UPD75P238 Datasheet (NEC) - 4-BIT SINGLE CHIP MICROCOMPUTER

UPD75P238, 4-BIT SINGLE CHIP MICROCOMPUTER

The µPD75P238 is a version of the µPD75238 in which the on-chip mask ROM is replaced by one-time PROM or EPROM.

The one-time PROM version can be written to once only, and is useful for short-run and multiple deviceproduction of sets and early start-up.

Also, the EPROM version allows programs to be w

UPD75P238 Features

* o µPD75238 pin compatible o On-chip PROM: 32640 × 8 o On-chip RAM: 1024 × 4 o High-voltage display outputs . S0 to S8 & T0 to T9 : Internal pull-down resistors . S9, S16 to S23 & T10 to T15: Open-drain o Drive capability in same supply voltage range as mask version µPD75238 (2.7 to 6.0 V) o Ports 4