Product Summary

The ICM7170AIPG is a kind of 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 device generates two types of interrupts, periodic and alarm. An ALE (Address Latch Enable) input is provided for interfacing to microprocessors with a multiplexed address/data bus. With these two special features, the ICM7170 can be easily interfaced to any available microprocessor. It is intended for Portable and Personal Computers, Data Logging, Industrial Control Systems and Point Of Sale.

Parametrics

Absolute maximum ratings: (1)Supply Voltage: +8.0V; (2)Power Dissipation: 500mW; (3)Storage Temperature Range: -65 to 150℃; (4)Lead Temperature (Soldering 10s): 300℃; (5)Input Voltage (Any Terminal): VDD +0.3V to VSS -0.3V.

Features

Features: (1)8-Bit, mP Bus Compatible: Multiplexed or Direct Addressing; (2)Regulated Oscillator Supply Ensures Frequency Stability and Low Power; (3)Time From 1/100 Seconds to 99 Years; (4)Software Selectable 12/24 Hour Format; (5)Latched Time Data Ensures No Roll Over During Read; (6)Full Calendar with Automatic Leap Year Correction; (7)On-Chip Battery Backup Switchover Circuit; (8)Access Time Less than 300ns; (9)4 Programmable Crystal Oscillator Frequencies Over Industrial Temperature Range; (10)3 Programmable Crystal Oscillator Frequencies Over Military Temperature Range; (11)On-Chip Alarm Comparator and RAM; (12)Interrupts from Alarm and 6 Selectable Periodic Intervals; (13)Standby Micro-Power Operation: 1.2mA Typical at 3.0V and 32kHz Crystal.

Diagrams

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