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EM78811

Features: • Operating voltage range : 2.5V~5.5V• 16K X13 on chip ROM• 2.8K X 8 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. : 004336060 Detail

EM78811: Features: • Operating voltage range : 2.5V~5.5V• 16K X13 on chip ROM• 2.8K X 8 on chip RAM• Up to 32 bi-directional tri-state I/O ports• 8 level stack for subroutine ne...

EM78811 Data Sheet

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Part Number:
EM78811
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:

• Operating voltage range : 2.5V~5.5V
• 16K X13 on chip ROM
• 2.8K X 8 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 trigger edges , and with overflow interrupt
• Programmable free running on chip watchdog timer
• 99.9% single instruction cycle commands
• Three modes (internal clock 3.679MHz)
   1. sleep mode : CPU and 3.679MHz clock turn off, 32.768KHz clock turn off
   2. Idle mode : CPU and 3.679 MHz 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
• Ring on voltage detector and low battery detector
• Input port wake up function
• 8 interrupt source , 4 external , 4 internal
• 100 QFP or chip
• Port key scan function
• Port interrupt, Pull high and Open drain functions
• Clock frequency 32.768KHz
• Main clock can switch to 1.84MHz by code option


Application

1. adjunct units
2. answering machines
3. feature phones


Pinout

Connection Diagram


Specifications

Items
SYMBOL
VALUE
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 EM78811 is an 8-bit CID (Call Identification) 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 , FSK decoder , DTMF generator and tri-state I/O . The EM78811 provides a single chip solution to design a CID of calling message_display .




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