s71ws256rd0hh3 Meet Spansion Inc., s71ws256rd0hh3 Datasheet - Page 7

• Manufacturer Part Number: s71ws256rd0hh3
• Description: 1.8 Volt-only X16 Simultaneous Read/write, Burst Mode Flash Memory With Cellularram
• Manufacturer: Meet Spansion Inc.

3.3
November 19, 2008 S71WS-R_00_03
NOR Flash and pSRAM Input/Output Descriptions
DQ15-DQ0
D a t a
Amax-A0
F-RST#
F-V
R-CRE
R-VCC
Signal
F-ACC
R-CE#
R-UB#
F-CE#
R-LB#
F-V
AVD#
WE#
DNU
OE#
RFU
RDY
CLK
V
SS
CCQ
CC
S h e e t
NOR Flash/pSRAM Address inputs
Flash Data input/output, shared between NOR and pSRAM
NOR Flash Chip-enable input #1. Asynchronous relative to CLK for Burst Mode.
Output Enable input. Asynchronous relative to CLK for Burst mode.
Write Enable input.
NOR Flash device power supply (1.7 V - 1.95 V).
Input/Output Buffer power supply.
Ground
Reserved for Future Use
Flash ready output. Indicates the status of the Burst read. V
pin is shared with the WAIT pin of the pSRAM.
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.
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.
V
address to be latched on rising edge of CLK.
V
NOR Flash hardware reset input. V
NOR Flash accelerated input. At V
device in unlock bypass mode. At V
at V
Chip-enable input for pSRAM
Control Register Enable (pSRAM). For CellularRAM only.
pSRAM Power Supply
Upper Byte Control (pSRAM)
Lower Byte Control (pSRAM)
Do Not Use
IL
IH
= device ignores address inputs
= for asynchronous mode, indicates valid address; for burst mode, causes starting
IH
for all other conditions.
( A d v a n c e
S71WS-R based MCP Products
HH
IL
IL
I n f o r m a t i o n )
= device resets and returns to reading array data
, disables all program and erase functions. Should be
, accelerates programming; automatically places
Description
OL
= data valid. The Flash RDY
Flash
X
X
X
X
X
X
X
X
X
X
X
X
X
pSRAM
X
X
X
X
X
X
X
X
X
X
X
X
X
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