PCF8583
NXP Semiconductors
Clock and calendar with 240 x 8-bit RAM
In the different modes the counter registers are programmed and arranged as shown in
Figure 9. Counter cycles are listed in Table 4.
00h
01h
02h
control/status
control/status
hundredth of a second
D1
D3
D5
D0
D2
D4
1/10 s
1/100 s
seconds
minutes
hours
10 s
1 s
03h
04h
05h
06h
10 min
1 min
free
free
10 h
1 h
year/date
10 day
1 day
weekdays/months
free
10 month
1 month
timer
timer
07h
08h
09h
0Ah
T1
T0
10 day
1 day
alarm control
alarm control
hundredth of a second alarm
1/100 s
alarm
D1
alarm
D0
1/10 s
alarm seconds
D3
D5
D2
D4
alarm minutes
0Bh
0Ch
alarm hours
alarm date
free
free
0Dh
0Eh
0Fh
alarm month
alarm timer
free
alarm timer
free RAM
free RAM
CLOCK MODES
EVENT COUNTER
013aaa369
Fig 9. Register arrangement
PCF8583
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© NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 06 — 6 October 2010
8 of 37
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