參數(shù)資料
型號(hào)： STK17CA8-W45I
元件分類(lèi)： 時(shí)鐘/數(shù)據(jù)恢復(fù)及定時(shí)提取
英文描述： REAL TIME CLOCK, PDIP40
封裝： 0.600 INCH, DIP-40
文件頁(yè)數(shù)： 13/22頁(yè)
文件大?。?/td> 579K
代理商： STK17CA8-W45I
STK17CA8
June 2003
20
Document Control # ML0023 rev 0.2
M
Match. Setting this bit to 0 causes the seconds value to be used in the alarm match. Setting this bit to 1 causes the match circuit to ignore
the seconds value.
1FFF1h
Timekeeping - Centuries
D7
D6
D5
D4
D3
D2
D1
D0
X
10s Centuries
Centuries
1FFF0h
Flags
D7
D6
D5
D4
D3
D2
D1
D0
WDF
AF
PF
X
CAL
W
R
WDF
Watchdog Timer Flag. This read-only bit is set to 1 when the watchdog timer is allowed to reach 0 without being reset by the user. It is
cleared to 0 when the Flags/Control register is read.
AF
Alarm Flag. This read-only bit is set to 1 when the time and date match the values stored in the alarm registers with the match bits = 0. It is
cleared when the Flags/Control register is read.
PF
Power-fail Flag. This read-only bit is set to 1 when power falls below the power-fail threshold Vswitch. It is cleared to 0 when the Flags/Con-
trol register is read.
CAL
Calibration Mode. When set to 1, the clock enters calibration mode. When set to 0, the clock operates normally.
W
Write Time. Setting the W bit to 1 freezes updates of the timekeeping registers. The user can then write them with updated values. Setting
the W bit to 0 causes the contents of the time registers to be transferred to the timekeeping counters.
R
Read Time. Setting the R bit to 1 copies a static image of the timekeeping registers and places them in a holding register. The user can
then read them without concerns over changing values causing system errors. The R bit going from 0 to 1 causes the timekeeping capture,
so the bit must be returned to 0 prior to reading again.
1FFF2h
Alarm - Seconds
D7
D6
D5
D4
D3
D2
D1
D0
相關(guān)PDF資料
PDF描述
STK17T88-RF45TR PROGRAMMABLE TIMER, PDSO48
STK17T88-RF45 PROGRAMMABLE TIMER, PDSO48
STK17T88-RF25ITR PROGRAMMABLE TIMER, PDSO48
STK17TA8-R25I REAL TIME CLOCK, PDSO48
STK17TA8-R35 REAL TIME CLOCK, PDSO48
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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STK17T88-RF25I 功能描述:NVRAM 32Kbx8+RTC 2.7-3.6V RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)總線寬度:8 bit 存儲(chǔ)容量:1024 Kbit 組織:128 K x 8 接口類(lèi)型:Parallel 訪問(wèn)時(shí)間:70 ns 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 工作電流:85 mA 最大工作溫度:+ 70 C 最小工作溫度:0 C 封裝 / 箱體:EDIP 封裝:Tube
STK17T88-RF25ITR 功能描述:NVRAM 32Kbx8+RTC 2.7-3.6V RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)總線寬度:8 bit 存儲(chǔ)容量:1024 Kbit 組織:128 K x 8 接口類(lèi)型:Parallel 訪問(wèn)時(shí)間:70 ns 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 工作電流:85 mA 最大工作溫度:+ 70 C 最小工作溫度:0 C 封裝 / 箱體:EDIP 封裝:Tube
STK17T88-RF25TR 功能描述:NVRAM 32Kbx8+RTC 2.7-3.6V RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)總線寬度:8 bit 存儲(chǔ)容量:1024 Kbit 組織:128 K x 8 接口類(lèi)型:Parallel 訪問(wèn)時(shí)間:70 ns 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 工作電流:85 mA 最大工作溫度:+ 70 C 最小工作溫度:0 C 封裝 / 箱體:EDIP 封裝:Tube
STK17T88-RF45 功能描述:NVRAM 32Kbx8+RTC 2.7-3.6V RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)總線寬度:8 bit 存儲(chǔ)容量:1024 Kbit 組織:128 K x 8 接口類(lèi)型:Parallel 訪問(wèn)時(shí)間:70 ns 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 工作電流:85 mA 最大工作溫度:+ 70 C 最小工作溫度:0 C 封裝 / 箱體:EDIP 封裝:Tube
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