EM78569数据手册Elan中文资料规格书

描述 Description

The EM78569 is an 8-bit RISC type microprocessor with low power, high speed CMOS technology. This integrated single chip has an on_chip watchdog timer (WDT), program 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), 10-bit A/D converter, 10-bit DA converter and tri-state I/O.

特性 Features

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 17.9MHz.
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