The DS1345W 3.3V 1024k NV SRAM is a 1,048,576-bit, fully static, nonvolatile SRAM organized as 131,072 words by 8 bits. Each NV SRAM has a self-contained lithium energy source and control circuitry, which constantly monitors VCC for an out-of-tolerance condition. When such a condition occurs, the lithium energy source is automatically switched on and write protection is unconditionally enabled to prevent data corruption. Additionally, the DS1345W has dedicated circuitry for monitoring the status of VCC and the status of the internal lithium battery. DS1345W devices in the PowerCap Module package are directly surface mountable and are normally paired with a DS9034PC PowerCap to form a complete Nonvolatile SRAM module. The devices can be used in place of 128k x 8 SRAM, EEPROM or Flash components.
Key Features
10 years minimum data retention in the absence of external power
Data is automatically protected during power loss
Power supply monitor resets processor when VCC power loss occurs and holds processor in reset during VCC ramp-up
Battery monitor checks remaining capacity daily
Read and write access times as fast as 100ns
Unlimited write cycle endurance
Typical standby current 50µA
Upgrade for 128k x 8 SRAM, EEPROM or Flash
Lithium battery is electrically disconnected to retain freshness until power is applied for the first time
Optional industrial temperature range of -40°C to +85°C, designated IND
Notes: **This pricing is BUDGETARY, for comparing similar parts. Prices are in
U.S. dollars and subject to change. Quantity pricing may vary
substantially and international prices may differ due to local
duties, taxes, fees, and exchange rates. For volume-specific prices
and delivery, please see the price and availability page
or contact an authorized distributor.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
Devices:
1-6
of
6
DS1345W
Notes
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Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
Temp
RoHS/Lead-Free? Materials Analysis
DS1345WP-100
3.3V, 100ns
PWRCP;34 pin;607 mm²
Dwg: 56-G0003-001A1 (PDF)
Use pkgcode/variation: PC2-3*
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