em78p811 ELAN Microelectronics Corp, em78p811 Datasheet - Page 2

• Manufacturer Part Number: em78p811
• Description: 8-bit Micro-controller
• Manufacturer: ELAN Microelectronics Corp

I.General Description
technology . There are 16Kx13 bits Electrical One Time Programmable Read Only Memory (OTP-ROM) within it. It
provides Security bits and some One time programmable Option bits to protect the OTP memory code from any external
access as well as to meet user’s options.
time clock /counter , internal interrupt , power down mode , LCD driver , FSK decoder , DTMF generator and tri-state
I/O . The EM78P811 provides a single chip solution to design a CID of calling message_display .
II.Feature
CPU
•Operating voltage range : 2.5V∼5.5V
•16K×13 Electrical One Time Programmable Read Only Memory (OTP-ROM)
•2.8K×8 on chip RAM
•Up to 32 bi-directional tri-state I/O ports
•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)
•Ring on voltage detector and low battery detector
•Input port wake up function
•8 interrupt source , 4 external , 4 internal
•100 pin QFP or chip
• Port key scan function
• Port interrupt , pull high and open drain functions
•Clock frequency 32.768KHz
CID
•Operation Volltage 3.5 ∼5.5V for FSK
•Operation Volltage 2.5 ∼5.5V for DTMF
•Bell 202 , V.23 FSK demodulator
•DTMF generator
•Ring detector on chip
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
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* This specification is subject to be changed without notice.
The EM78P811 is an 8-bit CID (Call Identification) RISC type microprocessor with low power , high speed CMOS
The EM78P811 is Integrated onto a single chip are on_chip watchdog (WDT) , RAM , ROM , programmable real
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
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
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8-bit OTP Micro-controller
EM78P811