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參數(shù)資料
| 型號： | 933728070118 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 時鐘/數(shù)據(jù)恢復(fù)及定時提取 |
| 英文描述： | REAL TIME CLOCK, PDSO16 |
| 封裝： | 7.50 MM, PLASTIC, MS-013, SOT-162-1, SO-16 |
| 文件頁數(shù)： | 3/28頁 |
| 文件大?。?/td> | 136K |
| 代理商： | 933728070118 |
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2003 Jan 27
11
Philips Semiconductors
Product specication
Clock/calendar with serial I/O
PCF8573
Table 3
MODE-POINTER-word, CONTROL-nibble (bits 8, 7, 6 and 5)
Note
1. If the seconds counter is below 30 there is no carry. This causes a time adjustment of max.
30 s. From the count
30 there is a carry which adjusts the time by max.
+30 s.
Table 4
MODE-POINTER-word, ADDRESS-nibble (bits 4, 3, 2 and 1)
At the end of each data word the address bits B1, B0 will be incremented automatically provided the preceding
CONTROL-nibble is set to EXECUTE ADDRESS. There is no carry to B2.
Table 5 shows the placement of the BCD upper and lower digits in the DATA byte for writing into the addressed part of
the time counter and alarm register respectively.
Table 6 shows the acknowledgement response of the clock calendar as a slave receiver.
Table 5
Placement of BCD digits in the DATA byte; note 1
Note
1. ‘X’ is the don’t care bit; ‘D’ is the data bit.
BIT 8
C2
C1
C0
FUNCTION
0000
execute address
0001
read control/status ags
0010
reset prescaler, including seconds counter; without carry for minute counter
0011
time adjust, with carry for minute counter (note 1)
0100
reset NODA ag
0101
set NODA ag
0110
reset COMP ag
BIT 4
B2
B1
B0
ADDRESSED TO:
0000
time counter hours
0001
time counter minutes
0010
time counter days
0011
time counter months
0100
alarm register hours
0101
alarm register minutes
0110
alarm register days
0111
alarm register months
MSB
DATA
LSB
ADDRESSED TO:
UPPER DIGIT
LOWER DIGIT
UD
UC
UB
UA
LD
LC
LB
LA
X
DDDDDD
hours
X
DDDDDDD
minutes
X
DDDDDD
days
X
D
months
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