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ICM7227 Datasheet PDF

Intersil
Part Number ICM7227
Manufacturer Intersil
Title (ICM7217 / ICM7227) 4-Digit CMOS Up/Down Counter / Display Driver
Description www.DataSheet4U.com DataSheet4U.com DataShee DataSheet4U.com DataSheet 4 U .com www.DataSheet4U.com et4U.com DataSheet4U.com DataShee Dat...
Features taSheet4U.com DataSheet 4 U .com www.DataSheet4U.com et4U.com DataSheet4U.com DataShee DataSheet4U.com DataSheet 4 U .com www.DataSheet4U.com et4U.com DataSheet4U.com DataShee DataSheet4U.com DataSheet 4 U .com www.DataSheet4U.com et4U.com DataSheet4U.com DataShee DataSheet4U.com ...

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ICM7101D : Pin No 1 2 3 4 5 Symbol AGND VDD VDDI GND TXO Description Analog Ground Supply Voltage Ground Supply Input Voltage Power for the chip is extracted from this pin Transmit Output Transmit output to be connected to external power transistor for the modulation of line voltage and for shorting the line during make period of pulse dialing. Line Voltage Line Loss Compensation 0V = No LLC; AGND=Low LLC; VDD=High LLC. Flash Option FOPT0=0 - 100ms FOPT0=1 - 600ms DTMF Level Option MFL0=0 - Low DTMF (~ -8/-10dB for ZAC=600ohm) MFL0=1 - High DTMF (~ -6/-8dB for ZAC=600ohm) Hook Switch Input and Dial Pulse Output When off-hook, this pin is pulled high by the hook switch. During pulse dialing, this pin .

ICM7170 : The ICM7170 real time clock is a microprocessor bus compatible peripheral, fabricated using Intersil’s silicon gate CMOS LSl process. An 8-bit bidirectional bus is used for the data I/O circuitry. The clock is set or read by accessing the 8 internal separately addressable and programmable counters from 1/100 seconds to years. The counters are controlled by a pulse train divided down from a crystal oscillator circuit, and the frequency of the crystal is selectable with the onchip command register. An extremely stable oscillator frequency is achieved through the use of an on-chip regulated power supply. The device access time (tACC) of 300ns eliminates the need for wait states or software over.

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