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參數(shù)資料
| 型號： | STK17CA8-W45I |
| 元件分類： | 時鐘/數(shù)據(jù)恢復及定時提取 |
| 英文描述： | REAL TIME CLOCK, PDIP40 |
| 封裝： | 0.600 INCH, DIP-40 |
| 文件頁數(shù)： | 11/22頁 |
| 文件大?。?/td> | 579K |
| 代理商： | STK17CA8-W45I |
STK17CA8
June 2003
19
Document Control # ML0023 rev 0.2
WDT
Watchdog timeout selection. The watchdog timer interval is selected by the 6-bit value in this register. It represents a multiplier of the 32 Hz
count (31.25 ms). The minimum range or timeout value is 31.25 ms (a setting of 1) and the maximum timeout is 2 seconds (setting of 3Fh).
Setting the watchdog timer register to 0 disables the timer. These bits can be written only if the WDW bit was cleared to 0 on a previous
cycle.
1FFF6h
Interrupt Status/Control
D7
D6
D5
D4
D3
D2
D1
D0
WIE
AIE
PFE
ABE
H/L
P/L
XX
WIE
Watchdog Interrupt Enable. When set to 1 and a watchdog timeout occurs, the watchdog timer drives the INT pin as well as the WDF flag.
When set to 0, the watchdog timeout affects only the WDF flag.
AIE
Alarm Interrup Enable. When set to 1, the alarm match drives the INT pin as well as the AF flag. When set to 0, the alarm match only
affects the AF flag.
PFE
Power-Fail Enable. When set to 1, the alarm match drives the INT pin as well as the AF flag. When set to 0, the power-fail monitor affects
only the PF flag.
ABE
Alarm Battery-backup Enable. When set to 1, the alarm interrupt (as controlled by AIE) will function even in battery backup mode. When
set to 0, the alarm will occur only when Vcc>Vswitch.
H/L
High/Low. When set to a 1, the INT pin is driven active high. When set to 0, the INT pin is open drain, active low.
P/L
Pulse/Level. When set to a 1, the INT pin is driven active (determined by H/L) by an interrupt source for approximately 200 ms. When set
to a 0, the INT pin is driven to an active level (as set by H/L) until the Flags/Control register is read.
1FFF5h
Alarm - Day
D7
D6
D5
D4
D3
D2
D1
D0
M
0
10s alarm date
alarm date
Contains the alarm value for the date of the month and the mask bit to select or deselect the date value.
M
Match. Setting this bit to 0 causes the date value to be used in the alarm match. Setting this bit to 1 causes the match circuit to ignore the
date value.
1FFF4h
Alarm - Hours
D7
D6
D5
D4
D3
D2
D1
D0
M
0
10s alarm hours
alarm hours
Contains the alarm value for the hours and the mask bit to select or deselect the hours value.
M
Match. Setting this bit to 0 causes the hours value to be used in the alarm match. Setting this bit to 1 causes the match circuit to ignore the
hours value.
1FFF3h
Alarm - Minutes
D7
D6
D5
D4
D3
D2
D1
D0
M
10s alarm minutes
alarm minutes
Contains the alarm value for the minutes and the mask bit to select or deselect the minutes value
M
Match. Setting this bit to 0 causes the minutes value to be used in the alarm match. Setting this bit to 1 causes the match circuit to ignore
the minutes value.
1FFF2h
Alarm - Seconds
D7
D6
D5
D4
D3
D2
D1
D0
M
10s alarm seconds
alarm seconds
Contains the alarm value for the seconds and the mask bit to select or deselect the seconds value
1FFF7h
Watchdog Timer
D7
D6
D5
D4
D3
D2
D1
D0
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| STK17T88-RF25 | 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 存儲容量:1024 Kbit 組織:128 K x 8 接口類型:Parallel 訪問時間: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-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 存儲容量:1024 Kbit 組織:128 K x 8 接口類型:Parallel 訪問時間: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 存儲容量:1024 Kbit 組織:128 K x 8 接口類型:Parallel 訪問時間: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 存儲容量:1024 Kbit 組織:128 K x 8 接口類型:Parallel 訪問時間: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 存儲容量:1024 Kbit 組織:128 K x 8 接口類型:Parallel 訪問時間: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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