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ELAN Microelectronics Corp - 8 -BIT MICRO-CONTROLLER

Numéro de référence EM78P860
Description 8 -BIT MICRO-CONTROLLER
Fabricant ELAN Microelectronics Corp 
Logo ELAN Microelectronics Corp 





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EM78P860 fiche technique
EM78P860
8 -BIT MICRO-CONTROLLER
I. GENERAL DESCRIPTION
The EM78P860 is an 8-bit RISC type microprocessor with low power , high speed CMOS technology .
Integrated onto a single chip are on_chip watchdog (WDT) , RAM , ROM , programmable real time clock /counter ,
internal interrupt , power down mode , LCD driver and tri-state I/O . The EM78P860 provides a single chip solution
to design a message display .
II. FEATURES
CPU
• Operating voltage range : 2.5V~5.5V
• 16Kx13 on chip ROM
• 2.8Kx8 on chip RAM
• Up to 32 bi-directional tri-state I/O ports
• 8 Level stack for subroutine nesting
• 8-bit real time clock/counter (TCC)
• Two sets of 8 bit counters can be interrupt sources
• Selective signal sources and with overflow interrupt
• Programmable free running on chip watchdog timer
• 99.9% single instruction cycle commands
• Four modes (internal clock 3.679MHz, external 32.768KHz)
1. Sleep mode : CPU and 3.679MHz clock turn off, 32.768KHz clock turn off
2. Idle mode : CPU and 3.679MHz clock turn off, 32.768KHz clock turn on
3. Green mode : 3.679MHz clock turn off, CPU and 32.768KHz clock turn on
4. Normal mode : 3.679MHz clock turn on , CPU and 32.768KHz clock turn on
• Low battery detector
• Input port wake up function
• 8 interrupt source , 4 external , 3 internal
100 pin QFP (EM78860AQ, POVD disable) (EM78860BQ, POVD enable) or chip (EM78860H)
• Port key scan function
• Port interrupt , pull high and open drain functions
• Clock frequency 32.768KHz externally
LCD
• LCD operation voltage chosen by software
• Common driver pins : 16
• Segment driver pins : 60
• 1/4 bias
• 1/8,1/16 duty
III. APPLICATION
1. adjunct units
* This specification is subject to be changed without notice.
4.17.2000 1

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