Product overview
描述
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”.
-
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
电路原理图
EDA Symbols, Footprints and 3D Models
STMicroelectronics - M48T37Y
Speed up your design by downloading all the EDA symbols, footprints and 3D models for your application. You have access to a large number of CAD formats to fit with your design toolchain.
Please select one model supplier :
Symbols
Footprints
3D models
Quality and Reliability
| Part Number | Marketing Status | Package | Grade | 符合RoHS级别 | Longevity Commitment | Longevity Starting Date | Material Declaration** |
|---|---|---|---|---|---|---|---|
| M48T37Y-70MH1F | Active 产品已量产 | SOH44 | Industrial | Ecopack2 | - | - |
(**) 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。
You’re now leaving st.com and will be re-directed to our Partner’s website.
For the latest innovations and solutions from ST, sign up for our newsletters.
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 | |||||||||||||
| M48T37Y-70MH1F | | | distributors 无法联系到经销商，请联系我们的销售办事处 | |||||||||||
M48T37Y-70MH1F Active