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參數(shù)資料
| 型號： | PCF8573 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | XO, clock |
| 英文描述： | Clock/calendar with Power Fail Detector |
| 中文描述： | REAL TIME CLOCK |
| 文件頁數(shù)： | 11/24頁 |
| 文件大小： | 198K |
| 代理商： | PCF8573 |
1997 Mar 28
11
Philips Semiconductors
Product specification
Clock/calendar with Power Fail Detector
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
0
0
0
0
0
0
0
0
0
0
0
1
1
1
0
0
1
1
0
0
1
0
1
0
1
0
1
0
execute address
read control/status flags
reset prescaler, including seconds counter; without carry for minute counter
time adjust, with carry for minute counter (note 1)
reset NODA flag
set NODA flag
reset COMP flag
BIT 4
B2
B1
B0
ADDRESSED TO:
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
time counter hours
time counter minutes
time counter days
time counter months
alarm register hours
alarm register minutes
alarm register days
alarm register months
MSB
DATA
LSB
UPPER DIGIT
LOWER DIGIT
UD
UC
UB
UA
LD
LC
LB
LA
ADDRESSED TO:
X
X
X
X
X
D
X
X
D
D
D
X
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
hours
minutes
days
months
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PCF8573P | Clock/calendar with Power Fail Detector |
| PCF8573T | Clock/calendar with Power Fail Detector |
| PCF8574 | Remote 8-bit I/O expander for I2C-bus |
| PCF8578 | LCD row/column driver for dot matrix graphic displays |
| PCF8578H | LCD row/column driver for dot matrix graphic displays |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCF8573P | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Clock/calendar with Power Fail Detector |
| PCF8573PN | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Real-Time Clock |
| PCF8573T | 制造商: 功能描述: 制造商:undefined 功能描述: 制造商:NXP Semiconductors 功能描述:Real Time Clock, 16 Pin, Plastic, SOP |
| PCF8573TD | 制造商:NXP Semiconductors 功能描述:Real Time Clock, 16 Pin, Plastic, SOP |
| PCF8573TD-T | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Real-Time Clock |
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