CY7C199CN(2011) 查看數據表（PDF） - Cypress Semiconductor

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CY7C199CN
(Rev.:2011)

256K (32K x 8) Static RAM

Cypress Semiconductor 

CY7C199CN

Contents

Pin Layout and Specifications ........................................ 3

Pin Description ................................................................. 4

Truth Table ........................................................................ 4

Maximum Ratings ............................................................. 4

Operating Range ............................................................... 4

Capacitance ........................................................................................ 5

Thermal Resistance ........................................................................ 5

DC Electrical Characteristics .......................................... 5

AC Test Loads .................................................................. 6

AC Test Conditions .......................................................... 6

AC Electrical Characteristics ..................................................... 7

Data Retention Characteristics ................................................. 7

Timing Waveforms ........................................................... 8

Data Retention Waveform ........................................... 8

Read Cycle 1 ............................................................... 8

Read Cycle 2 ............................................................... 9

Write Cycle 1 (WE controlled) ..............................................10

Write Cycle 2 (CE controlled) ...............................................11

Write Cycle 3 (WE controlled, OE low) .............................12

Ordering Information ...................................................... 13

Ordering Code Definitions ......................................... 13

Package Diagrams .......................................................... 14

Acronyms ........................................................................ 17

Document Conventions ................................................. 17

Units of Measure ....................................................... 17

Document History Page ................................................. 18

Sales, Solutions, and Legal Information ...................... 18

Worldwide Sales and Design Support ....................... 18

Products .................................................................... 18

PSoC Solutions ......................................................... 18

Document #: 001-06435 Rev. *E

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