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Specification

Overview

  • General Description

    The EM78P302N is an 8-bit microprocessor designed and developed with low-power and high-speed CMOS technology. The device has an on-chip 1.25k x 13-bit Electrical One Time Programmable Read Only Memory (OTP-ROM). It provides a protection bit to prevent intrusion of user’s OTP memory code. Three Code Option words are also available to meet user’s requirements.

  • Features & Benefits

    • CPU Configuration

      • 1.25K x 13 bits on-chip ROM
      • 80 bytes on-chip registers (SRAM)
      • 8-level stacks for subroutine nesting
      • 3 programmable level voltage reset (LVR): 4.0V, 3.5V, 2.7V
      • Less than 1.5 mA at 5V/4MHz
      • Typically 15 μA at 3V/32kHz
      • Typically 2 μA during Sleep mode

    • I/O Port Configuration

      • 3 bidirectional I/O ports: P5, P6, P7
      • 12 I/O pins
      • Wake-up port: P5, P70, P71
      • 8 programmable pull-down I/O pins
      • 10 programmable pull-high I/O pins
      • 2 programmable open-drain I/O pins
      • 8 programmable high-sink current I/O pins
      • 8 programmable high-drive current I/O pins
      • External interrupt: P60

    • Operating Voltage and Temperature Range

      • 2.1V~5.5V at 0°C~70°C (Commercial Grade)
      • 2.3V~5.5V at -40°C~85°C (Industrial Grade)

    • Operating Frequency Range

      • Crystal Mode: DC~16MHz/2clks@3V; DC~8MHz/2clks@2.5V; DC~4MHz/2clks@2.1V
      • IRC Mode: 1MHz, 4MHz, 8MHz, 16MHz ±1%@25°C, 5V

    • Fast set-up time requires only 0.8ms (VDD: 5V Crystal: 4 MHz, C1/C2: 15pF) in XT mode and 10µs in IRC mode (VDD: 5V, IRC: 4 MHz)

    • Peripheral Configuration

      • 8-bit real time clock/counter (TCC) with selective signal sources, trigger edges, and overflow interrupt
      • 8-channel Analog-to-Digital Converter with 12-bit resolution in Vref (2/3/4V) mode
      • Two Pulse Width Modulation (PWM) with 8-bit resolution

    • Nine Available Interrupts

      • TCC overflow interrupt
      • Input-port status changed interrupt (wake-up from sleep mode)
      • External interrupt
      • ADC completion interrupt
      • PWM 1~2 period match interrupt
      • PWM 1~2 duty match interrupt

    • Special Features

      • Programmable free running watchdog timer (4.5ms, 18 ms)
      • Power down mode (Sleep mode)
      • Selectable oscillation mode
      • Power-on voltage detector available (1.9V±0.2V)
      • High EFT immunity (better performance at 4 MHz or below)

  • Data Sheet

  • Package

  • Technical Information

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