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   Product Introduction

The EM78F734N is an 8-bit microprocessor designed and developed with low-power, high-speed CMOS technology and high noise immunity. It has an on-chip 4Kx13-bit Electrical Flash Memory and 128?8-bit In-system programmable EEPROM. It provides three protection bits to prevent intrusion of user’s Flash memory code.

With its enhanced Flash-ROM feature, the EM78F734N provides a convenient way of developing and verifying user’s programs. Moreover, this Flash-ROM device offers the advantages of easy and effective program updates, using development and programming tools. Users can avail of the ELAN Writer to easily program their development codes.

   Product Features

? CPU Configuration

? 4K?13 bits Flash memory

? 144?8 bits on-chip registers (SRAM)

? 128 bytes In-system programmable EEPROM

? 8-level stacks for subroutine nesting

? I/O Port Configuration

? Three bidirectional I/O ports

? Wake-up port : P6

? 12 Programmable pull-down I/O pins

? 8 programmable pull-high I/O pins

? 4 programmable open-drain I/O pins

? External interrupt : P60

? Operating Voltage Range:

? 2.2V~5.5V @ – 40°C ~85°C (Industrial)

? 2.2V~5.5V @ 0°C ~70°C (Commercial)

? Operating frequency range (base on two clocks):

? IRC Drift Rate (Vdd @ 3.3V)

? 6 available interrupts: (2 external, 4 internal)

? Eight channels Analog-to-Digital Converter with 12-bit resolution

? Peripheral Configuration

? 8-bit real Timer Clock/Counter (TCC) with selective signal sources, trigger edges, and overflow interrupt

? Power down (Sleep) mode

? Four programmable Level Voltage Reset (LVR)

(LVR) : 3.3V, 3.0V, 2.6V, and 2.0V (POR)

? Three security registers to prevent intrusion of Flash memory codes

? One configuration register to accommodate user’s requirements

? Two clocks per instruction cycle

? High EFT immunity

? Two sub-frequencies; 128kHz and 16kHz, the 16kHz is provided by dividing the 128kHz

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