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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： | 40/52页 |
| 文件大小： | 689K |
| 代理商： | M41ST87WMX6 |
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M41ST87Y, M41ST87W
DC and AC parameters
Doc ID 9497 Rev 8
VSO
Battery backup
switchover
2.5
V
RSW
External switch
resistance on
tamper pin
500
Ω
1.
Valid for ambient operating temperature: TA = –40 to 85 °C; VCC = 4.5 to 5.5 V or 2.7 to 3.6 V (except where noted).
2.
3.
RSTIN1 and RSTIN2 internally pulled-up to VCC through 100 kΩ resistor. WDI internally pulled-down to VSS through
100 k
Ω resistor.
4.
Outputs deselected.
5.
External SRAM must match RTC supervisor chip VCC specification.
6.
For PFO1 and PFO2 (if PFOD = '0'), SQW/FT (if SQWOD = '0'), and TPCLR pins (CMOS).
7.
Conditioned output (ECON) can only sustain CMOS leakage current in the battery backup mode. Higher leakage currents
will reduce battery life.
8.
TPCLR output can source –300 A (typ) for VBAT = 2.9 V.
9.
For IRQ/OUT, SQW/FT (if SQWOD = '1'), PFO1 and PFO2 (if PFOD = '1'), RST, SDA, and F32k pins (open drain).
Table 17.
DC characteristics (continued)
Table 18.
Crystal(1) electrical characteristics
Symbol
Parameter(2)
Min
Typ
Max
Units
fO
Resonant frequency
32.768
kHz
RS
Series resistance
65(3)
k
Ω
CL
Load capacitance
12.5
pF
1.
User supplied for the 20-lead SSOP package. STMicroelectronics recommends the KDS DT-38 (3 x 8 mm) for thru-hole, or
the KDS DMX-26S (3.2 x 8 mm) for surface-mount, tuning fork-type quartz crystals. For contact information, see Section 8:
2.
Load capacitors are integrated within the M41ST87. Circuit board layout considerations for the 32.768 kHz crystal of
minimum trace lengths and isolation from RF generating signals should be taken into account.
3.
TA = –40 to 85 °C (guaranteed by design).
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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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