Integrator's Manual GR47/GR48

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
KEYCOL#KEYROW#
4
321
RN1107
RN1107
RN1107
5
GR47
Brand Part Number
Toshiba RN1107 (as shown)
On SEMI DTC114YET1
Philips PDTC114YE
ROHM DTC114YETL