CY7C1352-100AC Cypress Semiconductor Corporation., CY7C1352-100AC Datasheet

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CY7C1352-100AC

Manufacturer Part Number
CY7C1352-100AC
Description
256K x18 Pipelined SRAM with NoBL Architecture
Manufacturer
Cypress Semiconductor Corporation.
Datasheet

Specifications of CY7C1352-100AC

Case
TQFP
Dc
99+
Features
Selection Guide
NoBL and No Bus Latency are trademarks of Cypress Semiconductor Corporation.
ZBT is a trademark of Integrated Device Technology.
Cypress Semiconductor Corporation
Maximum Access Time (ns)
Maximum Operating Current (mA)
Maximum CMOS Standby Current (mA)
• Pin compatible and functionally equivalent to ZBT™
• Supports 143-MHz bus operations with zero wait states
• Internally self-timed output buffer control to eliminate
• Fully registered (inputs and outputs) for pipelined
• Byte Write Capability
• 256K x 18 common I/O architecture
• Single 3.3V power supply
• Fast clock-to-output times
• Clock Enable (CEN) pin to suspend operation
• Synchronous self-timed writes
• Asynchronous output enable
• JEDEC-standard 100-pin TQFP package
• Burst Capability—linear or interleaved burst order
Logic Block Diagram
devices MCM63Z818 and MT55L256L18P
the need to use OE
operation
— Data is transferred on every clock
— 4.0 ns (for 143-MHz device)
— 4.2 ns (for 133-MHz device)
— 5.0 ns (for 100-MHz device)
— 7.0 ns (for 80-MHz device)
BWS
ADV/LD
256K x18 Pipelined SRAM with NoBL™ Architecture
A
Mode
CLK
OE
CEN
[17:0]
WE
[1:0]
CE 1
CE 2
CE
3
18
and WRITE
CONTROL
LOGIC
3901 North First Street
Commercial
Commercial
18
7C1352-143
Functional Description
The CY7C1352 is a 3.3V 256K by 18 synchronous-pipelined
Burst SRAM designed specifically to support unlimited true
back-to-back Read/Write operations without the insertion of
wait states. The CY7C1352 is equipped with the advanced No
Bus Latency™ (NoBL™) logic required to enable consecutive
Read/Write operations with data being transferred on every
clock cycle. This feature dramatically improves the throughput
of the SRAM, especially in systems that require frequent
Read/Write transitions.The CY7C1352 is pin/functionally com-
patible to ZBT™ SRAMs MCM63Z819 and MT55L256L18P.
All synchronous inputs pass through input registers controlled
by the rising edge of the clock. All data outputs pass through
output registers controlled by the rising edge of the clock. The
clock input is qualified by the Clock Enable (CEN) signal, which
when deasserted suspends operation and extends the previ-
ous clock cycle. Maximum access delay from the clock rise is
4.0 ns (143-MHz device).
Write operations are controlled by the four Byte Write Select
(BWS
ducted with on-chip synchronous self-timed write circuitry.
Three synchronous Chip Enables (CE
asynchronous Output Enable (OE) provide for easy bank se-
lection and output three-state control. In order to avoid bus
contention, the output drivers are synchronously three-stated
during the data portion of a write sequence.
.
• Low standby power
CE
256Kx18
MEMORY
450
4.0
5
ARRAY
Data-In REG.
[1:0]
Q
D
) and a Write Enable (WE) input. All writes are con-
18
San Jose
7C1352-133
18
400
4.2
5
18
CA 95134
7C1352-100
18
350
5.0
DQ
5
DP
1
[15:0]
, CE
[1:0]
CY7C1352
2
August 9, 1999
, CE
408-943-2600
7C1352-80
3
300
7.0
) and an
5

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CY7C1352-100AC Summary of contents

Page 1

... The CY7C1352 is a 3.3V 256K by 18 synchronous-pipelined Burst SRAM designed specifically to support unlimited true back-to-back Read/Write operations without the insertion of wait states. The CY7C1352 is equipped with the advanced No Bus Latency™ (NoBL™) logic required to enable consecutive Read/Write operations with data being transferred on every clock cycle ...

Page 2

... SS V DDQ 100-Pin TQFP CY7C1352 CY7C1352 DDQ DDQ ...

