Rs, Cs (Resistors, Capacitors) are needed.
See Chapter 3.3, “Electrical information for digital I/O” for Open drain, 2V8 and 1V8 voltage
characteristics and for Reset state definition.
This document is the sole and exclusive property of WAVECOM. Not to be distributed or divulged without
prior written agreement.
WM_PRJ_Q2686_PTS_001-007
ROW0
ROW1
ROW2
ROW3
ROW4
Signal
COL0
COL1
COL2
COL3
COL4
•
•
5 rows (ROW0 to ROW4) and
5 columns (COL0 to COL4).
number
®
.
Pin
68
67
66
65
64
59
60
61
62
63
confidential ©
Keyboard interface pin description
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
type
1V8
1V8
1V8
1V8
1V8
1V8
1V8
1V8
1V8
1V8
I/O
Pull-up
Pull-up
Pull-up
Pull-up
Pull-up
Reset
state
0
0
0
0
0
Row scan
Row scan
Row scan
Row scan
Row scan
Column scan
Column scan
Column scan
Column scan
Column scan
Description
Q2686 Wireless CPU
Multiplexed
GPIO10
GPIO11
GPIO12
GPIO13
GPIO9
GPIO4
GPIO5
GPIO6
GPIO7
GPIO8
with
Interfaces
March 6, 2007
Page: 34 / 87
®