M48T201Y and M48T201V are chips that convert low power SRAM into NVRAMs. They are year 2000 compliant and feature a battery low flag, integrated real-time clock, power-fail control circuit, battery, and crystal. The chips also include a watchdog timer, choice of write protect voltages, microprocessor power-on reset, and programmable alarm output active in the battery backed-up mode. The package includes a 44-lead SOIC and SNAPHAT® TOP for direct connection of the battery and crystal.
The document describes the M48T201Y and M48T201V devices, which are self-contained Timekeeper units that convert low-power static RAM into non-volatile memory. These chips integrate a real-time clock, programmable alarms, a watchdog timer, and a square wave output to control up to 512K x 8 of external SRAM.
| Supply Voltage (M48T201Y) | Vcc = 4.5 to 5.5V |
|---|---|
| Supply Voltage (M48T201V) | Vcc = 3.0 to 3.6V |
| External RAM Capacity | up to 512K x 8 |
| Package Type | 44-lead SOIC |
| Battery Capacity (SH12) | 120mAh |
They are self-contained devices that convert low-power SRAM into NVRAM.
Yes, the SOIC package provides direct connection for a SNAPHAT top which contains the battery and crystal.
The device has two reset inputs named RSTIN1 and RSTIN2.