EM78P156EL is an 8-bit microprocessor designed and developed with low-power and high-speed CMOS technology. It is equipped with 1K*13-bits Electrical One Time Programmable Read Only Memory (OTP-ROM). It provides a PROTECTION bit to prevent user’s code in the OTP memory from being intruded. 6 OPTION bits are also available to meet user’s requirements. With its OTP-ROM feature, the EM78P156EL is able to offer a convenient way of developing and verifying user’s programs. Moreover, user can take advantage of EMC Writer to easily program his development code.
The EM78P156EL is an 8‑bit microprocessor built with low‑power, high‑speed CMOS technology. It integrates a 1K × 13‑bit one‑time programmable ROM, 48 × 8‑bit registers, and a range of configurable I/O and interrupt features.
Key features include a wide operating voltage (2.3 V–5.5 V), temperature range (0 °C–70 °C), multiple package options (DIP, SOP, SSOP), and low power consumption modes for battery‑powered applications.
| Operating voltage range | 2.3 V ~ 5.5 V |
|---|---|
| Operating temperature range | 0 °C ~ 70 °C |
| OTP ROM size | 1 K × 13 bits |
| I/O ports | 2 bi‑directional I/O ports |
| Typical power consumption (5 V, 4 MHz) | < 1.6 mA |
| Package options | 18‑pin DIP, 18‑pin SOP, 20‑pin SSOP |
The device provides a 1 K × 13‑bit one‑time programmable ROM on chip.
The microcontroller operates from 2.3 V up to 5.5 V.