Cypress CY7C1345G Logic Block Diagram

CY7C1345G

Document Number: 38-05517 Rev. *E Page 2 of 20

Logic Block Diagram

ADDRESS

REGISTER

BURST

COUNTER

AND LOGIC

CLR

Q1

Q0

ENABLE

REGISTER

SENSE

AMPS

OUTPUT

BUFFERS

INPUT

REGISTERS

MEMORY

ARRAY

MODE

A[1:0]

ZZ

DQs

DQP

A0, A1, A

ADV

CLK

ADSP

ADSC

BWE

CE1

CE2

CE3

SLEEP

CONTROL

DQP

BYTE

WRITEREGISTER

DQP

BYTE

WRITEREGISTER

DQP

BYTE

WRITEREGISTER

BYTE

WRITEREGISTER

DQP

BYTE

WRITEREGISTER

DQP

BYTE

WRITEREGISTER

DQP

BYTE

WRITEREGISTER

DQP

BYTE

WRITEREGISTER

DQP

BYTE

WRITEREGISTER

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