This document introduces the features and characteristics of M48T201Y M48T201V 5.0 or 3.3 V TIMEKEEPER® supervisor, including integrated real time clock, power-fail control circuit, battery and crystal, watchdog timer, choice of write protect voltages etc.
The M48T201Y and M48T201V are self-contained devices that include a real-time clock (RTC), programmable alarms, a watchdog timer, and a square wave output. They convert low-power SRAM into non-volatile RAM (NVRAM) and are year 2000 compliant. The devices feature an integrated real-time clock, power-fail control circuit, battery, and crystal.
| Supply Voltage (M48T201Y) | 4.5 to 5.5 V |
|---|---|
| Supply Voltage (M48T201V) | 3.0 to 3.6 V |
| Address Lines | 19 (A0-A18) |
| Max External RAM | 512 K x 8 |
| Package Type | 44-lead SOIC |
The write protect voltage (VPFD) is between 4.1V and 4.5V.
The write protect voltage (VPFD) is between 2.7V and 3.0V.
Yes, the packaging includes a separate SNAPHAT top containing the battery and crystal.