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      Sonix MCU  (45)
      Elan MCU  (51)
      RFоƬ  (12)
      HD EEPROM  (1)
      Metal link  (1)
      M0  (3)
      HD FLASH  (14)
      ֱR_  (2)
      FLASH  (12)

      This LSI is an 8-bit RISC type microprocessor with high speed CMOS technology and low power consumption. Integrated onto a single chip are on chip watchdog timer (WDT), Data RAM, ROM, programmable real time clock counter, internal/external interrupt, power down mode, LCD driver, infrared transmitter function, and tri-state I/O. The EM78P468L provides multi-protection bits to protect against intrusion of users code in the OTP memory and a seven option bits to accommodate users requirements. It also provides an especial 13 bits customer ID option.
      With its OTP-ROM feature, this LSI offers a convenient way of developing and verifying users programs. Moreover, user developed code can be easily programmed with the ELAN writer.


      • Operating voltage and temperature range:
        * EM78P468N:
           * Commercial:2.3V ~ 5.5 V. (at 0~+70)
           * Industrial: 2.5V ~ 5.5 V. (at -40~+85)
        * EM78P468L:
           * Commercial:2.1 V ~ 5.5 V. (at ~+70)
           * Industrial: 2.3V ~ 5.5 V. (at -40~+85)
      • Operation speed: DC ~ 10MHz clock input
      • Dual clock operation
        * High frequency oscillator can select among Crystal, RC, or PLL (phase lock loop)
        * Low frequency oscillator can select between Crystal or RC mode
      • Totally 272 bytes SRAM
        * 144 bytes general purpose register
        * 128 bytes on chip data RAM
      • 4K x 13 bits OTP - ROM (One Time Programmable - Read Only Memory)
      • Up to 28 bi-directional tri-state I/O ports
        * Typically, 12 bi-directional tri-state I/O ports
        * 16 bi-directional tri-state I/O ports shared with LCD segment output pin
      • 8-level stack for subroutine nesting
      • 8-bit real time clock/counter (TCC)
      • One infrared transmitter/PWM generator function
      • Four sets of 8 bits auto reload down-count timer can be used as interrupt sources
        * Counter 1: independent down-count timer
        * Counter 2, High Pulse Width Timer (HPWT), and Low Pulse Width Timer (LPWT) shared with IR function
      • Programmable free running on chip watchdog timer (WDT). This function can operate on Normal, Green and Idle mode
      • Operation modes:
        * Normal mode: The CPU operated on frequency of main oscillator (Fm)
        * Green mode: The CPU operated on frequency sub-oscillator (Fs) and main oscillator (Fm) stop
        * Idle mode: CPU idle, LCD display remains working
        * Sleep mode: whole chip stop working
      • Input port wake up function (PORT6, PORT8). Working on Idle and Sleep mode
      • Eight interrupt sources, three external and five internal
        * Internal interrupt source : TCC; Counter 1,2; High/Low pulse width timer.
        * External interrupt source : INT0, INT1 and Pin change wake-up (Port 6 and Port 8)
      • Packages:
        * Dice form : 59 pin
        * QFP-64 pin : EM78P468NQ (Body 14mm*20mm)
        * QFP-64 pin : EM78P468LQ (Body 14mm*20mm)
        * LQFP-64 pin : EM78P468NAQ (Body 7mm*7mm)
        * LQFP-64 pin : EM78P468LAQ (Body 7mm*7mm)
        * LQFP-44 pin : EM78P468NBQ (Body 10mm*10mm)
        * LQFP-44 pin : EM78P468LBQ (Body 10mm*10mm)
        * QFP-44 pin : EM78P468NCQ (Body 10mm*10mm)
        * QFP-44 pin : EM78P468LCQ (Body 10mm*10mm)
      • Power on voltage detector provided (2.0 0.1V) for EM78P468N
      • Power on voltage detector provided (1.7 0.1V) for EM78P468L

      LCD Circuit

      • Common driver pins: 4
      • Segment driver pins: 32
      • LCD Bias: 1/3, 1/2 bias
      • LCD Duty: 1/4, 1/3, 1/2 duty


      • Remote control for air conditioner
      • Health care
      • Home appliances

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