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参数资料
| 型号： | M41ST87YMX6TR |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 时钟/数据恢复及定时提取 |
| 英文描述： | 1 TIMER(S), REAL TIME CLOCK, PDSO28 |
| 封装： | 0.300 INCH, ROHS COMPLIANT, PLASTIC, SOX-28 |
| 文件页数： | 20/48页 |
| 文件大小： | 457K |
| 代理商： | M41ST87YMX6TR |
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M41ST87Y, M41ST87W
Operating modes
2.11
Tamper event time-stamp
Regardless of which tamper occurs first, not only will the appropriate tamper bit be set, but
the event will also be automatically time-stamped. This is accomplished by freezing the
normal update of the clock registers (00h through 07h) immediately following a tamper
event. Thus, when tampering occurs, the user may first read the time registers to determine
exactly when the tamper event occurred, then re-enable the clock update to the current time
(and reset the tamper bit, TBX) by resetting the tamper enable bit (TEBX).
The time update will then resume and the clock can be read to determine the current time.
Both tamper enable bits (TEBX) must always be set to '0' in order to read the current time.
In the event of multiple tampers, the time-stamp will reflect the initial tamper event.
Note:
If the TEBX bit is set, the tamper event time-stamp will take precedence over the power
down time-stamp (see Section 3.0.1: Power-down time-stamp on page 28) and the HT bit
(halt update) will not be set during the power-down event. If both are needed, the power
down time-stamp may be accomplished by writing the time into the general purpose RAM
memory space when PFO is asserted.
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PDF描述 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| M41ST87YSS6 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:5.0 V and 3.3/3.0 V secure serial RTC and NVRAM supervisor with tamper detection and 128 bytes of clearable NVRAM |
| M41ST87YSS6F | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:5.0 V and 3.3/3.0 V secure serial RTC and NVRAM supervisor with tamper detection and 128 bytes of clearable NVRAM |
| M41ST95W | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:5.0 or 3.0V, 512 bit (64 bit X 8) Serial RTC (SPI) SRAM and NVRAM Supervisor |
| M41ST95WMH6 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:5.0 or 3.0V, 512 bit (64 bit X 8) Serial RTC (SPI) SRAM and NVRAM Supervisor |
| M41ST95WMH6E | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:5.0 or 3.0V, 512 bit (64 bit X 8) Serial RTC (SPI) SRAM and NVRAM Supervisor |
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