µPD6121, 6122
The higher 8 bits of the custom code are determined by the diode connected to the CCS pin and KI/O pin.
Set custom code
Higher 8 bits of custom code
10001010
C0 C1 C2 C3 C4 C5 C6 C7
Set to “1” by diode
The inversion/non-inversion of the lower 8 bits of the custom code’ is determined by the pull-up resistor
connected to the KI/O pin.
Set custom code
Lower 8 bits of custom code’
10001000
C0’ C1’ C2’ C3’ C4’ C5’ C6’ C7’
Set to “1” by pull-up resistor,
that is, bit for non-inversion of custom code is set
1: Non-inversion for C0 to C7
0: Inversion for C0 to C7
When the above-described setting is done, the following custom code is output.
Custom code
Higher 8 bits of custom code
10001010
C0 C1 C2 C3 C4 C5 C6 C7
Lower 8 bits of custom code’
11111101
C0’ C1’ C2’ C3’ C4’ C5’ C6’ C7’
C0 C1 C2 C3 C4 C5 C6 C7
Remark Codes are transmitted from the LSB.
7