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S71WS256PC0KF3SR3 Datasheet(PDF) 6 Page - SPANSION |
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S71WS256PC0KF3SR3 Datasheet(HTML) 6 Page - SPANSION |
6 / 10 page 4 S71WS-P based MCP Products S71WS-P_00_A2 August 21, 2006 Da ta Sh eet ( A dv an ce In f o r m at io n) 3.3 NOR Flash and pSRAM Input/Output Descriptions Amax-A0 = NOR Flash Address inputs DQ15-DQ0 = Flash Data input/output, shared between NOR and ORNAND Flash. DQ0-DQ7 shared for x8 ORNAND F-CE# = NOR Flash Chip-enable input #1. Asynchronous relative to CLK for Burst Mode. OE# = Output Enable input. Asynchronous relative to CLK for Burst mode. WE# = Write Enable input. F-VCC = NOR Flash device power supply (1.7 V - 1.95V). F-VCCQ = Input/Output Buffer power supply. VSS =Ground RFU = Reserved for Future Use RDY = Flash ready output. Indicates the status of the Burst read. VOL = data valid. The Flash RDY pin is shared with the WAIT pin of the pSRAM. CLK = NOR Flash Clock, shared with CLK of burst-mode pSRAM.. The first rising edge of CLK in conjunction with AVD# low latches the address input and activates burst mode operation. After the initial word is output, subsequent rising edges of CLK increment the internal address counter. CLK should remain low during asynchronous access. AVD# = NOR Flash Address Valid input. Shared with AVD# of burst-mode pSRAM. Indicates to device that the valid address is present on the address inputs. VIL = for asynchronous mode, indicates valid address; for burst mode, causes starting address to be latched on rising edge of CLK. VIH= device ignores address inputs F-RST# = NOR Flash hardware reset input. VIL= device resets and returns to reading array data F-WP# = NOR Flash hardware write protect input. VIL = disables program and erase functions in the four outermost sectors. F-ACC = NOR Flash accelerated input. At VHH, accelerates programming; automatically places device in unlock bypass mode. At VIL, disables all program and erase functions. Should be at VIH for all other conditions. R-CE# = Chip-enable input for pSRAM R-CRE = Control Register Enable (pSRAM). For CellularRAM only. R-VCC = pSRAM Power Supply R-UB# = Upper Byte Control (pSRAM) R-LB# = Lower Byte Control (pSRAM) DNU = Do Not Use |
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