Sony Ericsson GR47/GR48 - Manual (Page 53)

7. KEYBOARD INTERFACE
53
LZT 123 7589 R1A
The method of connection is shown below.
Figure 7.1 Keyboard matrix connections
1RWH
This matrix pattern may be repeated up to 5 columns and 4 rows (one
column will use a ground connection as a virtual column driver).
Examples of suitable transistors are:
6
KEYC
OL#
KEYR
OW#
4
3 2 1
RN1107
RN1107
RN1107
5
GR47
Brand Part Number
Toshiba RN1107 (as shown)
On SEMI DTC114YET1
Philips PDTC114YE
ROHM DTC114YETL