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PCF8583U

Clock/calendar with 240×8-bit RAM

Philips Electronics 

Philips Semiconductors

Clock/calendar with 240 × 8-bit RAM

Product specification

PCF8583

handbook, full pagewidth

MSB

7 654

MRB005

LSB

321 0

memory location 08

reset state: 0000 0000

timer function :

000 no timer

001 hundredths of a second

010 seconds

011 minutes

100 hours

101 days

110 not used

111 test mode, all counters

in parallel (factory use only)

timer interrupt enable :

0

timer flag, no interrupt

1

timer flag, interrupt

clock alarm function :

00 no clock alarm

01 daily alarm

10 weekday alarm

11 dated alarm

timer alarm enable :

0

no timer alarm

1

timer alarm

alarm interrupt enable :

(valid only when 'alarm enable' in

control / status register is set

0

alarm flag, no interrupt

1

alarm flag, interrupt

Fig.8 Alarm control register; clock mode.

1997 Jul 15

10

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