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UPD75P238 Datasheet 4-bit Single Chip Microcomputer

Manufacturer: NEC (now Renesas Electronics)

Overview: DATA SHEET MOS INTEGRATED CIRCUIT µPD75P238 4-BIT SINGLE CHIP.

General Description

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 written and rewritten, and is thus ideal for system evaluation.

Key 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 & 5: No pull-up resistor o Port 7: No pull-down resistor Note USE VCR, Audio-visual, ECR, Microwave oven No internal pull-up and pull-down resistor function by mask option.

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UPD75P238 Distributor