UPD75112 Datasheet, PDF (37/56 Pages) NEC – 4-Bit Single Chip-Microcomputer

10. Mask Option Selection
The following mask options are available for the 5
µPD75116(A).
Whether or not they should be incorporated can be
selected.
(1) Pins
Pin
P120 to P123
P130 to P133
P140 to P143
Mask Option
Bit-wise pull-up resistor incorporation enable
(2) Power-on reset circuit and power-on flag (PONF)
One of the following three settings can be selected.
Mask Option Specification
Power-on
Reset Circuit
Incorporated
Not incorporated
Not incorporated
Power-on Flag
(PONF)
Incorporated
Incorporated
Not incorporated
Switch Selection
(See Figure 8-1)
SWA
SWB
ON
ON
ON
OFF
OFF
OFF
µPD75112(A), 75116(A)
Internal Reset Signal
(RES)
Generated automatically
Not generated automatically
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