FMP3216DAx

CMOS LPRAM

tWC

Address

/CS

/UB, /LB

/WE

tWC

tCW(2)

tWR(4)

tAW

tBW

tWP(1)

tWC

Data Out

tAS(3)

High-Z

High-Z

Data Undefined

Data Valid

tDW

tDH

tOW

tWHZ

Data in

Address

/CS

/UB, /LB

/WE

tWC

tWR(4)

tBW

tWP(1)

tDW

tDH

tCW(2)

tAS(3)

tAW

Data Out

High-Z

High-Z

Data Valid

tDW

tDH

Data in

Address

tWC

Address

/CS

/UB, /LB

/WE

tWR(4)

tBW

tWP(1)

tDW

tDH

tCW(2)

tAW

tAS(3)

1. A write occurs during the overlap (tWP) of low /CS and /WE. A write begins when /CS goes low and /WE goes low with

asserting /UB or /LB for single byte operation or simultaneously asserting /UB and /LB for double byte operation. A write

ends at the earliest transition when /CS goes high and WE goes high. The tWP is measured from the beginning of write to

the end of write.

2. tCW is measured from the /CS going low to end of write.

3. tAS is measured from the address valid to the beginning of write.

Data Out

High-Z

High-Z

Data Valid

Data in

Revision 0.1

Jul. 2010

8

gg

4. tWR is measured from the end of write to the address change. tWR applied in case a write ends as /CS or /WE going high.

5. Do not access device with cycle timing shorter than tRC(tWC) for continuous periods > 20us.