Cypress CY7C1460AV25 manual Scan Register Sizes, Identification Codes, Register Name Bit Size

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CY7C1460AV25

 

 

 

 

 

 

 

 

 

CY7C1462AV25

Scan Register Sizes

 

 

 

 

 

 

 

CY7C1464AV25

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Register Name

 

 

Bit Size (x36)

Bit Size (x18)

 

Bit Size (x72)

 

 

 

 

 

 

 

 

 

 

 

 

Instruction

 

 

 

 

 

3

3

 

3

 

 

 

 

 

 

 

 

 

 

 

 

 

Bypass

 

 

 

 

 

1

1

 

1

 

 

 

 

 

 

 

 

 

 

 

 

 

ID

 

 

 

 

 

32

32

 

32

 

 

 

 

 

 

 

 

 

Boundary Scan Order (165-ball FBGA package)

 

89

89

 

–

 

 

 

 

 

 

 

 

 

Boundary Scan Order (209-ball FBGA package)

 

–

–

 

138

 

 

 

 

 

 

 

 

 

 

 

 

 

Identification Codes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Instruction

 

Code

 

 

 

Description

 

 

 

 

 

 

 

EXTEST

 

000

Captures I/O 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 I/O 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 I/O 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.

 

 

 

 

 

Document #: 38-05354 Rev. *D

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Contents Functional Description FeaturesLogic Block Diagram-CY7C1460AV25 1M x Cypress Semiconductor CorporationSelection Guide Logic Block Diagram-CY7C1462AV25 2M xLogic Block Diagram-CY7C1464AV25 512K x 250 MHz 200 MHz 167 MHz UnitPin Configurations Pin Tqfp Pinout 2M ×CY7C1462AV25 2M × Byte Write Select Inputs, active LOW. Qualified with Pin DefinitionsPin Name Type Pin Description ADV/LDType Pin Description Power supply inputs to the core of the devicePower supply for the I/O circuitry Clock input to the Jtag circuitrySingle Write Accesses Single Read AccessesBurst Read Accesses Burst Write AccessesZZ Mode Electrical Characteristics Interleaved Burst Address Table Mode = Floating or VDDLinear Burst Address Table Mode = GND Function CY7C1462AV25 Partial Write Cycle Description1, 2, 3Function CY7C1460AV25 BW d BW c BW b BW a Function CY7C1464AV25Test Access Port TAP TAP Controller Block Diagram TAP Controller State DiagramDisabling the Jtag Feature Performing a TAP ResetBypass Register TAP Instruction SetOutput Times TAP TimingParameter Description Min Max Unit Clock Set-up Times8V TAP AC Test Conditions TAP DC Electrical Characteristics And Operating Conditions5V TAP AC Test Conditions Identification Register DefinitionsRegister Name Bit Size Scan Register SizesIdentification Codes Instruction Code DescriptionBit# Ball ID Ball Fbga Boundary Scan Order12CY7C1460AV25 1M x 36, CY7C1462AV25 2M x Bit# Ball ID Ball Fbga Boundary Scan Order 12 CY7C1464AV25 512K x Bit# Ball IDOperating Range Electrical Characteristics Over the Operating Range14Maximum Ratings Ambient RangeAC Test Loads and Waveforms Capacitance16Thermal Resistance Switching Characteristics Over the Operating Range 21 250 200 167 Parameter Description Unit Min MaxNOP, Stall and Deselect Cycles23, 24 Switching WaveformsRead/Write/Timing23, 24 ZZ Mode Timing27 DON’T CareOrdering Information 250 Package Diagrams Pin Tqfp 14 x 20 x 1.4 mmBall Fbga 15 x 17 x 1.4 mm Ball Fbga 14 x 22 x 1.76 mm SYT ECN No Issue Date Orig. Description of ChangeDocument History RXU

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.
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