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STK14EC16-BF45TR Datasheet(PDF) 3 Page - Simtek Corporation |
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STK14EC16-BF45TR Datasheet(HTML) 3 Page - Simtek Corporation |
3 / 21 page STK14EC16 3 Simtek Confidential Jan, 2008 Document Control #ML0061 Rev 1.1 Preliminary PIN DESCRIPTIONS Pin Name I/O Description A17-A0 Input Address: The 18 address inputs select one of 262,144 words in the nvSRAM array DQ15-DQ0 I/O Data: Bi-directional 16-bit data bus for accessing the nvSRAM E Input Chip Enable: The active low E input selects the device LB Input Byte Write Select Input: Controls DQ7-DQ0 (unselected byte will not write or read). UB Input Byte Write Select Input: Controls DQ15-DQ8 (unselected byte will not write or read). W Input Write Enable: The active low W enables data on the DQ pins to be written to the address location latched by the falling edge of E G Input Output Enable: The active low G input enables the data output buffers during read cycles. De-asserting G high causes the DQ pins to tri-state. VCC Power Supply Power: 3.0V +20%, -10% HSB I/O Hardware Store Busy: When low this output indicates a Store is in progress (also low during power up while busy). When pulled low external to the chip, it will initiate a nonvolatile STORE operation. A weak pull up resistor keeps this pin high if not connected. (Connection Optional). VCAP Power Supply Autostore Capacitor: Supplies power to the nvSRAM during a power loss to store data from SRAM to nonvolatile storage ele- ments. VSS Power Supply Ground NC No Connect This pin is not connected to the die. (Do not connect in design; reserved for future use) 44-Pin TSOP-II (See full mechanical drawings on pages 18 – 20) 54-Pin TSOP-II 48-Ball FBGA VSS A2 A3 A4 A5 DQ0 DQ1 VCC VCAP DQ2 DQ3 A6 A7 A8 A1 A17 A16 A15 A14 A13 DQ7 DQ6 VSS VCC DQ5 DQ4 A12 A11 A9 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 A0 A10 E W DQ8 DQ9 DQ10 DQ11 G DQ12 DQ13 DQ14 DQ15 UB LB VSS A0 A1 A2 A3 A4 A5 DQ0 DQ1 VCC VCAP DQ2 DQ3 A6 A7 A8 NC NC A17 A16 A15 A14 A13 G DQ7 DQ6 VSS VCC DQ5 DQ4 HSB A12 A11 A9 NC NC NC 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 NC A10 E NC NC 23 24 25 26 27 W 54 53 52 51 50 49 48 47 46 45 UB LB DQ15 DQ14 DQ13 DQ12 DQ11 DQ10 DQ9 DQ8 NC LB G A0 A1 A2 NC DQ8 UB A3 A4 E DQ0 DQ9 DQ10 A5 A6 DQ1 DQ 2 VSS DQ11 A17 A7 DQ3 VCC VCC DQ12 VCAP A16 DQ4 VSS DQ14 DQ13 A14 A15 DQ5 DQ 6 DQ15 HSB A12 A13 W DQ7 NC A8 A 9 A10 A11 NC 1 2 3 4 5 6 A B C D E F G H (TOP) (TOP) (TOP) |
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