M48T37V Overview
M48T37Y M48T37V 5.0 or 3.3 V, 256 Kbit (32 Kbit x 8) TIMEKEEPER®.
M48T37V Key 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)