Product overview
描述
The M48T201Y/V are self-contained devices that include a real time clock (RTC), programmable alarms, a watchdog timer, and a square wave output which provides control of up to 512 K x 8 of external low-power static RAM. Access to all RTC functions and the external RAM is the same as conventional bytewide SRAM. The 16 TIMEKEEPER® registers offer year, month, date, day, hour, minute, second, calibration, alarm, century, watchdog, and square wave output data. Externally attached static RAMs are controlled by the M48T201Y/V via the GCON and ECON signals.
The 44-pin, 330 mil SOIC provides sockets with gold plated contacts at both ends for direct connection to a separate SNAPHAT® housing containing the battery and crystal. The unique design allows the SNAPHAT battery package to be mounted on top of the SOIC package after the completion of the surface mount process.
Insertion of the SNAPHAT housing after reflow prevents potential battery damage due to the high temperatures required for device surface-mounting. The SNAPHAT housing is keyed to prevent reverse insertion. The SOIC and battery packages are shipped separately in plastic anti-static tubes or in tape & reel form. For the 44-lead SOIC, the battery/crystal package (e.g. SNAPHAT) part number is M4Txx-BR12SH (see Table 19 on page 33).
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All features
- SOIC package provides direct connection for a SNAPHAT® top which contains the battery and crystal
- Packaging includes a 44-lead SOIC and SNAPHAT® top (to be ordered separately)
- RoHS compliant
Lead-free second level interconnect - Microprocessor power-on reset (valid even during battery back-up mode.)
- Choice of write protect voltages
M48T201Y: VCC = 4.5 to 5.5V 4.1V≤VPFD≤4.5V\t\t M48T201V: VCC = 3.0 to 3.6V 2.7V≤VPFD≤3.0V\t\t - Converts low power SRAM into NVRAMs
- Battery low flag
- Year 2000 compliant
- Watchdog timer
- Programmable alarm output active in the battery backed-up mode
- Integrated real time clock, power-fail control circuit, battery and crystal
电路原理图
EDA Symbols, Footprints and 3D Models
STMicroelectronics - M48T201V
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所有资源
| Resource title | 版本 | Latest update | Actions | Details | 下載 |
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IBIS models (1)
| Resource title | 版本 | Latest update | Actions | Options | ||
|---|---|---|---|---|---|---|
| ZIP | 1.0 | 01 Aug 2015 | 01 Aug 2015 |
Quality and Reliability
| Part Number | Marketing Status | Package | Grade | 符合RoHS级别 | Longevity Commitment | Longevity Starting Date | Material Declaration** |
|---|---|---|---|---|---|---|---|
| M48T201V-85MH1F | Active 产品已量产 | SOH44 | Industrial | Ecopack3 | - | - |
(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此，它们可能不是100%适用于特定的设备。有关特定设备的信息，请联系 销售支持。
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Sample & Buy
| Part Number | 供货状态 | Budgetary Price (US$)*/Qty | 从ST订购 | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating temperature (°C) | Operating Temperature (°C) (max) | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 最小值 | 最大值 | |||||||||||||
| M48T201V-85MH1F | | | distributors 无法联系到经销商，请联系我们的销售办事处 | |||||||||||
M48T201V-85MH1F Active