EM78910A

Features:

•Operating voltage range : 2.5V〜5.5V
•16K * 13 Read Only Memory
•1.1K* 8 on chip RAM
•Up to 28 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
•Four modes (Main clock 3.579MHz or 1.79MHz)
•Ring on voltage detector
• Universal Low battery detector
•Input port wake up function
•9 interrupt source , 4 external , 5 internal
•Port key scan function
•Clock frequency 32.768KHz
•Eight R-option pins


Application

1. Adjunct units
2. Answering machines
3. Feature phones


Pinout




Specifications

RATING	SYMBOL	VALUE	UNIT
DC SUPPLY VOLTAGE	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 EM78910/910A is an 8-bit CID (Call Identification) RISC type microprocessor with low power, high speed CMOS technology. This integrated single chip has on_chip watchdog (WDT), RAM, ROM, programmable real time clock/counter, internal interrupt, power down mode, FSK decoder, Call waiting decoder, SDT (Stuttered dial tone) decoder, DTMF generator, MEI (Multiple Extension Internetworking) function, RTF (Request To Flash) function and tri-state I/O. The EM78910/910A provides a single chip solution to design a CID of calling message_display.