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EM78P159NP

8-Bit Microcontroller with OTP ROM

ELAN Microelectronics 

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

•1

(This specification is subject to change without further notice)

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