Product overview
概要
The M48T37Y/V TIMEKEEPER®RAM is a 32 Kb x 8 non-volatile static RAM and real-time clock. The monolithic chip is available in a special package which provides a highly integrated battery-backed memory and real-time clock solution.
The 44-lead, 330 mil SOIC package 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/crystal 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 and crystal 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 “M4T28-BR12SH” or “M4T32-BR12SH”.
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All features
- Integrated ultra low power SRAM, real-time clock, power-fail control circuit, and battery
- Frequency test output for real-time clock software calibration
- Automatic power-fail chip deselect and WRITE protection
- Watchdog timer
- WRITE protect voltage (VPFD= Power-fail deselect voltage):
- M48T37Y: VCC= 4.5 to 5.5 V 4.2 V ≤ VPFD≤ 4.5 V
- M48T37V: VCC= 3.0 to 3.6 V 2.7 V ≤ VPFD≤ 3.0 V
- Packaging includes a 44-lead SOIC and SNAPHAT®top (to be ordered separately)
- SOIC package provides direct connection for a SNAPHAT®top which contains the battery and crystal
- Microprocessor power-on reset (valid even during battery backup mode)
- Programmable alarm output active in the battery backup mode
- Battery low flag
- RoHS compliant
- Lead-free second level interconnect
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STMicroelectronics - M48T37Y
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Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHSコンプライアンスグレード | Longevity Commitment | Longevity Starting Date | Material Declaration** |
|---|---|---|---|---|---|---|---|
| M48T37Y-70MH1F | Active 交換品交換品 | SOH44 | Industrial | Ecopack2 | - | - |
(**) st.comで提供している材料宣誓書は、パッケージ･ファミリ内で最も一般的に使用されているパッケージに基づく汎用ドキュメントの場合があります。そのため、特定の製品では100%正確ではない可能性があります。特定の製品情報については、セールスサポートまでお問い合わせください
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Sample & Buy
| Part Number | 製品ステータス | Budgetary Price (US$)*/Qty | STから購入 | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating temperature (°C) | Operating Temperature (°C) (max) | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 最小 | 最大 | |||||||||||||
| M48T37Y-70MH1F | | | distributors 販売代理店に在庫がない場合は、STのセールス･オフィスまでお問い合わせください | |||||||||||
M48T37Y-70MH1F Active
販売代理店に在庫がない場合は、STのセールス･オフィスまでお問い合わせください
（*）概算用の参考価格（US$）です。現地通貨でのお見積りについては、STのセールス･オフィスまたは販売代理店までお問い合わせください。