EM78P257 - ELAN Microelectronics

EM78P257 8-BIT MICROCONTROLLER

EM78P257A/B is an 8-bit microprocessors with low-power, high speed CMOS technology. It features a 2K*13 bits Electrical One Time Programmable Read Only Memory (OTP -ROM) and provides a protect bit to prevent from intruding on code, as well as 12 Option bits to accommodate user’s requirements. This specification is subject to change without prior notice. 3 .

Features

a 2K
*13 bits Electrical One Time Programmable Read Only Memory (OTP -ROM) and provides a protect bit to prevent from intruding on code, as well as 12 Option bits to accommodate user’s requirements. This specification is subject to change without prior notice. 3 07.27.2004 (V1.4) EM78P257 OTP ROM 2. FEATURES
• Operating voltage range: 2.3V~5.5V
• Operating temperature range: 0°C~70°C
• Operating frequency range: (Base on 2 clocks)
* Crystal mode: DC ~ 20MHz/2clks,5V; DC ~ 8MHz/2clks,3V
* RC mode: DC ~ 4MHz/2clks,5V; DC ~ 4MHz/2clks,3V
• Low power consumption:
* less then 1.5 mA at 5V/4MHz .