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CY14B101LA-SP25XI Datasheet(PDF) 5 Page - Cypress Semiconductor |
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CY14B101LA-SP25XI Datasheet(HTML) 5 Page - Cypress Semiconductor |
5 / 28 page CY14B101LA CY14B101NA Document #: 001-42879 Rev. *L Page 5 of 28 Pin Definitions Pin Name I/O Type Description A0–A16 Input Address inputs. Used to select one of the 131,072 bytes of the nvSRAM for × 8 configuration. A0–A15 Address inputs. Used to select one of the 65,536 words of the nvSRAM for × 16 configuration. DQ0–DQ7 Input/Output Bidirectional data I/O lines for × 8 configuration. Used as input or output lines depending on operation. DQ0–DQ15 Bidirectional Data I/O Lines for × 16 configuration. Used as input or output lines depending on operation. WE Input Write Enable input, Active LOW. When the chip is enabled and WE is LOW, data on the I/O pins is written to the specific address location. CE Input Chip Enable input, Active LOW. When LOW, selects the chip. When HIGH, deselects the chip. OE Input Output Enable, Active LOW. The active LOW OE input enables the data output buffers during read cycles. I/O pins are tristated on deasserting OE HIGH. BHE Input Byte High Enable, Active LOW. Controls DQ15–DQ8. BLE Input Byte Low Enable, Active LOW. Controls DQ7–DQ0. VSS Ground Ground for the device. Must be connected to the ground of the system. VCC Power supply Power supply inputs to the device. 3.0 V +20%, –10% HSB[13] Input/Output Hardware STORE Busy (HSB). When LOW, this output indicates that a Hardware STORE is in progress. When pulled LOW, external to the chip, it initiates a nonvolatile STORE operation. After each Hardware and Software STORE operation HSB is driven HIGH for a short time (tHHHD) with standard output high current and then a weak internal pull-up resistor keeps this pin HIGH (external pull-up resistor connection optional). VCAP Power supply AutoStore capacitor. Supplies power to the nvSRAM during power loss to store data from SRAM to nonvolatile elements. NC No connect No connect. This pin is not connected to the die. Note 13. HSB pin is not available in 44-pin TSOP II (× 16) package. [+] Feedback |
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