Contents
Product Selection Guide Density Mbit 32K x 64K x 128K x
Functional Description
176TQFP 172FBGA
Cypress Semiconductor Corporation 198 Champion Court
True
Logic Block Diagram
RAM Array
Mirror Reg
Ball BGA Top View
Pin Configurations
CY7C0853AV
CY7C0850AV CY7C0851AV CY7C0852AV
Pin Definitions
Operation Description
Master Reset
Mailbox Interrupts
Address Counter and Mask Register Operations
Counter Interrupt
Mask Reset Operation
Retransmit
Mask Load Operation
CLK
Cnten ADS Cntrst Mrst
Programmable Counter-Mask Register Operation 1
Ieee 1149.1 Serial Boundary Scan Jtag
Performing a TAP Reset
Maximum Ratings
Electrical Characteristics
Operating Range
Capacitance
Normal Load Load Three-state Delay Load
Switching Characteristics
Master Reset Timing
Port to Port Delays
Parameter Description 167/133/100 Unit Min
Jtag Timing
Master Reset
Switching Waveforms
Bank Select Read 26
Read-to-Write-to-Read OE Controlled 25, 28, 30
Write with Address Counter Advance
Disabled-to-Write-to-Read-to-Write-to-Read
Read-to-Readback-to-Read-to-Read R/W = High
Counter Reset 32
Readback State of Address Counter or Mask Register35, 36, 37
LeftPort LPort Write to RightPort RPort Read39, 40
Counter Interrupt and Retransmit 34, 42, 43, 44
CLK
256K × 36 9M 3.3V Synchronous CY7C0853AV Dual-Port Sram
Ordering Information
128K × 36 4M 3.3V Synchronous CY7C0852AV Dual-Port Sram
64K × 36 2M 3.3V Synchronous CY7C0851AV Dual-Port Sram
Ball Fbga 15 x 15 x 1.25 mm
Package Diagrams
Pin Thin Quad Flat Pack 24 × 24 × 1.4 mm
Submis Orig. Description of Change Sion Date
Document History
USB
Sales, Solutions, and Legal Information
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