EM785830AA
8-bit Micro-controller
I. General Description
The EM785830AA is an 8-bit RISC type microprocessor with low power, high speed CMOS technology. There
are 16Kx13 bits ROM within it.
This integrated single chip has an on_chip watchdog timer (WDT, data RAM, programmable real time
clock/counter, internal interrupt, power down mode, 4-channel 10-bit A/D converter, two channel PWM output, SPI 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
3
14.3M
3.6
Operating Voltage(min)
2.2
2.5
‧ 16k x 13 on chip Program Memory
‧ 0.5k x 8 on chip data RAM
‧ Up to 21 bi-directional tri-state I/O ports(4 shared with AD input; 1 shared with external interrupt input )
‧ 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
‧ Four 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
Turn on
Normal mode Turn on
‧ 7 level Normal mode frequency : 447.8K , 895.7K , 1.79M , 3.58M , 7.16M , 10.75M and 14.3MHz.
‧ Input port interrupt function
‧ 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
· 4 channel 10-bit successive approximation A/D converter
· Internal (VDD) or external reference
POR
· Power-on voltage detector reset
PACKAGE
EM78P5830AM, EM78P5830AAM, EM785830AAM Æ 28 pin SOP
EM78P5830AP, EM78P5830AAP, EM785830AAP Æ 28 pin PDIP
III. Application
General products
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* This specification is subject to be changed without notice.
2
12/1/2004 V1.6
ELAN [ ELAN MICROELECTRONICS CORP ]
