General Description
The EM78P569 is an 8-bit RISC type microprocessor with low power, high speed CMOS technology. There are 16Kx13 bits Electrical One Time Programmable Read Only Memory (OTP-ROM) within it. It provides security bits and some One time programmable Option bits to protect the OTP memory code from any external access as well as to meet user’s options.
This integrated single chip has an on_chip watchdog timer (WDT), program OTP-ROM, data RAM, LCD driver, programmable real time clock/counter, internal interrupt, power down mode, built-in three-wire SPI, dual PWM(Pulse Width Modulation), 6-channel 10-bit A/D converter, 10-bit D/A converter and tri-state I/O.

Feature
CPU
• Operating voltage : 2.2V~5.5V at main CLK less then 3.58MHz.
• 16k x 13 on chip Electrical One Time Programmable Read Only Memory (OTP-ROM)
• 1k x 8 on chip data RAM
• Up to 51 bi-directional tri-state I/O ports
• 16 level stack for subroutine nesting
• 8-bit real time clock/counter (TCC)
• two 8-bit counters : COUNTER1 and COUNTER2
• On-chip watchdog timer (WDT)
• 99.9％ single instruction cycle commands
• 8 level Normal mode frequency : 447.8K , 895.7K , 1.79M , 3.58M , 7.16M , 10.75M , 14.3M and 17.9M Hz.
• Input port interrupt function
• 12 interrupt source, 4 external, 8 internal
• Dual clocks operation (Internal PLL main clock , External 32.768KHz)
• 8x8 accumulated multiplication-addition multiplier with sign and address auto-increment function

SPI
• Serial Peripheral Interface (SPI) : a kind of serial I/O interface
• Interrupt flag available for the read buffer full,
• Programmable baud rates of communication
• Three-wire synchronous communication. (shared with IO)

PWM
• Dual PWM (Pulse Width Modulation) with 10-bit resolution
• Programmable period (or baud rate)
• Programmable duty cycle

ADC
• Operating : 2.5V∼ 5.5V
• 6-channel 10-bit successive approximation A/D converter
• Internal (VDD) or external reference

DAC
• Operating : 2.5V∼ 5.5V under VDD reference, 2.8V ~ 5.5V under 2.5V reference
• 10-bit R-2R D/A converter
• Internal (VDD or 2.5V) reference

POR
• 2.0V Power-on reset

LCD
• Common driver pins : 4
• Segment driver pins : 32
• 1/3 bias
• 1/4 duty, 1/2 duty
• 16 Level LCD contrast control by software

Multiplier
• 8 x 8 multiplier

PACKAGE
• 100-pin QFP
  73-pin die

Application
    Communication or general product.