Sony Ericsson GR47/GR48 Manuale Utente
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).
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