IDT709289L_15 Datasheet, PDF (12/16 Pages) Integrated Device Technology – HIGH-SPEED 64K x 16 SYNCHRONOUS PIPELINED DUAL-PORT STATIC RAM

IDT709289L
High-Speed 64K x 16 Synchronous Pipelined Dual-Port Static RAM
Industrial and Commercial Temperature Ranges
Timing Waveform of Pipelined Read with Address Counter Advance⁽¹⁾
tCYC2
tCH2
tCL2
CLK
tSA tHA
ADDRESS
An
ADS
tSAD tHAD
tSAD tHAD
CNTEN
tCD2
tSCN tHCN
DATAOUT Qx - 1⁽²⁾
Qx
READ
EXTERNAL
ADDRESS
Qn
Qn + 1
tDC
READ WITH COUNTER
COUNTER
HOLD
Qn + 2⁽²⁾
Qn + 3
READ
WITH
COUNTER
4842 drw 15
Timing Waveform of Flow-Through Read with Address Counter Advance⁽¹⁾
tCYC1
tCH1
tCL1
CLK
tSA tHA
ADDRESS
An
ADS
tSAD tHAD
CNTEN
DATAOUT
tCD1
Qx⁽²⁾
Qn
tDC
READ
EXTERNAL
ADDRESS
tSAD tHAD
tSCN tHCN
Qn + 1
Qn + 2
READ WITH COUNTER
Qn + 3⁽²⁾
COUNTER
HOLD
Qn + 4
READ
WITH
COUNTER
4842 drw 16
NOTES:
1. CE0, OE, UB, and LB = VIL; CE1, R/W, and CNTRST = VIH.
2. If there is no address change via ADS = VIL (loading a new address) or CNTEN = VIL (advancing the address), i.e. ADS = VIH and CNTEN = VIH, then the data output
remains constant for subsequent clocks.
61.422