Cypress CY7C0837AV, CY7C0830AV, CY7C0831AV, CY7C0832AV, CY7C0832BV, CY7C0833AV, + Feedback

Models: CY7C0837AV CY7C0833AV CY7C0831AV CY7C0830AV CY7C0832AV CY7C0832BV

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Manual background

 

 

 

 

 

 

CY7C0837AV, CY7C0830AV

 

 

 

 

 

 

CY7C0831AV, CY7C0832AV

 

 

 

 

 

 

CY7C0832BV, CY7C0833AV

Switching Waveforms (continued)

 

 

 

 

 

 

Figure 12. Read-to-Write-to-Read (OE Controlled)[33, 36, 38, 39]

 

 

tCH2

tCYC2

tCL2

 

 

 

 

 

 

 

 

 

 

CLK

 

 

 

 

 

 

 

CE

tSC

tHC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tSW tHW

 

 

 

R/W

tSW

tHW

 

 

 

 

 

ADDRESS

An

 

An+1

An+2

An+3

An+4

An+5

tSA

tHA

 

tSD tHD

 

 

 

 

 

 

 

 

DATAIN

 

 

tCD2

Dn+2

Dn+3

 

 

 

 

 

 

 

 

tCD2

DATAOUT

 

 

 

Qn

 

 

Qn+4

 

 

 

 

tOHZ

 

 

 

OE

 

 

READ

 

WRITE

 

READ

 

 

 

 

 

Figure 13. Read with Address Counter Advance[38]

 

 

tCYC2

 

 

 

 

 

 

tCH2

tCL2

 

 

 

 

 

CLK

 

 

 

 

 

 

 

tSA

 

tHA

 

 

 

 

 

ADDRESS

An

 

 

 

 

 

 

tSAD

 

tHAD

 

 

 

 

 

ADS

 

 

 

 

 

 

 

 

 

 

 

tSAD

tHAD

 

 

CNTEN

 

 

 

 

 

 

 

tSCN

 

tHCN

 

tSCN

tHCN

 

 

 

 

 

 

tCD2

 

 

 

DATAOUT

Qx–1

 

Qx

Qn

Qn+1

Qn+2

Qn+3

 

READ

tDC

READ WITH COUNTER

COUNTER HOLD

READ WITH COUNTER

 

 

EXTERNAL

 

 

 

 

ADDRESS

 

 

 

 

 

Document #: 38-06059 Rev. *S

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Cypress manual CY7C0837AV, CY7C0830AV, CY7C0831AV, CY7C0832AV, CY7C0832BV, CY7C0833AV, Switching Waveforms continued