CY7C421 Datasheet, PDF (20/21 Pages) Cypress Semiconductor – 512 × 9 Asynchronous FIFO

CY7C421
Document History Page
Document Title: CY7C421, 512 × 9 Asynchronous FIFO
Document Number: 38-06001
Rev.
ECN No.
Orig. of Submission
Change
Date
Description of Change
**
106462
SZV
07/11/01 Change from Spec Number: 38-00079 to 38-06001
*A
122332
RBI
12/30/02 Updated Maximum Ratings (Added power up requirements).
*B
383597
PCX
See ECN Added Pb-Free Logo
Updated Ordering Information (Added in Ordering Information:
CY7C419–10JXC, CY7C419–15JXC, CY7C419-15VXC, CY7C421–10JXC,
CY7C421–15AXC, CY7C421–20JXC, CY7C421–20VXC, CY7C425–10AXC,
CY7C425–10JXC, CY7C425–15JXC, CY7C425–20JXC, CY7C425–20VXC,
CY7C429–10AXC, CY7C429–15JXC, CY7C429–20JXC, CY7C433–10AXC,
CY7C433–10JXC, CY7C433–15JXC, CY7C433–20AXC, CY7C433–20JXC).
*C
2623658 VKN /
12/17/08 Updated Ordering Information (Added CY7C421-20JXI, removed
PYRS
CY7C419/25/29/33 from the ordering information table).
Removed 26-Lead CerDIP, 32-Lead RLCC, 28-Lead molded DIP packages
from the data sheet
Removed Military Information
*D
2714768 VKN / 06/04/2009 Corrected defective Logic Block diagram, Pinouts, and Package diagrams
AESA
*E
2896039 RAME 03/19/2010 Added Contents.
Updated Ordering Information (Removed inactive parts from the data sheet).
Updated Package Diagrams.
Updated links in Sales, Solutions, and Legal Information
*F
3110157 ADMU 12/14/2010 Added Ordering Code Definitions.
*G
3324980 ADMU 07/26/2011 Updated title to read as “CY7C421, 512 × 9 Asynchronous FIFO”.
Updated Features.
Updated Functional Description (Removed information about
CY7C420/424/425/428/429/432/433).
Updated Selection Guide (Removed speed bins -10, -25, -30, -40 and -65).
Updated Electrical Characteristics (Removed speed bins -10, -25, -30, -40 and
-65).
Updated Switching Characteristics (Removed speed bins -10, -25, -30, -40 and
-65).
Updated Architecture (Removed information about
CY7C420/424/425/428/429/432/433).
Updated Package Diagrams.
Added Acronyms and Units of Measure.
Updated in new template.
*H
3697624 SMCH 08/07/2012 Added Pin Definitions.
Updated Architecture (Updated Reading Data from the FIFO (description)).
Document Number: 38-06001 Rev. *H
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