參數(shù)資料
型號: PCF8583
廠商: NXP SEMICONDUCTORS
元件分類: XO, clock
英文描述: Clock/calendar with 240×8-bit RAM(帶240×8位RAM的時鐘/日歷)
中文描述: REAL TIME CLOCK
文件頁數(shù): 6/28頁
文件大?。?/td> 162K
代理商: PCF8583
1997 Jul 15
6
Philips Semiconductors
Product specification
Clock/calendar with 240
×
8-bit RAM
PCF8583
Fig.3 Control/status register.
handbook, full pagewidth
memory location 00
reset state: 0000 0000
timer flag
(50% duty factor
seconds flag if alarm
enable bit is 0)
alarm flag
(50% duty factor
minutes flag if alarm
enable bit is 0)
alarm enable bit:
0 alarm disabled: flags toggle
alarm control register disabled
(memory locations 08 to 0F
are free RAM space)
1 enable alarm control register
(memory location 08 is the
alarm control register)
mask flag:
0 read locations 05 to 06
unmasked
1 read date and month count
directly
function mode :
00 clock mode 32.768 kHz
01 clock mode 50 Hz
10 event-counter mode
11 test modes
hold last count flag :
0 count
1 store and hold last count in
capture latches
stop counting flag :
0 count pulses
1 stop counting, reset divider
7
6
5
4
3
2
1
0
MSB
LSB
MRB017
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參數(shù)描述
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