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CY7C1381KV33 Datasheet(PDF) 19 Page - Cypress Semiconductor

Part No. CY7C1381KV33
Description  18-Mbit (512K × 36/1M × 18) Flow-Through SRAM (With ECC)
Download  34 Pages
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Maker  CYPRESS [Cypress Semiconductor]
Homepage  http://www.cypress.com
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CY7C1381KV33 Datasheet(HTML) 19 Page - Cypress Semiconductor

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CY7C1381KV33/CY7C1381KVE33
CY7C1383KV33/CY7C1383KVE33
Document Number: 001-97888 Rev. *F
Page 19 of 34
Identification Register Definitions
Instruction Field
CY7C1381KV33
(512K × 36)
Description
Revision Number (31:29)
000
Describes the version number.
Device Depth (28:24) [11]
01011
Reserved for internal use.
Device Width (23:18)
165-ball FBGA
000001
Defines the memory type and architecture.
Cypress Device ID (17:12)
100101
Defines the width and density.
Cypress JEDEC ID Code
(11:1)
00000110100
Allows unique identification of SRAM vendor.
ID Register Presence
Indicator (0)
1
Indicates the presence of an ID register.
Scan Register Sizes
Register Name
Bit Size (× 36)
Instruction Bypass
3
Bypass
1
ID
32
Boundary Scan Order (165-ball FBGA package)
89
Instruction Codes
Instruction
Code
Description
EXTEST
000
Captures Input/Output ring contents. Places the boundary scan register between TDI and
TDO. Forces all SRAM outputs to high Z state.
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 operations.
SAMPLE Z
010
Captures Input/Output ring 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 Input/Output ring contents. Places the boundary scan register between TDI and
TDO. Does not affect 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
operations.
Note
11. Bit #24 is “1” in the register definitions for both 2.5 V and 3.3 V versions of this device.


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