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CY7C1521KV18 Datenblatt(PDF) 3 Page - Cypress Semiconductor

Teilenummer CY7C1521KV18
Bauteilbeschribung  72-Mbit DDR II SRAM Four-Word Burst Architecture
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Hersteller  CYPRESS [Cypress Semiconductor]
Direct Link  http://www.cypress.com
Logo CYPRESS - Cypress Semiconductor

CY7C1521KV18 Datenblatt(HTML) 3 Page - Cypress Semiconductor

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Document Number: 001-00439 Rev. *M
Page 3 of 29
CY7C1521KV18
Contents
Pin Configurations ........................................................... 4
Pin Definitions .................................................................. 5
Functional Overview ........................................................ 7
Read Operations ......................................................... 7
Write Operations ......................................................... 7
Byte Write Operations ................................................. 7
Single Clock Mode ...................................................... 7
DDR Operation ............................................................ 7
Depth Expansion ......................................................... 8
Programmable Impedance .......................................... 8
Echo Clocks ................................................................ 8
PLL .............................................................................. 8
Application Example ........................................................ 8
Truth Table ........................................................................ 9
Burst Address Table ........................................................ 9
Write Cycle Descriptions ............................................... 10
IEEE 1149.1 Serial Boundary Scan (JTAG) .................. 11
Disabling the JTAG Feature ...................................... 11
Test Access Port ....................................................... 11
Performing a TAP Reset ........................................... 11
TAP Registers ........................................................... 11
TAP Instruction Set ................................................... 11
TAP Controller State Diagram ....................................... 13
TAP Controller Block Diagram ...................................... 14
TAP Electrical Characteristics ...................................... 14
TAP AC Switching Characteristics ............................... 15
TAP Timing and Test Conditions .................................. 16
Identification Register Definitions ................................ 17
Scan Register Sizes ....................................................... 17
Instruction Codes ........................................................... 17
Boundary Scan Order .................................................... 18
Power Up Sequence in DDR II SRAM ........................... 19
Power Up Sequence ................................................. 19
PLL Constraints ......................................................... 19
Maximum Ratings ........................................................... 20
Operating Range ............................................................. 20
Electrical Characteristics ............................................... 20
DC Electrical Characteristics ..................................... 20
AC Electrical Characteristics ..................................... 20
Capacitance .................................................................... 21
Thermal Resistance ........................................................ 21
AC Test Loads and Waveforms ..................................... 21
Switching Characteristics .............................................. 22
Switching Waveforms .................................................... 24
Ordering Information ...................................................... 25
Ordering Code Definitions ......................................... 25
Package Diagram ............................................................ 26
Acronyms ........................................................................ 27
Document Conventions ................................................. 27
Units of Measure ....................................................... 27
Document History Page ................................................. 28
Sales, Solutions, and Legal Information ...................... 29
Worldwide Sales and Design Support ....................... 29
Products .................................................................... 29
PSoC® Solutions ...................................................... 29
Cypress Developer Community ................................. 29
Technical Support ..................................................... 29


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