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参数资料
| 型号： | STK17CA8-W45I |
| 元件分类： | 时钟/数据恢复及定时提取 |
| 英文描述： | REAL TIME CLOCK, PDIP40 |
| 封装： | 0.600 INCH, DIP-40 |
| 文件页数： | 13/22页 |
| 文件大小： | 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
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相关代理商/技术参数 |
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| STK17T88-RF25 | 功能描述:NVRAM 32Kbx8+RTC 2.7-3.6V RoHS:否 制造商:Maxim Integrated 数据总线宽度:8 bit 存储容量:1024 Kbit 组织:128 K x 8 接口类型:Parallel 访问时间:70 ns 电源电压-最大:5.5 V 电源电压-最小:4.5 V 工作电流:85 mA 最大工作温度:+ 70 C 最小工作温度:0 C 封装 / 箱体:EDIP 封装:Tube |
| STK17T88-RF25I | 功能描述:NVRAM 32Kbx8+RTC 2.7-3.6V RoHS:否 制造商:Maxim Integrated 数据总线宽度:8 bit 存储容量:1024 Kbit 组织:128 K x 8 接口类型:Parallel 访问时间:70 ns 电源电压-最大:5.5 V 电源电压-最小:4.5 V 工作电流:85 mA 最大工作温度:+ 70 C 最小工作温度:0 C 封装 / 箱体:EDIP 封装:Tube |
| STK17T88-RF25ITR | 功能描述:NVRAM 32Kbx8+RTC 2.7-3.6V RoHS:否 制造商:Maxim Integrated 数据总线宽度:8 bit 存储容量:1024 Kbit 组织:128 K x 8 接口类型:Parallel 访问时间:70 ns 电源电压-最大:5.5 V 电源电压-最小:4.5 V 工作电流:85 mA 最大工作温度:+ 70 C 最小工作温度:0 C 封装 / 箱体:EDIP 封装:Tube |
| STK17T88-RF25TR | 功能描述:NVRAM 32Kbx8+RTC 2.7-3.6V RoHS:否 制造商:Maxim Integrated 数据总线宽度:8 bit 存储容量:1024 Kbit 组织:128 K x 8 接口类型:Parallel 访问时间:70 ns 电源电压-最大:5.5 V 电源电压-最小:4.5 V 工作电流:85 mA 最大工作温度:+ 70 C 最小工作温度:0 C 封装 / 箱体:EDIP 封装:Tube |
| STK17T88-RF45 | 功能描述:NVRAM 32Kbx8+RTC 2.7-3.6V RoHS:否 制造商:Maxim Integrated 数据总线宽度:8 bit 存储容量:1024 Kbit 组织:128 K x 8 接口类型:Parallel 访问时间:70 ns 电源电压-最大:5.5 V 电源电压-最小:4.5 V 工作电流:85 mA 最大工作温度:+ 70 C 最小工作温度:0 C 封装 / 箱体:EDIP 封装:Tube |
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