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| 型號(hào)： | CY7C1218H-133AXC |
| 廠商： | CYPRESS SEMICONDUCTOR CORP |
| 元件分類： | DRAM |
| 英文描述： | 1-Mbit (32K x36) Pipelined Sync SRAM |
| 中文描述： | 32K X 36 CACHE SRAM, 4 ns, PQFP100 |
| 封裝： | 14 X 20 MM, 1.40 MM HEIGHT, LEAD FREE, MS-026, TQFP-100 |
| 文件頁(yè)數(shù)： | 1/16頁(yè) |
| 文件大小： | 363K |
| 代理商： | CY7C1218H-133AXC |
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1-Mbit (32K x36) Pipelined Sync SRAM
CY7C1218H
Cypress Semiconductor Corporation
Document #: 38-05667 Rev. *B
198 Champion Court
San Jose
,
CA 95134-1709
408-943-2600
Revised July 6, 2006
Features
Registered inputs and outputs for pipelined operation
32K × 36 common I/O architecture
3.3V core power supply (V
DD
)
2.5V/3.3V I/O power supply (V
DDQ
)
Fast clock-to-output times
— 3.5 ns (for 166-MHz device)
Provide high-performance 3-1-1-1 access rate
User-selectable burst counter supporting Intel
Pentium interleaved or linear burst sequences
Separate processor and controller address strobes
Synchronous self-timed write
Asynchronous output enable
Available in JEDEC-standard lead-free 100-Pin TQFP
package
“ZZ” Sleep Mode Option
Functional Description
[1]
The CY7C1218H SRAM integrates 32K x 36 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
(CE
1
), depth-expansion Chip Enables (CE
2
and CE
3
), 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 CY7C1218H operates from a +3.3V core power supply
while all outputs may operate either with a +2.5V or +3.3V
supply. All inputs and outputs are JEDEC-standard
JESD8-5-compatible.
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
BWE
GW
CE
1
CE
2
CE
3
OE
ENABLE
REGISTER
OUTPUT
REGISTERS
AMPS
OUTPUT
BUFFERS
E
PIPELINED
ENABLE
INPUT
REGISTERS
A0, A1, A
BW
B
BW
C
BW
D
BW
A
ARRAY
SLEEP
CONTROL
ZZ
A
[1:0]
2
DQ
A
,DQP
A
BYTE
WRITE REGISTER
DQ
B,
DQP
B
BYTE
WRITE REGISTER
DQ
C
,DQP
C
BYTE
WRITE REGISTER
DQ
D,
DQ
D
BYTE
WRITE REGISTER
DQ
A,
DQP
A
BYTE
WRITE DRIVER
DQ
B,
DQP
B
BYTE
WRITE DRIVER
DQ
C
,DQP
C
BYTE
WRITE DRIVER
DQ
D
,DQP
D
BYTE
WRITE DRIVER
DQP
A
DQP
B
DQP
C
DQP
D
DQs
Logic Block Diagram
[+] Feedback
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