EM78P159N
8-Bit Microcontroller with OTP ROM
1 General Description
EM78P159N is an 8-bit microprocessor designed and developed with low-power,
high-speed CMOS technology. It is equipped with 1K*13-bits Electrical One Time
Programmable Read Only Memory (OTP-ROM). It provides three PROTECTION bits
to prevent user’s code in the OTP memory from being intruded. 8 OPTION bits are also
available to meet user’s requirements.
With its OTP-ROM feature, the EM78P159N is able to offer a convenient way of
developing and verifying user’s programs. Moreover, user can take advantage of
ELAN Writer to easily program his development code.
1.1 Comparison between EM78P159N, EM78P154N, and
EM78P157N
To find out what similarities and differences are between EM78P159N EM78P154N
and EM78P157N, click the following link.
AN-001 EM78P154N/159N introduction and comparison with EM78P157N
2 Features
Operating voltage range:
• 2.1V~5.5V at 0°C~70°C
• 2.3V~5.5V at 40°C~85°C
Operating frequency range (base on 2 clocks ):
• Crystal mode: DC~20MHz at 5.0V, DC~8MHz at 3.0V, DC~4MHz at 2.1V
• ERC mode: DC~4MHz at 5.0~2.1V
• IRC mode:
4 choices of frequencies available; i.e., 8M, 4M, 1M, & 455kHz
IRC mode:
• All these four main frequencies can be trimmed by programming with four
calibrated bits in the ICE159N Simulator. OTP is auto trimmed by DWTR.
• Temperature, Voltage, and Process changes will influence the frequency drift
• Frequency deviation is only ±4.5% after auto trimming (based on Vdd=5V,
Ta=25°C)
Fast set-up time only requires about 2ms in high XTAL and 32CLKS in IRC mode
from wake up to operating mode
Product Specification (V1.0) 03.10.2006
(This specification is subject to change without further notice)
• 1
ELAN [ ELAN MICROELECTRONICS CORP ]
