Sony Ericsson GR47 Integrator's Manual page 55

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The method of connection is shown below.
Note!
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:
LZT 123 7589 R2B
KEYBOARD INTERFACE
GR47
Figure 7.1 Keyboard matrix connections
Brand Part Number
Toshiba RN1107 (as shown)
On SEMI DTC114YET1
Philips PDTC114YE
ROHM DTC114YETL
1 2
4 5
RN1107
RN1107
3
6
RN1107
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