CY7C027V/027VN/027AV/028V

CY7C037V/037AV/038V

3.3V 32K/64K x 16/18 Dual-Port Static

RAM

Features

True Dual-Ported memory cells which allow simultaneous access of the same memory location

32K x 16 organization (CY7C027V/027VN/027AV [1])

64K x 16 organization (CY7C028V)

32K x 18 organization (CY7C037V/037AV[2])

64K x 18 organization (CY7C038V)

0.35 micron CMOS for optimum speed and power

High speed access: 15, 20, and 25 ns

Low operating power

Active: ICC = 115 mA (typical)

Standby: ISB3 = 10 μA (typical)

Fully asynchronous operation

Automatic power down

Expandable data bus to 32/36 bits or more using Master/Slave chip select when using more than one device

On-chip arbitration logic

Semaphores included to permit software handshaking between ports

INT flag for port-to-port communication

Separate upper-byte and lower-byte control

Dual chip enables

Pin select for Master or Slave

Commercial and Industrial temperature ranges

100-pin Pb-free TQFP and 100-pin TQFP

Logic Block Diagram

 

 

 

 

 

 

 

R/WL

 

 

 

 

 

 

 

 

R/WR

UBL

 

 

 

 

 

 

 

 

UBR

CE0L

 

 

 

 

 

 

 

 

CE0R

CE1L

 

CEL

 

 

 

 

CER

 

CE1R

LBL

 

 

 

 

 

 

 

 

LBR

OEL

 

 

 

 

 

 

 

 

OER

I/O8/9L–I/O[3]15/17L

8/9

 

 

 

 

8/9

I/O8/9L–I/O15/17R[3]

8/9

 

I/O

I/O

 

8/9

 

[4]

 

 

 

[4]

I/O0L–I/O7/8L

 

 

Control

Control

 

 

I/O0L–I/O7/8R

 

[5]

15/16

Address

True Dual-Ported

Address

15/16

 

[5]

A0L–A14/15L

 

Decode

 

RAM Array

Decode

 

A0R–A14/15R

 

 

 

 

 

 

 

 

[5]

 

15/16

 

 

15/16

 

 

[5]

A0L–A14/15L

 

 

 

 

 

 

A0R–A14/15R

CEL

 

 

 

 

Interrupt

 

 

 

CER

OEL

 

 

 

 

Semaphore

 

 

 

OER

R/WL

 

 

 

 

Arbitration

 

 

 

R/WR

SEML

[6]

 

 

 

 

 

 

[6]

SEMR

BUSY

 

 

 

 

 

 

BUSY

L

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R

INTL

 

 

 

 

 

 

 

 

INTR

UBL

 

 

 

 

 

 

 

 

UBR

LBL

 

 

 

 

M/S

 

 

 

LBR

Notes

 

 

 

 

 

 

 

 

 

1. CY7C027V, CY7C027VN and CY7C027AV are functionally identical.

 

 

 

 

 

2. CY7C037V and CY7C037AV are functionally identical.

 

 

 

 

 

 

3. I/O8–I/O15for x16 devices; I/O9–I/O17for x18 devices.

 

 

 

 

 

 

4. I/O0–I/O7for x16 devices; I/O0–I/O8for x18 devices.

 

 

 

 

 

 

5. A0–A14for 32K; A0–A15for 64K devices.

 

 

 

 

 

 

 

6. BUSY is an output in master mode and an input in slave mode.

 

 

 

 

 

Cypress Semiconductor Corporation • 198 Champion Court

San Jose, CA 95134-1709

408-943-2600

Document #: 38-06078 Rev. *B

 

Revised December 09, 2008

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Cypress CY7C037V, CY7C037AV manual Features, Logic Block Diagram, Cypress Semiconductor Corporation 198 Champion Court