Cypress CY7C1305BV25, CY7C1307BV25 Switching Waveforms[27, 28, 29]

CY7C1307BV25

CY7C1305BV25

Document #: 38-05630 Rev. *A Page 19 of 21

Switching Waveforms[27, 28, 29]

Notes:

27.Q00 refers to output from address A0. Q01 refers to output from the next internal burst address following A0, i.e., A0+1.

28.Outputs are disabled (High-Z) one clock cycle after a NOP.

29.In this example, if address A2 = A1 then data Q20 = D10 and Q21 = D11. Write data is forwarded immediately as read results.This note applies to the whole diagram.

1234567

RPS

READ READWRITE WRITE

Q00 Q03

D10 D11 D12 D13 D30 D31 D32 D3

tKH tKHKH

tKHCH tCO tDOH

tKL tCYC

t tHC

tSA tHA

tSD

tHD

tKHCH

Q01 Q02 Q23Q22Q20 Q21

NOP NOP

Qx3

tSD

tHD

DON’T CARE UNDEFINE

tCLZ tCO tDOH tCHZ

SC ttHC

tKH

tKHKH tKL

tCYC

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Contents

Main CY7C1307BV25 18-Mbit Burst of 4 Pipelined SRAM with Q DR Architecture CY7C1305BV25 Features CY7C1307BV25 CY7C1305BV25 Document #: 38-05630 Rev. *A Page 2 of 21 Selection Guide Logic Block Diagram (CY7C1307BV25) Logic Block Diagram (CY7C1305BV25) CY7C1307BV25 CY7C1305BV25 Pin Configuration 165-ball FBGA (13 x 15 x 1.4 mm) Pinout CY7C1305BV25 (1M x 18) CY7C1307BV25 (512K x 36) Pin Definitions CY7C1307BV25 CY7C1305BV25 Introduction Pin Definitions Application Example CY7C1307BV25 CY7C1305BV25 Truth Table Write Cycle Descriptions (CY7C1305BV25) Write Cycle Descriptions IEEE 1149.1 Serial Boundary Scan (JTAG) Page Page Page CY7C1307BV25 CY7C1305BV25 TAP Timing and Test Conditions Identification Register Definitions TAP AC Switching Characteristics Test Clock Test Mode Select Scan Register Sizes Instruction Codes Boundary Scan Order Maximum Ratings Operating Range Electrical Characteristics Thermal Resistance Capacitance [+] Feedback 5pF CCLK Clock Input Capacitance 6 pF COOutput Capacitance 7 pF AC Test Loads and Waveforms ZQ ZQ Switching Characteristics Switching Waveforms[27, 28, 29] 1234567 READ READWRITE WRITE NOP NOP Ordering Information [+] Feedback 51-85180-*A SOLDER PAD TYPE : NON-SOLDER MASK DEFINED (NSMD) 1.40 MAX. Document History Page