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EM78860

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 ...

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SeekIC No. : 004336061 Detail

EM78860: 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 ne...

EM78860 Data Sheet

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Part Number:
EM78860
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



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 or chip
• 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


Application

1. adjunct units
2. data bank


Pinout

Connection Diagram


Specifications

Item
Symbol
Rating
Unit
Temperature under bias
VDD
-0.3 to 6
V
Input voltage
VIN
- 0.5 to VDD+ 0.5
V
Operating temperature range
TA
0 to 70



Description

The EM78860 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 EM78860 provides a single chip solution to design a message display .




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