RTC-72423 - Epson Company

RTC-72423 Real time clock module(4-bit REAL TIME CLOCK MODULE)

Real time clock module 4-bit REAL TIME CLOCK MODULE RTC-72421/ 72423 • • • • • • Built-in crystal unit allows adjustment-free efficient operation. ALE input terminal available for 8048, 8051, and 8085 series. 12/24 h clock switchover function and automatic leap year setting. Interrupt masking. 30 second adjustment function. Low current consumption and featu.

Features

a backup function. Actual size Specifications (characteristics) Absolute Max. rating Symbol Item VDD Power source voltage VI/O Input and output voltage Storage temperature TSTG Condition Ta=+25 °C Ta=+25 °C RTC-72421 RTC-72423 RTC-72421 Soldering condition TSOL RTC-72423 Specifications -0.3 to 7.0 GND -0.3 to VDD+0.3 -55 to +85 -55 to +125 Under +260 °C within 10 s (lead part) (package should be less than +150 °C) Terminal connection Unit V °C RTC-72421 18 17 16 15 14 13 12 11 10 Twice at under +260 °C within 10 s or under +230 °C within 3 min. 1 2 3 4 5 6 7 8 9 Operating range .