Product Introduction

The EM78P153B is an 8-bit microprocessor designed and developed with low-power and high-speed CMOS technology. The device has an on-chip 102413-bit Electrical One Time Programmable Read Only Memory (OTP-ROM). It provides three protection bits to prevent intrusion of user’s OTP memory code. Fifteen code option bits are also available to meet user’s special requirements.

With enhanced OTP-ROM features, the EM78P153B provides a convenient method of developing and verifying user’s programs. Moreover, this OTP device offers easy and effective program updates with the use of development and programming tools. You can avail of ELAN’s Writer to easily program your development codes.

   Product Features

 CPU Configuration

 1k  13 bits on-chip ROM

 32  8 bits on-chip registers (SRAM, general purpose)

 5-level stacks for subroutine nesting

 Less than 1.5 mA at 5V / 4 MHz

 Typically 15 µA at 3V / 32kHz

 Typically 1 µA during Sleep mode

 I/O Port Configuration

 2 bidirectional I/O ports : P5, P6

 12 I/O pins

 Wake-up port : P6

 6 Programmable pull-down I/O pins

 7 programmable pull-high I/O pins

 7 programmable open-drain I/O pins

 External interrupt : P60

 Operating Voltage Range:

 2.3V ~ 5.5V at 0 ~ 70C (Commercial Grade)

 Operating Frequency Range (Base on 2 clocks):

 Crystal Mode:

DC ~ 20 MHz / 2clks @ 5V

DC ~ 8 MHz / 2clks @ 3V

DC ~ 4 MHz / 2clks @ 2.3V

The transient point of system frequency

between HXT and LXT is 400kHz.

 ERC Mode:

DC ~ 2MHz / 2clks @ 2.1V

 IRC Mode:

Oscillation Mode: 4 / 8 / 1MHz and 455kHz

Process Deviation: Type: Max. ± 3 PERCENT

Temperature Deviation: ± 2% (0 ~ 70°C)

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