CY7C1510JV18, CY7C1525JV18

CY7C1512JV18, CY7C1514JV18

Identification Register Definitions

Instruction Field

 

Value

 

Description

CY7C1510JV18

CY7C1525JV18

CY7C1512JV18

CY7C1514JV18

 

 

Revision Number

001

001

001

001

Version number.

(31:29)

 

 

 

 

 

Cypress Device ID

11010011010000100

11010011010001100

11010011010010100

11010011010100100

Defines the type of

(28:12)

 

 

 

 

SRAM.

Cypress JEDEC ID

00000110100

00000110100

00000110100

00000110100

Allows unique

(11:1)

 

 

 

 

identification of

 

 

 

 

 

SRAM vendor.

ID Register

1

1

1

1

Indicates the

Presence (0)

 

 

 

 

presence of an ID

 

 

 

 

 

register.

Scan Register Sizes

Register Name

Bit Size

Instruction

3

 

 

Bypass

1

 

 

ID

32

 

 

Boundary Scan

109

 

 

Instruction Codes

Instruction

Code

Description

EXTEST

000

Captures the input and output ring contents.

 

 

 

IDCODE

001

Loads the ID register with the vendor ID code and places the register between TDI and TDO.

 

 

This operation does not affect SRAM operation.

SAMPLE Z

010

Captures the input and output contents. Places the boundary scan register between TDI and

 

 

TDO. Forces all SRAM output drivers to a High-Z state.

RESERVED

011

Do Not Use: This instruction is reserved for future use.

 

 

 

SAMPLE/PRELOAD

100

Captures the input and output contents. Places the boundary scan register between TDI and

 

 

TDO. Does not affect the SRAM operation.

RESERVED

101

Do Not Use: This instruction is reserved for future use.

 

 

 

RESERVED

110

Do Not Use: This instruction is reserved for future use.

 

 

 

BYPASS

111

Places the bypass register between TDI and TDO. This operation does not affect SRAM

 

 

operation.

Document #: 001-14435 Rev. *C

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Cypress CY7C1512JV18, CY7C1514JV18 manual Identification Register Definitions, Scan Register Sizes, Instruction Codes