Manuals / Cypress / Computer Equipment / Computer Hardware

Cypress CY7C1460AV25, CY7C1464AV25 manual Pin Definitions, Pin Name Type Pin Description, Adv/Ld

Models: CY7C1462AV25 CY7C1460AV25 CY7C1464AV25

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CY7C1460AV25

CY7C1462AV25

CY7C1464AV25

Pin Configurations (continued)

209-ball FBGA (14 x 22 x 1.76 mm) Pinout

CY7C1464AV25 (512K x 72)

 

1

2

3

 

4

 

5

6

 

 

 

7

8

 

 

 

9

 

 

10

11

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A

DQg

DQg

 

A

 

CE2

 

 

 

 

 

 

 

 

 

 

 

3

 

A

DQb

 

 

 

A

ADV/LD

 

A

 

 

 

CE

 

DQb

B

DQg

DQg

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BWSb

 

 

 

 

DQb

 

 

BWSc

 

BWSg

NC

 

 

WE

 

 

BWSf

DQb

 

 

 

 

 

 

 

C

DQg

DQg

 

 

 

 

 

 

NC/576M

 

 

 

1

 

NC

 

 

 

 

 

 

 

 

 

DQb

 

 

BWS

h

 

BWS

d

 

 

CE

 

 

 

BWS

e

 

BWS

a

DQb

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D

DQg

DQg

VSS

 

 

NC/1G

 

 

 

 

 

 

 

NC

 

 

 

NC

VSS

 

 

 

NC

 

 

OE

 

 

DQb

DQb

E

DQPg

DQPc

VDDQ

VDDQ

VDD

 

 

VDD

VDD

 

 

VDDQ

 

VDDQ

DQPf

DQPb

F

DQc

DQc

VSS

 

VSS

VSS

 

NC

VSS

 

VSS

 

VSS

DQf

DQf

G

DQc

DQc

VDDQ

 

VDDQ

VDD

 

NC

VDD

 

VDDQ

 

VDDQ

DQf

DQf

H

DQc

DQc

 

VSS

 

VSS

VSS

 

NC

VSS

 

 

VSS

VSS

DQf

DQf

 

 

 

 

 

 

J

DQc

DQc

 

VDDQ

 

VDDQ

VDD

 

NC

VDD

 

 

VDDQ

 

VDDQ

DQf

DQf

K

NC

NC

CLK

 

NC

VSS

 

 

 

 

 

 

 

 

VSS

 

 

 

 

 

 

 

 

 

 

 

CEN

 

 

 

NC

 

NC

NC

NC

L

DQh

DQh

VDDQ

 

VDDQ

VDD

 

NC

VDD

 

VDDQ

 

VDDQ

DQa

DQa

M

DQh

DQh

VSS

 

VSS

VSS

 

 

NC

VSS

VSS

 

VSS

DQa

DQa

N

DQh

DQh

VDDQ

 

VDDQ

VDD

 

 

NC

VDD

 

VDDQ

 

VDDQ

DQa

DQa

P

DQh

DQh

VSS

 

VSS

VSS

 

 

ZZ

VSS

 

VSS

 

VSS

DQa

DQa

R

DQPd

DQPh

VDDQ

 

VDDQ

VDD

 

 

VDD

VDD

VDDQ

 

VDDQ

DQPa

DQPe

T

DQd

DQd

VSS

 

NC

NC

 

MODE

NC

 

 

 

NC

 

VSS

DQe

DQe

U

DQd

DQd

NC/144M

 

A

NC/72M

 

 

A

A

 

 

 

A

NC/288M

DQe

DQe

V

DQd

DQd

 

A

 

A

A

 

 

A1

A

 

 

 

A

 

A

DQe

DQe

W

DQd

DQd

TMS

 

TDI

A

 

 

A0

A

 

 

TDO

 

TCK

DQe

DQe

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Pin Definitions

 

Pin Name

I/O Type

 

Pin Description

 

 

 

A0

Input-

 

Address Inputs used to select one of the address locations. Sampled at the rising edge of

 

 

 

A1

Synchronous

 

the CLK.

