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NVRAM Supervisor
M48T212V: 3.3V, Parallel RTC and NVRAM
M48T212V Datasheet
M48T212V Additional Technical Information

M48T212 Packaging The M48T212V is a combination Real-Time Clock and NVRAM Supervisor. It is intended for use in high-density, surface-mount NVRAM applications, and can also be used in applications requiring a standalone parallel access RTC. It can be easily connected to most microprocessors and microcontrollers, and its Watchdog Timer and Power-on Reset/Low-Voltage Detect Output can provide supervisor functions for the microprocessor.

It can be easily connected to most microprocessors and microcontrollers, and its Watchdog Timer and Power-on Reset/Low-Voltage Detect Output can provide supervisor functions for the microprocessor.
The M48T212V is offered in our 44-lead SNAPHAT® SOIC, and offers the following features:
Parallel access (8-bit) with separate chip enable input dedicated to RTC
BCD Registers for Hours, Minutes, Seconds, Day, Date, Month, Year, and Century
Century Bits (Y2.1K compliant)
3.3V Operation - (Standby Current @2.5V: TTL = 3mA; CMOS = 2mA)
Programmable Alarm with Repeat Modes (functions in battery-backed mode)
Watchdog Timer with Programmable Time-out Period (64ms to 128s)
Calibration Register with Frequency Test Output - can be adjusted to within 2 seconds per month
Automatic Battery Switchover and Write Protect with:
 
– Vout pin that supplies an external LPSRAM

–

 Two chip enable outputs which provide power-fail write protection
Power-on Reset/Low-Voltage Detect Output
Two Reset Inputs - One for Push-button Reset
Battery Monitor
Temperature Range
 
– 0°C to +70°C
Packaging - 44-Lead SNAPHAT® SOIC (Lead-free)
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' M48T212V-85MH1E SOH44 Commercial
M48T212V Product Selector
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M48T201V Applications

Medical Instruments

Servers
SCSI
RAID Controllers
Routers
Routers

High-end Modems
Switches
Data Logging

Gaming
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M48T212V Datasheet
M48T212V Additional Technical Information

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