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参数资料
| 型号： | M41ST87WMX6 |
| 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： | 16/52页 |
| 文件大小： | 689K |
| 代理商： | M41ST87WMX6 |
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M41ST87Y, M41ST87W
Operating modes
Doc ID 9497 Rev 8
negative voltage generated by the charge pump during a tamper condition, and from being
pulled to ground by the output of the charge pump when it is in shut-down mode (SHDN =
logic low). The gates of both MOSFETs should be connected to TPCLR as shown in
Figure 20 on page 25. One n-channel enhancement MOSFET should be placed between
the output of the inverting charge pump and the VOUT of the M41ST87. The other MOSFET
should be an enhancement mode p-channel, and placed between VOUT of the M41ST87
and VCC of the external SRAM. When TPCLR goes high after a tamper condition occurs, the
n-channel MOSFET will turn on and the p-channel will turn off. During normal operating
conditions, TPCLR will be low and the p-channel will be on, while the n-channel will be off.
Table 4.
Tamper detection current (normally closed - TCMX = '0')
Figure 17.
Tamper detect sampling options
TDSX
TCHI/TCLOX
Tamper circuit mode
Current at 3.0 V (typ)(1)(2)
1.
When calculating battery lifetime, this current should be added to IBAT current listed in Table 17 on page 44.
2.
Per tamper detect input
Unit
0
Continuous monitoring / 10 M
Ω pull-up/-down
0.3
A
0
1
Continuous monitoring / 1 M
Ω pull-up/-down
3.0
A
1
0
Sampling (1Hz) / 10 M
Ω pull-up/-down
0.3
nA
1
Sampling (1Hz) / 1 M
Ω pull-up/-down
3.0
nA
AI07819
TAMPER LO,
NORMALLY OPEN
TAMPER HI,
NORMALLY CLOSED
User
Configuration
TDS
X = 0
TDS
X = 1
TDS
X = 0
TDS
X = 1
TAMPER HI,
NORMALLY OPEN
TAMPER LO,
NORMALLY CLOSED
CONTINUOUS
MONITORING
CONTINUOUS
MONITORING
CONTINUOUS
MONITORING
SAMPLED
MONITORING
CONTINUOUS
MONITORING
SAMPLED
MONITORING
VCC (VOUT)
TCM
X, TPMX
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相关代理商/技术参数 |
参数描述 |
|---|---|
| M41ST87WMX6F | 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 |
| M41ST87WMX6TR | 功能描述:实时时钟 Serial 1280 (160x8) RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
| M41ST87WSS6 | 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 |
| M41ST87WSS6F | 功能描述:实时时钟 128 NVRAM Serial RTC 3.0 to 3.6 Vcc RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
| M41ST87Y | 制造商:STMICROELECTRONICS 制造商全称: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 |
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