Key facts
- Brand
- STMicroelectronics
- Model
- M48T37Y
- Industry
- Industrial
- Documents
- 3
- Languages
- EN
- Last added
- 2012-08-09
Start here
ST M48T37Y M48T37V 5.0 or 3.3 V 256 Kbit (32 Kbit x 8) TIMEKEEPER SRAM handbook
The M48T37Y/V TIMEKEEPER SRAM is a 32 Kb x 8 non-volatile static RAM and real-time clock integrated on a single silicon chip. It features an ultra-low power design with a real-time SNAPHAT clock, power-fail control circuit, and battery backup capability. The device includes a watchdog timer, programmable alarm output, and automatic power-fail chip deselect with write protection.
Read onlineSTMicroelectronics M48T37Y specifications
| Memory Capacity | 256 Kbit (32 Kbit x 8) |
|---|---|
| Supply Voltage | 5.0 or 3.3 V |
| Package Type | 44-lead SOIC |
| Operating Temperature | -40 to +85 degrees Celsius |
Source: ST M48T37Y M48T37V 5.0 or 3.3 V 256 Kbit (32 Kbit x 8) TIMEKEEPER SRAM handbook
All STMicroelectronics M48T37Y documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the function of the watchdog timer?
The watchdog timer redirects an out-of-control microprocessor and provides a reset or interrupt to it.
From: ST M48T37Y M48T37V 5.0 or 3.3 V 256 Kbit (32 Kbit x 8) TIMEKEEPER SRAM handbook
How does the device handle power failure?
When Vcc falls below the battery backup switchover voltage, the circuit connects the battery to maintain data and clock operation.
From: ST M48T37Y M48T37V 5.0 or 3.3 V 256 Kbit (32 Kbit x 8) TIMEKEEPER SRAM handbook
What voltage range does the M48T37Y operate at?
The M48T37Y operates from 4.5 V to 5.5 V.
From: ST M48T37Y M48T37V 5.0 or 3.3V 256 Kbit (32 Kbit x8) TIMEKEEPER SRAM handbook
What voltage range does the M48T37V operate at?
The M48T37V operates from 3.0 V to 3.6 V.
From: ST M48T37Y M48T37V 5.0 or 3.3V 256 Kbit (32 Kbit x8) TIMEKEEPER SRAM handbook
How is the SNAPHAT battery/crystal package attached?
The SNAPHAT housing is inserted after the SOIC reflow process to avoid damage to the battery and crystal.
What is the maximum read cycle time?
The read cycle time is specified as 70 ns to 100 ns.