Philips Semiconductors
Product specification
Clock/calendar with 240 × 8-bit RAM
PCF8583
MSB
7
LSB
0
handbook, full pagewidth
memory location 08
reset state: 0000 0000
6
5
4
3
2
1
timer function :
000
001
010
011
100
101
110
111
no timer
hundredths of a second
seconds
minutes
hours
days
not used
test mode, all counters
in parallel (factory use only)
timer interrupt enable :
0
1
timer flag, no interrupt
timer flag, interrupt
clock alarm function :
00
01
10
11
no clock alarm
daily alarm
weekday alarm
dated alarm
timer alarm enable :
0
1
no timer alarm
timer alarm
alarm interrupt enable :
MRB005
(valid only when 'alarm enable' in
control / status register is set
0
1
alarm flag, no interrupt
alarm flag, interrupt
Fig.8 Alarm control register; clock mode.
1997 Jul 15
10
NXP [ NXP ]
