IDT72V801(2014) Просмотр технического описания (PDF) - Integrated Device Technology

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IDT72V801
(Rev.:2014)

3.3 VOLT DUAL CMOS SyncFIFO™

Integrated Device Technology 

IDT72V801/72V8211/72V821/72V831/72V841/72V851 3.3V DUAL CMOS SyncFIFOTM

DUAL 256 x 9, DUAL 512 x 9, DUAL 1K x 9, DUAL 2K x 9, DUAL 4K x 9, DUAL 8K x 9

WCLKA

(WCLKB)

DA0 - DA8

(DB0 - DB8)

NO WRITE

tSKEW1

tDS

tDH

FFA (FFB)

WENA1

(WENB1)

WENA2

(WENB2)

(If Applicable)

tWFF

tENS

tENS

tWFF

tENH

tENH

NO WRITE

COMMERCIAL AND INDUSTRIAL

TEMPERATURE RANGES

NO WRITE

tSKEW1

tWFF

tENS(1)

tENS(1)

RCLKA

(RCLKB)

tENS

RENA1

(RENB2)

OEA LOW

(OEB)

tENH

tA

QA0 - QA8

(QB0 - QB8)

DATA IN OUTPUT REGISTER

tENS

tENH

tA

DATA READ

NOTE:

1. Only one of the two Write Enable inputs, WEN1 or WEN2, needs to go inactive to inhibit writes to the FIFO.

Figure 8. Full Flag Timing

NEXT DATA READ

4093 drw 10

WCLKA (WCLKB)

DA0 - DA8

(DB0 - DB8)

tDS

tENS

DATA WRITE 1

tENH

WENA1, (WENB1)

tENS

WENA2 (WENB2)

(If Applicable)

RCLKA (RLCKB)

tENH

tSKEW1

(1)

tFRL

tREF

EFA (EFB)

tDS

tENS

DATA WRITE 2

tENH

tENS

tENH

tREF

tSKEW1

(1)

tFRL

tREF

RENA1, RENA2

(RENB1, RENB2)

OEA (OEB) LOW

tA

QA0 - QA8

(QB0 - QB8)

DATA IN OUTPUT REGISTER

NOTE:

1. When tSKEW1 ≥ minimum specification, tFRL maximum = tCLK + tSKEW1

When tSKEW1 < minimum specification, tFRL maximum = 2tCLK + tSKEW1 or tCLK + tSKEW1

The Latency Timings apply only at the Empty Boundary (EFA, EFB = LOW).

Figure 9. Empty Flag Timing

11

DATA READ

4093 drw 11

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