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   EM78P153S is an 8-bit microprocessor with low-power and high-speed CMOS technology. It is equipped with a 1024 x 13-bits Electrical One Time Programmable Read Only Memory (OTP-ROM) within it. It provides a PROTECTION bit to prevent intrusion of user’s code in the OTP memory as well as 15 OPTION bits to match user’s requirements. With its OTP-ROM feature, the EM78P153S offers users a convenient way of developing and verifying their programs. Moreover, user developed code can be easily programmed with the ELAN writer.

  • 14-lead packages : EM78P153S
  • Operating voltage range : 2.3V~5.5V
  • Available in temperature range: 0°C~70°C
  • Operating frequency range (base on 2 clocks):
    * Crystal mode: DC~20MHz at 5V, DC~8MHz at 3V, DC~4MHz at 2.3V.
    * ERC mode: DC~4MHz at 5V, DC~4MHz at 3V, DC~4MHz at 2.3V.
  • Low power consumption:
    * less then 1.5 mA at 5V/4MHz
    * typical of 15 µA, at 3V/32KHz
    * typical of 1µA, during the sleep mode
  • 1024 x 13 bits on chip ROM
  • Built-in calibrated IRC oscillators (8MHz, 4MHz, 1MHz, 455KHz )
  • Programmable prescaler of oscillator set-up time
  • One security register to prevent the code in the OTP memory from intruding
  • One configuration register to match the user’s requirements
  • 32× 8 bits on chip registers (SRAM, general purpose register)
  • 2 bi-directional I/O ports
  • 5 level stacks for subroutine nesting
  • 8-bit real time clock/counter (TCC) with selective signal sources and trigger edges,
  • and with overflow interrupt
  • Power down mode (SLEEP mode)
  • Three available interruptions
    * TCC overflow interrupt
    * Input-port status changed interrupt (wake up from the sleep mode)
    * External interrupt
  • Programmable free running watchdog timer
  • 7 programmable pull-high I/O pins
  • 7 programmable open-drain I/O pins
  • 6 programmable pull-down I/O pins
  • Two clocks per instruction cycle
  • Package type: 14 pins SOP, DIP
    * 14 pin DIP 300mil: EM78P153SP
    * 14 pin SOP 150mil: EM78P153SN
  • The transient point of system frequency between HXT and LXT is around 400KHz
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