µPD78P4038Y is a one-time PROM or EPROM version of the µPD784035Y, µPD784036Y, µPD784037Y, and µPD784038Y with internal masked ROM. Since user programs can be written to PROM, this microcontroller is best suited for evaluation in system development, manufacture of small quantities of multiple products, and fast start-up of applications.
The NEC uPD78P4038Y is a one-time programmable (OTP) or EPROM version of the standard #PD784035Y through uPD784038Y series. It features an internal 128 Kbyte PROM that can be changed to 48, 64, or 96 Kbytes via software, making it suitable for system evaluation and small quantity manufacturing.
| Internal PROM Size | 128 Kbytes (changeable to 48, 64, or 96 Kbytes) |
|---|---|
| Internal RAM Size | 4,352 bytes (changeable to 2,048 or 3,584 bytes) |
| Supply Voltage | 2.7 to 5.5 V |
| Number of Basic Instructions | 113 mnemonics |
| Minimum Instruction Execution Time | 125 ns/250 ns/500 ns/1,000 ns (at 32 MHz) |
| A/D Converter Resolution | 8-bit resolution x 8 channels |
Yes, the 128 Kbyte PROM can be changed to 48, 64, or 96 Kbytes using the Internal Memory Switching (IMS) register.
No, the EPROM versions are restricted to functional evaluation and trial manufacture due to reliability limitations.