Page 3

... When left floating, MODE will default HIGH to an interleaved burst order. Power supply inputs to the core of the device. Should be connected to 3.3V power supply. Power supply for the I/O circuitry. Should be connected to a 3.3V power supply. Ground for the device. Should be connected to ground of the system. 3 CY7C1352 controls DQ and [7:0] 0 ...

Page 4

... Read/Modify/Write sequences, which can be reduced to sim- ple byte write operations. Because the CY7C1352 is a common I/O device, data should not be driven into the device while the outputs are active. The Output Enable (OE) can be deasserted HIGH before present- ing data to the DQ three-state the output drivers ...

Page 5

... Burst Write Accesses The CY7C1352 has an on-chip burst counter that allows the user the ability to supply a single address and conduct up to four Write operations without reasserting the address inputs. ADV/LD must be driven LOW in order to load the initial ad- dress, as described in the Single Write Access section above. ...

Page 6

... IN DDQ Max Device Deselected, or 7.0-ns cycle, 143 MHz > V – 0. DDQ 7.5-ns cycle, 133 MHz 1/t MAX CYC 10-ns cycle, 100 MHz 12.5-ns cycle, 80 MHz 6 CY7C1352 Ambient [8] Temperature DDQ +70 C 3.3V ± 5% Min. Max. Unit 3.135 3.465 3.135 3.465 2.4 0.4 2.0 V 0.3V DD ...

Page 7

... AC Test Loads and Waveforms. Test Conditions MHz 3.3V 3.3V DDQ R=317 3.3V OUTPUT 5 pF R=351 GND INCLUDING JIG AND 1352-2 SCOPE (b) Test Conditions Symbol 7 CY7C1352 Max. Unit [11] ALL INPUT PULSES 3.0V TQFP Typ. Units Notes 28 °C °C ...

Page 8

... This parameter is sampled and not 100% tested. [11,12,13] -143 Min. Max. Min. 7.0 7.5 2.0 2.5 2.0 2.5 2.0 2.0 0.5 0.5 4.0 1.5 1.5 2.0 2.0 0.5 0.5 2.0 2.0 0.5 0.5 2.0 2.0 0.5 0.5 1.7 1.7 0.5 0.5 2.0 2.0 0.5 0.5 1.5 3.5 1.5 1.5 1.5 [10, 12, 13, 14] 4.0 [10, 12, 13, 14 4.0 is less than t and t is less than t to eliminate bus contention between SRAMs when sharing the same EOLZ CHZ CLZ 8 CY7C1352 -133 -100 -80 Max. Min. Max. Min. Max. 10 12.5 3.5 4.0 3.5 4.0 2.2 2.5 0.5 1.0 4.2 5.0 7.0 1.5 1.5 2.2 2.5 0.5 1.0 2.2 2.5 0.5 1.0 2.2 2.5 0.5 1.0 2.0 2.5 0.5 1.0 2.2 2.5 0.5 1.0 3.5 1.5 3.5 1.5 5.0 1.5 1.5 4.2 5.0 7 4.2 5.0 7 ...

Page 9

... In Out Out defines a write cycle (see Write Cycle Description table). [1: and CE . All chip enables need to be active in order to select UNDEFINED = DON’T CARE 9 CY7C1352 t t CENH CENS CEN HIGH blocks all synchronous inputs RA7 t CHZ Out Out ...

Page 10

... AH AS WA2 CHZ Q1+2 Q1+3 D2 Q1+1 Out Out In Out defines a write cycle (see Write Cycle Description table). [1: and CE . All chip enables need to be active in order to select UNDEFINED = DON’T CARE 10 CY7C1352 RA3 t CLZ D2+2 D2+3 D2+1 Out input signals. [1:0] ...

Page 11

... Switching Waveforms (continued) OE Timing Ordering Information Speed (MHz) Ordering Code 143 CY7C1352-143AC 133 CY7C1352-133AC 100 CY7C1352-100AC 80 CY7C1352-80AC Document #: 38 00688 EOHZ Three-state I/O’s t EOLZ Package Name Package Type A101 100-Lead ( 1.4 mm) Thin Quad Flat Pack A101 100-Lead ( 1.4 mm) Thin Quad Flat Pack A101 100-Lead ( ...

Page 12

... The inclusion of Cypress Semiconductor products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress Semiconductor against all charges. CY7C1352 51-85050-A ...

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