Key facts
- Brand
- ELAN
- Model
- EM78P458
- Documents
- 2
- Languages
- EN · ZH
- Last added
- 2012-03-21
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ELAN EM78P458/459 OTP ROM Datasheet
This document describes the ELAN EM78P458 and EM78P459 8‑bit microcontrollers with an integrated 4K×13‑bit OTP ROM. It lists electrical characteristics, operating ranges, package options, and the internal register set.
The datasheet includes pin‑assignment tables, functional block diagrams, and detailed information on the CPU core, timers, ADC, PWM, watchdog, and power‑down features, useful for hardware designers and firmware developers.
ELAN EM78P458 specifications
| Operating voltage range | 2.3 V ~ 5.5 V |
|---|---|
| Operating temperature range (commercial) | 0 °C ~ 70 °C |
| Operating temperature range (industrial) | -40 °C ~ 85 °C |
| Power consumption at 5 V/4 MHz | < 1.5 mA |
| On‑chip OTP ROM size | 4 K × 13 bits |
| On‑chip SRAM registers | 84 × 8 bits |
| Number of bi‑directional I/O ports | 2 |
| Package pin count (EM78P458AP) | 20 pins |
| Reset pulse width (25 °C) | 2000 ns |
All ELAN EM78P458 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the operating voltage range of the EM78P458/459?
The device operates from 2.3 V up to 5.5 V.
How many pins does the EM78P458AP package have?
The EM78P458AP comes in a 20‑pin DIP package.
What is the operating voltage range of the EM78P458/459?
The device operates from 2.3 V up to 5.5 V.
What package types are available for the EM78P458/459?
It is offered in 20‑pin DIP (EM78P458AP), 20‑pin SOP (EM78P458AM), 24‑pin skinny DIP (EM78P459AK) and 24‑pin SOP (EM78P459AM).