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CY7C1339F-250AI Datasheet(PDF) 1 Page - Cypress Semiconductor

Part # CY7C1339F-250AI
Description  4-Mbit (128K x 32) Pipelined Sync SRAM
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Manufacturer  CYPRESS [Cypress Semiconductor]
Direct Link  http://www.cypress.com
Logo CYPRESS - Cypress Semiconductor

CY7C1339F-250AI Datasheet(HTML) 1 Page - Cypress Semiconductor

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4-Mbit (128K x 32) Pipelined Sync SRAM
CY7C1339F
Cypress Semiconductor Corporation
3901 North First Street
San Jose
, CA 95134
408-943-2600
Document #: 38-05217 Rev. *C
Revised April 09, 2004
Features
• Registered inputs and outputs for pipelined operation
• 128K × 32 common I/O architecture
• 3.3V core power supply
• 2.5V / 3.3V I/O operation
• Fast clock-to-output times
— 2.6 ns (for 250-MHz device)
— 2.6 ns (for 225-MHz device)
— 2.8 ns (for 200-MHz device)
— 3.5 ns (for 166-MHz device)
— 4.0 ns (for 133-MHz device)
— 4.5 ns (for 100-MHz device)
• Provide high-performance 3-1-1-1 access rate
• User-selectable burst counter supporting Intel
Pentiuminterleaved or linear burst sequences
• Separate processor and controller address strobes
• Synchronous self-timed writes
• Asynchronous output enable
• Offered in JEDEC-standard 100-pin TQFP and 119-ball
BGA packages
• “ZZ” Sleep Mode Option
Functional Description[1]
The CY7C1339F SRAM integrates 131,072 x 32 SRAM cells
with advanced synchronous peripheral circuitry and a two-bit
counter for internal burst operation. All synchronous inputs are
gated by registers controlled by a positive-edge-triggered
Clock Input (CLK). The synchronous inputs include all
addresses, all data inputs, address-pipelining Chip Enable
(CE1), depth-expansion Chip Enables (CE2 and CE3), Burst
Control inputs (ADSC, ADSP, and ADV), Write Enables
(BW[A:D], and BWE), and Global Write (GW). Asynchronous
inputs include the Output Enable (OE) and the ZZ pin.
Addresses and chip enables are registered at rising edge of
clock when either Address Strobe Processor (ADSP) or
Address Strobe Controller (ADSC) are active. Subsequent
burst addresses can be internally generated as controlled by
the Advance pin (ADV).
Address, data inputs, and write controls are registered on-chip
to initiate a self-timed Write cycle.This part supports Byte Write
operations (see Pin Descriptions and Truth Table for further
details). Write cycles can be one to four bytes wide as
controlled by the byte write control inputs. GW when active
LOW causes all bytes to be written.
The CY7C1339F operates from a +3.3V core power supply
while all outputs may operate with either a +2.5 or +3.3V
supply. All inputs and outputs are JEDEC-standard
JESD8-5-compatible.
1
Note:
1. For best–practices recommendations, please refer to the Cypress application note System Design Guidelines on www.cypress.com.
ADDRESS
REGISTER
ADV
CLK
BURST
COUNTER
AND
LOGIC
CLR
Q1
Q0
ADSP
ADSC
MODE
BW E
GW
CE1
CE2
CE3
OE
ENABLE
REGISTER
OUTPUT
REGISTERS
SENSE
AM PS
OUTPUT
BUFFERS
E
PIPELINED
ENABLE
INPUT
REGISTERS
A0, A1, A
BWB
BWC
BWD
BW A
MEMORY
ARRAY
DQ s
SLEEP
CONTROL
ZZ
A[1:0]
2
DQA
BYTE
WRITE REGISTER
DQB
BYTE
WRITE REGISTER
DQC
BYTE
WRITE REGISTER
DQD
BYTE
WRITE REGISTER
DQA
BYTE
WRITE DRIVER
DQB
BYTE
WRITE DRIVER
DQC
BYTE
WRITE DRIVER
DQD
BYTE
WRITE DRIVER
Logic Block Diagram


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