The DS3065W is a combination of static RAM and nonvolatile controller, with a year 2000-compliant real-time clock and an internal rechargeable manganese lithium battery. It has a 256-ball BGA footprint and internal rechargeable function. When powered by an external power source, it can recharge the manganese lithium battery, power the clock and SRAM, and allow modification of the clock registers or SRAM contents. When the external power is powered down or out-of-tolerance, the controller write-protects the memory contents and powers the clock and SRAM from the battery. The DS3065W also contains a power-supply monitor output and a user-programmable interrupt output.
The DS3065W is a 3.3 V single‑piece 8 Mb non‑volatile SRAM that includes an integrated real‑time clock and a rechargeable manganese‑lithium (ML) battery. The device is offered in a 256‑ball BGA package and provides a power‑supply monitor output and a user‑programmable interrupt output.
Designed for RAID systems, servers, POS terminals, fire alarms, industrial controllers and other temperature‑sensitive applications, the DS3065W operates from –40 °C to +85 °C and retains data for up to several years after a full battery charge. Detailed electrical, timing and power‑up/down characteristics are provided for system designers.
| Supply Voltage (Vcc) | 3.0 V min / 3.3 V typ / 3.6 V max |
|---|---|
| Operating Temperature Range | -40 °C to +85 °C |
| Access Time (tACC) | 100 ns |
| Battery Charging Time | ≈96 hours to full charge |
The device operates from –40 °C to +85 °C.
It reaches full charge after approximately 96 hours of operation with Vcc above VTP.
Typical pull‑up resistor values are between 1 kΩ and 10 kΩ.