Product Summary

The MC146818P is a type of real-time clock plus RAM, which is a peripheral device. It includes the unique MOTEL concept for use with various microprocessors, and large computers. This part combines three unique features: a complete time-of-day clock with alarm and one hundred year calendar. The MC146818P has two distinct uses. First, it is designed as a battery back-up functions such as RAM, time, and calendar. Secondly, it may be used with a CMOS microprocessor to relieve the software of the timekeeping workload and to extend the available RAM of an MPU.

Parametrics

MC146818P maximum ratings: (1)Supply voltage: -0.3 to +8.0V; (2)All input voltage: VSS-0.5 to VDD+0.5V; (3)Operating temperature: 0 to 70℃; (4)Storage temperature: -55 to +150℃.

Features

MC146818P features: (1)Low-power, High-speed, High-density CMOS; (2)Internal Time base and oscillator; (3)Counts seconds, minutes, and hours of the day; (4)Counts days of the week, date, month, and year; (5)3V to 6V operation; (6)40 to 200μW typical operating power at low frequency time base; (7)Binary or BCD representation of time, calendar, and alarm.

Diagrams

MC146818P block diagram

MC14000UB
MC14000UB

Other


Data Sheet

Negotiable 
MC14001B
MC14001B

Other


Data Sheet

Negotiable 
MC14001BCP
MC14001BCP

ON Semiconductor

IC GATE NOR QUAD CMOS 14DIP

Data Sheet

1-2150: $0.13
MC14001BCPG
MC14001BCPG

ON Semiconductor

Gates (AND / NAND / OR / NOR) 3-18V Quad 2-Input NOR

Data Sheet

0-1: $0.30
1-25: $0.25
25-100: $0.18
100-500: $0.15
MC14001BDG
MC14001BDG

ON Semiconductor

Gates (AND / NAND / OR / NOR) 3-18V Quad 2-Input NOR

Data Sheet

0-1: $0.21
1-25: $0.17
25-100: $0.12
100-500: $0.10
MC14001BDR2
MC14001BDR2


IC GATE NOR QUAD CMOS 14SOIC

Data Sheet

0-1: $0.33
1-25: $0.25
25-100: $0.18
100-250: $0.14
250-500: $0.11
500-1000: $0.09