Epson Toyocom Q42724211000200 RTC-72421B Real Time Clock DIL18

Real time clock module, YY-MM-DD date format, HH:MM:SS time format, parallel interface, RTC features: battery backup power, 1MHz clock frequency, 50ppm frequency precision, 4.5V to 5.5V supply voltage, -10 to +70°C, 18-DIP case, the Epson Toyocom RTC-72421B and RTC-72423B modules are 4-bit parallel interface real time clocks that can be connected directly to a microprocessor bus, these devices feature a built-in crystal unit that enables highly accurate timekeeping with adjustment-free operation and reduced costs due to removing the need for connection to external components.

Supply Voltage	4.5 to 5.5V
Package Style	18-DIP
Clock Frequency	1MHz
Date Format	YY-MM-DD
Frequency Precision	50ppm
Height	4.2mm
Interface Type	Parallel
Length	23.1mm
Operating Temperature Range	-10 to +70°C
RTC Features	Battery Backup Power
Time Format	HH:MM:SS
Width	6.3mm