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參數(shù)資料
| 型號(hào)： | M41ST87WMX6T |
| 廠商： | STMICROELECTRONICS |
| 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： | 1 TIMER(S), REAL TIME CLOCK, PDSO28 |
| 封裝： | 0.300 INCH, PLASTIC, SOIC-28 |
| 文件頁(yè)數(shù)： | 10/38頁(yè) |
| 文件大?。?/td> | 552K |
| 代理商： | M41ST87WMX6T |
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M41ST87Y, M41ST87W
18/38
tion. The state of the TCHI/TCLOX Bit is a “Don’t
care” for Normally Open (TCMX = '1') mode.
RAM Clear (CLR1 and CLR2). When either of
these bits and the TEBX Bit are set to a logic '1,'
the internal 128 bytes of user RAM (see Figure 21,
page 21) will be cleared to all zeros in the event of
a tamper condition. The 128 bytes of user RAM
will be deselected until the corresponding TEBX
Bit is reset to '0.'
RAM Clear External (CLR1EXT and CLR2EXT).
When either of these bits are set to a logic '1' and
the TEBX Bit is also set to logic '1,' the external
SRAM will be cleared and the RST output en-
abled.
Note: The reset output resulting from a tamper
event will be the same as a reset resulting from a
power-down condition, a watchdog time-out, or a
manual reset (RSTIN1 or RSTIN2).
This is accomplished by forcing TPCLR high, and
switching off VOUT and ECON (Hi-Z) in the event of
a tamper condition. This allows the user to both in-
hibit the DC regulator (if the SRAM continues to
draw current from other inputs and retain data),
and optionally connect an inverting charge pump
page 7). Depending on the process technology
used for the manufacturing of the external SRAM,
clearing the memory may require varying dura-
tions of negative potential on the VCC pin. This de-
vice configuration will allow the user to program
the time needed for their particular application.
Control Bits CLRPW0 and CLRPW1 determine the
Table 8. Tamper Detection Current (Normally Closed - TCMX = '0')
Note: When calculating battery lifetime, this current should be added to IBAT current listed in Table 5, page 9.
TDSX
TCHI/TCLOX
Tamper Circuit Mode
Current at 3.0V (typ)
Unit
0
Continuous Monitoring / 10M
pull-up/-down
0.3
A
0
1
Continuous Monitoring / 1M
pull-up/-down
3.0
A
1
0
Sampling (1Hz) / 10M
pull-up/-down
0.3
nA
1
Sampling (1Hz) / 1M
pull-up/-down
3.0
nA
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| M41T00SC64MY6E | REAL TIME CLOCK, PDSO18 |
| M41T00SM6F | 0 TIMER(S), REAL TIME CLOCK, PDSO8 |
| M41T00SMY6T | REAL TIME CLOCK, PDSO8 |
| M41T00 | 1 TIMER(S), REAL TIME CLOCK, PDSO8 |
| M41T0DS6E | REAL TIME CLOCK, PDSO8 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M41ST87WMX6TR | 功能描述:實(shí)時(shí)時(shí)鐘 Serial 1280 (160x8) RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲(chǔ)容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| M41ST87WSS6 | 制造商:STMICROELECTRONICS 制造商全稱(chēng):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 |
| M41ST87WSS6F | 功能描述:實(shí)時(shí)時(shí)鐘 128 NVRAM Serial RTC 3.0 to 3.6 Vcc RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲(chǔ)容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| M41ST87Y | 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:5.0, 3.3, or 3.0V, 1280 bit (160 x8) Secure Serial RTC and NVRAM Supervisor with Tamper Detection |
| M41ST87Y_08 | 制造商:STMICROELECTRONICS 制造商全稱(chēng):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 |
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