em78p5842 ELAN Microelectronics Corp, em78p5842 Datasheet - Page 4

• Manufacturer Part Number: em78p5842
• Description: 8-bit Micro-controller
• Manufacturer: ELAN Microelectronics Corp

I. General Description
are 4Kx13 bits ROM within it. This integrated single chip has an on_chip watchdog timer (WDT), RAM, programmable
real time clock/counter, internal interrupt, power down mode, dual PWM (Pulse Width Modulation), 8-channel 10-bit
A/D converter and tri-state I/O.
II. Feature
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* This specification is subject to change without notice.
CPU
Operating frequency mode
PWM
ADC
POR
PACKAGE
The EM785840 series are 8-bit RISC type microprocessor with low power, high speed CMOS technology. There
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¡E 4k x 13 on chip mask ROM
¡E 144 x 8 on chip general propose RAM
¡E Up to 21 bi-directional and 1 input only general purpose I/O (For 24 pin package)
¡E 8 level stack for subroutine nesting
¡E 8-bit real time clock/counter (TCC)
¡E One 8-bit counter interrupt
¡E On-chip watchdog timer (WDT)
¡E 99.9¢ H single instruction cycle commands
¡E Four action modes in Crystal mode (Main clock can be programmed to 3.58M or 14.3M Hz)
¡E 2 level Normal mode frequency: 3.58M and 14.3MHz.
¡E Input port interrupt function
¡E Dual clocks operation (Internal PLL main clock , External 32.768KHz)
¡E Crystal mode (XIN,XOUT pin connect external crystal and capacitance)
¡E ERIC mode (ERCI pin connect resister to VDD)
¡E IRC mode
¡E Dual PWM (Pulse Width Modulation) with 10-bit resolution
¡E Programmable period (or baud rate)
¡E Programmable duty cycle
Operating voltage : 2.2V~5.5V at main CLK less then 3.58MHz.
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Operating : 2.5V¡ ã 5.5V
8 channel 10-bit successive approximation A/D converter
Internal (VDD) reference voltage
Power-on reset
EM785840M Æ 18 pin SOP, EM785841M Æ 20 pin SOP, EM785842M Æ 24 pin SOP
EM785840P Æ 18 pin PDIP, EM785841P Æ 20 pin PDIP, EM785842P Æ 24 pin PDIP
Operating Voltage(min)
Operating Voltage(min)
Mode
Sleep mode
Green mode
Normal mode
Main CLK(Hz)
Converter Rate
CPU status
Turn off
Turn on
Turn on
Under 3.58M
74.6K
3.5V
2.2V
Main clock
Turn off
Turn off
Turn on
37.4K
3.0V
14.3M
3.6V
32.768kHz clock status
Turn off
Turn on
Turn on
2
18.7K
2.5V
9.3K
2.5V
EM785840/5841/5842
8-bit Micro-controller
2004/11/10 V1.2