007D4FL3 Search Results

Contextual Info: DATA SHEET NEC / MOS INTEGRATED CIRCUIT / / P D 4 9 9 A SERIAL I/O CALENDAR & CLOCK C M O S LSI The ¿¿PD4990A is a CMOS LSI developed to inp u t/ou tp u t calendar & clock data serially to /fro m the micro com­ puter. The crystal frequency is 32.768 kHz and the data items included are time, minute, second, year, month, day,