ICM7170 Description
The ICM7170 real time clock is a microprocessor bus patible 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.
ICM7170 Key Features
- 8-Bit, µP Bus patible
- Multiplexed or Direct Addressing
- Regulated Oscillator Supply Ensures Frequency Stability and Low Power
- Time From 1/100 Seconds to 99 Years
- Software Selectable 12/24 Hour Format
- Latched Time Data Ensures No Roll Over During Read
- Full Calendar with Automatic Leap Year Correction
- On-Chip Battery Backup Switchover Circuit
- Access Time Less than 300ns
- 4 Programmable Crystal Oscillator Frequencies Over Industrial Temperature Range