MM58167中文资料Microprocessor Real Time Clock数据手册TI规格书

描述 Description

General Description
The MM58167B is a low threshold metal gate CMOS circuit that functions as a real time clock in bus oriented microproc essor systems. The device includes an addressable real time counter, 56 bits of RAM, and two interrupt outputs. A POWER DOWN input allows the chip to be disabled from the rest of the system for standby low power operation. The time base is a 32.768 kHz crystal oscillator.

特性 Features

■ Microprocessor compatible (8-bit data bus)
■ Milliseconds through month counters
■ 56 bits of RAM with comparator to compare the real time counter to the RAM data
■ 2 INTERRUPT OUTPUTS with 8 possible interrupt signals
■ POWER DOWN input that disables all inputs and outputs except for one of the interrupts
■ Status bit to indicate rollover during a read
■ 32.768 kHz crystal oscillator
■ Four-year calendar (no leap year)
■ 24-hour clock