JUPD4990A Search Results

uPD4990A

Abstract: PD4990A
Contextual Info: DATA SHEET NEC MOS INTEGRATED CIRCUIT juPD4990A SERIAL I/O CALENDAR & CLOCK CMOS LSI The /¿PD4990A is a CM OS LSI developed to input/output calendar & clock data serially to/from the micro computer. The crystal frequency is 32.768 kHz and the data items included are tim e, minute, second, year, month, day, and

Contextual Info: NEC //PD4990A S E R IA L I/O C A L E N D A R & C LO C K C M O S LS I DESCRIPTION The ¿xPD4990AC, ¿tPD4990AG are a CMOS LS I c h ip developed to in p u t/o u tp u t calendar c lo c k deta seri­ a lly t o /f r o m th e m icro com puter. The crystal frequency is 3 2 .7 6 8 kH z and the data item s included are a bo ut tim e , m in u te , second, year, m o n th

D1990a

Abstract: PPD4990AC
Contextual Info: DATA SHEET SEC MOS INTEGRATED CIRCUtT ELECTRON DEVICE /¿PD4990A SERIAL I/O CALENDAR & CLOCK C M O S LSI The /xPD4990A is a CM OS LSI developed to input/output calendar & clock data serially to /fro m the micro com­ puter. The crystal frequency ¡5 3 2.768 kH z and the data items included are tim e, minute, second, year, m onth, day,

D4990A

Abstract: D4990 TP4096 what is 74LS07 87AD MCOM-75X
Contextual Info: S E R I A L I/O R E A L T IM E C L O C K 1C /¿P D 4 9 9 0 A U S E R ’S M A N U A L 4 NEC Corporation tëC Corporation 198B 27 9 CHAPTER 1 INTRODUCTION The jiPD4990A is a CMOS LSI developed to input/output calendar and clock data serially to /from the