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BQ4010MA-85 Datasheet(PDF) 3 Page - Texas Instruments |
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BQ4010MA-85 Datasheet(HTML) 3 Page - Texas Instruments |
3 / 16 page www.ti.com BLOCK DIAGRAM 8 k × 8 SRAM Block OE WE A 0 - A12 DQ 0 - DQ7 Power-Fail Control Power CE CON CE V CC + Lithium Cell UDG-06075 DIP MODULE bq4010/Y/LY MA PACKAGE bq4010/Y/LY SLUS116A – MAY 1999 – REVISED JUNE 2007 When VCC returns to a level above the internal backup cell voltage, the supply is switched back to VCC. After VCC ramps above the VPFD threshold, write-protection continues for a time tCER (120 ms maximum in 5-V system, 85 ms maximum in 3.3-V system) to allow for processor stabilization. Normal memory operation may resume after this time. The internal coin cells used by the bq4010/Y/LY have an extremely long shelf life and provide data retention for more than 10 years in the absence of system power. As shipped from TI, the integral lithium cells of the MT-type module are electrically isolated from the memory. (Self-discharge in this condition is approximately 0.5% per year.) Following the first application of VCC, this isolation is broken, and the lithium backup provides data retention on subsequent power-downs. TRUTH TABLE MODE CE WE OE I/O OPERATION POWER Not selected H X X High-Z Standby Output disable L H H High-Z Active Read L H L DOUT Active Write L L X DIN Active 3 Submit Documentation Feedback Not Recommended For New Designs |
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Similar Description - BQ4010MA-85 |
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