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EM78P447S

EM78P447S

EM78P447S is an 8-bit microprocessor with low-power and high-speed CMOS technology. It is equipped with 4K x 13-bits Electrical One Time Programmable Read Only Memory (OTP-ROM). It provides a PROTECTION bit to prevent user’s code in the OTP memory from being intruded. Seven OPTION bits are also available to meet user’s requirements. With its OTP-ROM feature, the EM78P447S 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.
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EM78P447S is an 8-bit microprocessor with low-power and high-speed CMOS technology. It is equipped with 4K x 13-bits Electrical One Time Programmable Read Only Memory (OTP-ROM). It provides a PROTECTION bit to prevent user’s code in the OTP memory from being intruded. Seven OPTION bits are also available to meet user’s requirements. With its OTP-ROM feature, the EM78P447S 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.
Features
  • Operating voltage range: 2.3V~5.5V.
  • Operating temperature range: -40°C~85°C.
  • Operating frequency range( base on 2 clocks)
    * Crystal mode: DC~20MHz at 5V, DC~8MHz at 3V, DC~4MHz at 2.3V.
    * RC mode: DC~4MHz at 5V, DC~4MHz at 3V, DC~4MHz at 2.3V.
  • Low power consumption:
    * Less then 2.2 mA at 5V/4MHz
    * Typically 30 µA, at 3V/32KHz
    * Typically 1 µA, during sleep mode
  • 4K x 13 bits on chip ROM
  • One security register to prevent intrusion of OTP memory codes
  • One configuration register to accommodate user’s requirements
  • 148× 8 bits on chip registers(SRAM, general purpose register)
  • 3 bi-directional I/O ports
  • 5 level stacks for subroutine nesting
  • 8-bit real time clock/counter (TCC) with selective signal sources, trigger edges, and
  • overflow interrupt
  • Two clocks per instruction cycle
  • Power down (SLEEP) mode
  • Two available interruptions
    * TCC overflow interrupt
    * External interrupt
  • Programmable free running watchdog timer
  • 10 programmable pull-high pins
  • 2 programmable open-drain pins
  • 2 programmable R-option pins
  • Package types:
    * 20 pin DIP 300 mil : EM78P447SDP
    * 20 pin SOP 300 mil : EM78P447SDM
    * 24 pin Skinny DIP 300 mil : EM78P447SCK
    * 24 pin SOP 300 mil : EM78P447SCM
    * 28 pin DIP 600 mil : EM78P447SAP
    * 28 pin Skinny DIP 300 mil : EM78P447SAK
    * 28 pin SOP (SOIC) 300 mil : EM78P447SAM
    * 28 pin SSOP 209 mil : EM78P447SAS
    * 32 pin DIP 600 mil : EM78P447SBP
    * 32 pin SOP (SOIC) 450 mil : EM78P447SBWM
  • 99.9% single instruction cycle commands
  • The transient point of system frequency between HXT and LXT is around 400KHz
      芯片资料下载:
     EM78P447S芯片手册

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