Cypress CY7C1345G CY7C1345G

CY7C1345G

Document Number: 38-05517 Rev. *E Page 13 of 20

Timing Diagrams

Figure 1 shows the read cycle timing. [15]

Figure 1. Read Cycle Timing

tCYC

tCL

CLK

tADH

tADS

ADDRESS

tCH

tAH

tAS

tCEH

tCES

Data Out (Q) High-Z

tCLZ

tDOH

tCDV

tOEHZ

tCDV

Single READ

BURST

READ

tOEV tOELZ tCHZ

Burst wraps around

to its initial state

tADVH

tADVS

tWEH

tWES

tADH

tADS

Q(A2)

Q(A2 + 1)

Q(A2 + 2)

Q(A1) Q(A2)

Q(A2 + 1)

Q(A2 + 2)

Q(A2 + 3)

ADV suspends burst

Deselect Cycle

DON’T CARE UNDEFINED

ADSP

ADSC

GW, BWE,BW

[A:B]

ADV

Note:

15.On this diagram, when CE is LOW: CE1 is LOW, CE2 is HIGH and CE3 is LOW. When CE is HIGH: CE1 is HIGH or CE2 is LOW or CE3 is HIGH.

Contents

Main CY7C1345G 4-Mbit (128K x 36) Flow Through Sync SRAM Features Functional Description Selection Guide Document Number: 38-05517 Rev. *E Page 2 of 20 Logic Block Diagram ZZ MODE ADDRESS REGISTER BURST COUNTER AND LOGIC CLR Q1 Q0 CY7C1345G Document Number: 38-05517 Rev. *E Page 3 of 20 Pin Configurations CY7C1345G 100-Pin TQFP Pinout CY7C1345G Pin Configurations CY7C1345G Pin Definitions Functional Overview Single Read Accesses Single Write Accesses Initiated by ADSP Single Write Accesses Initiated by ADSC Pin Definitions CY7C1345G Burst Sequences Sleep Mode ZZ Mode Electrical Characteristics Truth Table Truth Table for Read or Write Maximum Ratings Operating Range Electrical Characteristics Capacitance Thermal Resistance AC Test Loads and Waveforms Switching Characteristics CY7C1345G Timing Diagrams Figure 1 shows the read cycle timing. [15] Figure 1. Read Cycle Timing Figure 2 shows the write cycle timing. [15, 16] Figure 2. Write Cycle Timing Note: 16.Full width write can be initiated by either GW LOW; or by GW HIGH, BWE LOW and BWx LOW. Figure 3 shows the read and write timing. [16, 17, 18] Figure 3. Read/Write Timing Figure 4 shows the ZZ mode timing. [19, 20] Figure 4. ZZ Mode Timing Ordering Information Package Diagrams Figure 5. 100-Pin Thin Plastic Quad Flatpack (14 x 20 x 1.4 mm), 51-85050 A Figure 6. 119-Ball BGA (14 x 22 x 2.4 mm), 51-85115 Package Diagrams 51-85115-*B 0.900.05 0.56 Document History Page