 

 

 

A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

a

Input-

 

Byte Write Select Inputs, active LOW. Qualified with

 

to conduct writes to the SRAM.

 

 

BW

WE

 

BWb

Synchronous

 

Sampled on the rising edge of CLK. BWa controls DQa and DQPa, BWb controls DQb and DQPb,

 

 

BWc

 

 

BWc controls DQc and DQPc, BWd controls DQd and DQPd, BWe controls DQe and DQPe, BWf

 

BWd

 

 

controls DQf and DQPf, BWg controls DQg and DQPg, BWh controls DQh and DQPh.

 

BWe

 

 

 

 

 

 

 

 

 

 

 

BWf

 

 

 

 

 

 

 

 

 

 

BWg

 

 

 

 

 

 

 

 

 

 

BWh

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Input-

 

Write Enable Input, active LOW. Sampled on the rising edge of CLK if

 

is active LOW. This

 

 

 

WE

CEN

 

 

 

 

 

 

 

 

Synchronous

 

signal must be asserted LOW to initiate a write sequence.

 

 

 

 

 

 

 

 

Input-

 

Advance/Load Input used to advance the on-chip address counter or load a new address.

 

ADV/LD

 

 

 

 

 

 

 

 

Synchronous

 

When HIGH (and CEN is asserted LOW) the internal burst counter is advanced. When LOW, a

 

 

 

 

 

 

 

 

 

 

new address can be loaded into the device for an access. After being deselected, ADV/LD should

 

 

 

 

 

 

 

 

 

 

be driven LOW in order to load a new address.

 

 

CLK

Input-

 

Clock Input. Used to capture all synchronous inputs to the device. CLK is qualified with

 

 

 

 

CEN.

 

 

 

 

 

 

 

 

Clock

 

CLK is only recognized if CEN is active LOW.

Document #: 38-05354 Rev. *D

 

 

 

 

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Cypress CY7C1460AV25 Pin Definitions, Pin Name Type Pin Description, Byte Write Select Inputs, active LOW. Qualified with
Page 4 Page 6

CY7C1462AV25, CY7C1460AV25, CY7C1464AV25 specifications

The Cypress CY7C1464AV25, CY7C1460AV25, and CY7C1462AV25 are a family of high-performance synchronous SRAM devices that have been designed for applications requiring fast memory access and low latency. These memory chips are particularly appealing for systems in telecommunications, networking, and embedded applications due to their versatility and robust performance specifications.

One of the standout features of the CY7C1464AV25 series is their large capacities. The CY7C1464AV25 offers a capacity of 4 Megabits (512 K x 8), making it well-suited for applications that demand ample memory while maintaining high-speed operations. In contrast, the CY7C1460AV25 and CY7C1462AV25 provide slightly smaller capacities of 1 Megabit (128 K x 8) and 2 Megabits (256 K x 8) respectively, catering to varying system memory requirements.

All three devices utilize Cypress's advanced synchronous SRAM technology. This enables the chips to support burst read and write modes, allowing for rapid data transfer rates. The CY7C1464AV25 delivers a data access time of as low as 5.5 ns, making it highly efficient for data-intensive applications. Additionally, the standard operating voltage of 2.5V aids in reducing power consumption and improving overall system energy efficiency.

The chips are also characterized by a simple interface and compatibility with common bus protocols, which facilitates easy integration into existing systems. They feature a dual-port architecture, allowing multiple data transfers to occur simultaneously, significantly improving throughput.

With a commercial temperature range, all three devices offer reliability and are suited for a wide range of operating environments. The package options include a compact 44-pin TSOP, allowing for space-saving designs in modern electronics.

In summary, the Cypress CY7C1464AV25, CY7C1460AV25, and CY7C1462AV25 provide a powerful blend of capacity, speed, and efficiency, making them ideal choices for demanding applications in various sectors. Their advanced technologies and versatility make them excellent candidates for enhancing system performance while maintaining low power consumption and ensuring reliable operation in various conditions.