參數(shù)資料
型號(hào)： STK17TA8-W25
元件分類： 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, 0.100 INCH PITCH, PLASTIC, DIP-40
文件頁(yè)數(shù)： 14/25頁(yè)
文件大?。?/td> 285K
代理商： STK17TA8-W25
STK17TA8
April 2005
Document Control #ML0025 rev 1.1
21
Calibration / Control
0x1FFF8
D7
D6
D5
D4
D3
D2
D1
D0
OSCEN
0
Calibration
Sign
Calibration
OSCEN
Oscillator Enable. When set to 1, the oscillator is halted. When set to 0, the oscillator runs.
Disabling the oscillator saves battery/capacitor power during storage. On a no-battery power-up,
this bit is set to 0.
Calibration
Sign
Determines if the calibration adjustment is applied as an addition to or as a subtraction from the
time-base.
Calibration
These five bits control the calibration of the clock.
Watchdog Timer
0x1FFF7
D7
D6
D5
D4
D3
D2
D1
D0
WDS
WDW
WDT
WDS
Watchdog Strobe. Setting this bit to 1 reloads and restarts the watchdog timer. Setting the bit to 0
has no affect. The bit is cleared automatically once the watchdog timer is reset. The WDS bit is
write only. Reading it always will return a 0.
WDW
Watchdog Write Enable. Setting this bit to 1 masks the watchdog time-out value (WDT5-WDT0) so
it cannot be written. This allows the user to strobe the watchdog without disturbing the time-out
value. Setting this bit to 0 allows bits 5-0 to be written on the next write to the Watchdog register.
The new value will be loaded on the next internal watchdog clock after the write cycle is complete.
This function is explained in more detail in the watchdog timer section.
WDT
Watchdog time-out 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 time-out
value is 31.25 ms (a setting of 1) and the maximum time-out 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.
Interrupt Status / Control
0x1FFF6
D7
D6
D5
D4
D3
D2
D1
D0
WIE
AIE
PFIE
ABE
H/L
P/L
0
WIE
Watchdog Interrupt Enable. When set to 1 and a watchdog time-out occurs, the watchdog timer
drives the INT pin as well as the WDF flag. When set to 0, the watchdog time-out affects only the
WDF flag.
AIE
Alarm Interrupt 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.
PFIE
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.
相關(guān)PDF資料
PDF描述
STK17TA8-R45 REAL TIME CLOCK, PDSO48
STK17TA8-R25 REAL TIME CLOCK, PDSO48
STK17TA8RF25I REAL TIME CLOCK, PDSO48
STLED316SMTR 4 X 17 SEGMENTS SEGMENT LED DRVR AND DSPL CTLR, PDSO24
STM32F101C8T6 32-BIT, FLASH, 36 MHz, RISC MICROCONTROLLER, PQFP48
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
STK190-110 制造商:Panasonic Industrial Company 功能描述:IC
STK2 制造商:Eaton Corporation 功能描述:Seltronic And Series C 310 Tes 制造商:Eaton Corporation 功能描述:Seltronic And Series C 310 Test Kit
ST-K2 制造商:SYNERGY 制造商全稱:SYNERGY MICROWAVE CORPORATION 功能描述:TRRANSSFFORRMEERRS
STK2025 制造商:未知廠家 制造商全稱:未知廠家 功能描述:OUTPUT STAGE OF AF POWER AMP
STK2029 制造商:未知廠家 制造商全稱:未知廠家 功能描述:OUTPUT STAGE OF AF POWER AMP
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*