EM785830AD
8-bit Micro-controller
I. General Description
The EM785830AD is an 8-bit RISC type microprocessor with low power, high speed CMOS technology. There
are 16Kx13 bits Memory within it. 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), 6-channel 10-bit A/D converter and tri-state I/O.
II. Feature
CPU
· Operating voltage : 2.2V~5.5V at main CLK less then 3.58MHz.
Main CLK(Hz)
Under 3.58M
7.16M
10.74M
14.3M
3.6
Operating Voltage(min)
2.2
2.5
3
‧ 16k x 13 on chip Program Memory.
‧ 0.5k x 8 on chip data RAM
‧ Up to 31 bi-directional tri-state I/O ports
‧ 12 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
‧ Three operating modes (Main clock can be programmed from 447.829k to 14.3MHz generated by internal
PLL)
Mode
Sleep mode
Green mode
CPU status
Turn off
Turn on
Main clock
Turn off
Turn off
Turn on
32.768kHz clock status
Turn off
Turn on
Normal mode Turn on
Turn on
· Input port interrupt function
· 12 interrupt source, 4 external, 8 internal
· Dual clocks operation (Internal PLL main clock , External 32.768KHz)
SPI
· Serial Peripheral Interface (SPI) : a kind of serial I/O interface
· Interrupt flag available for the read buffer full or transmitter buffer empty.
· 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
POR
· Power-on voltage detector reset
LCD
· Common driver pins : 4
· Segment driver pins : 13
· 1/3 bias
· 1/4 duty, 1/2 duty
· 16 Level LCD contrast control by software
PACKAGE
‧ EM785830ADQ, EM78P5830DQ, EM78P5830ADQ Æ 44 pin QFP
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* This specification is subject to be changed without notice.
2
12/14/2004 (V1.4)
ELAN [ ELAN MICROELECTRONICS CORP ]
