cym9271b Cypress Semiconductor Corporation., cym9271b Datasheet

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cym9271b

Manufacturer Part Number
cym9271b
Description
Sram Module
Manufacturer
Cypress Semiconductor Corporation.
Datasheet
Features
Functional Description
The CYM9270, CYM9271B, CYM9272A, and the CYM9273
are high-performance synchronous memory modules orga-
nized as 64K(9270), 128K(9271B), 256K(9272A), 512K(9273)
by 36 bits. These modules are constructed using either 128K
x 18 SRAMs (9270, 9271B, 9272A) or 256K x 18 SRAMs
Cypress Semiconductor Corporation
Logic Block Diagram - CYM9270
• Operates at 50 MHz
• Uses 64K x 18 / 128K x 18 or 256K x 18 high-performance
• 144-Position Angled DIMM from Berg p/n 61178
• 3.3V inputs/data outputs
synchronous SRAMs
64Kx36
A[15:0]
WE
BW[0:3]
ADSP
CLK[0:1]
OE
CS
PD
GND
1
PD
NC
0
Bank0
3901 North First Street
OE
CS
(9273) in plastic surface mount packages on an epoxy lami-
nate board with pins. The modules are designed to be incor-
porated into large memory arrays.
The modules are configured as single banks or multiple banks
depending on the SRAM used to make the module. Separate
clock are provided for each of the banks. Separate clocks are
provided for each of the SRAMs.
Multiple ground pins and on-board decoupling capacitors en-
sure high performance with maximum noise immunity.
All components on the cache modules are surface mounted on
a multi-layer epoxy laminate (FR-4) substrate. The contact
pins are plated with 150 micro-inches of nickel covered by 30
micro-inches of gold flash.
BWE
WEH
A
CS
WEL
SGW
OE
ADSC
15:0
(2) 128K x 18 SRAMs
Bank 0
128K x 36 SRAM Module
256K x 36 SRAM Module
512K x 36 SRAM Module
San Jose
64K x 36 SRAM Module
D[0:15]
DQ[0:1]
CLK
CLK[0:1]
CA 95134
CYM9271B
CYM9272A
D[0:31]
DQ[0:3]
CYM9270
CYM9273
9270
408-943-2600
May 19, 1999

Related parts for cym9271b

cym9271b Summary of contents

Page 1

... SRAMs • 144-Position Angled DIMM from Berg p/n 61178 • 3.3V inputs/data outputs Functional Description The CYM9270, CYM9271B, CYM9272A, and the CYM9273 are high-performance synchronous memory modules orga- nized as 64K(9270), 128K(9271B), 256K(9272A), 512K(9273 bits. These modules are constructed using either 128K ...

Page 2

... Logic Block Diagram - CYM9271B/CYM9272A A[16:0] WE OE[0:1] CS[0:1] BW[0:3] ADSP CLK[0: Bank0 NC GND 128Kx36 GND GND Bank0 and Bank1 256KX36 (2) 128K x 18 SRAMs A 16:0 SGW OE0 D[0:15] OE CS0 CS DQ[0:1] BWE WEH WEL ADSC CLK Bank0 CLK[0:1] (2) 128K x 18 SRAMs A 16:0 SGW OE1 D[0:15] OE CS1 DQ[0:1] CS BWE WEH WEL ADSC CLK ...

Page 3

... Logic Block Diagram - CYM9273 A[17:0] WE OE[0:1] CS[0:1] BW[0:3] ADSP CLK[0: Bank0 and 1 512KX36 NC NC (2) 256K x 18 SRAMs A 17:0 SGW OE0 D[0:15] OE CS[0] CS DQ[0:1] BWE WEH WEL ADSC CLK Bank0 CLK[0:1] (2) 256K x 18 SRAMs A 17:0 SGW OE1 D[0:15] OE CS[1] CS DQ[0:1] BWE WEH WEL ADSC CLK Bank1 CLK[2:3] 3 CYM9270 CYM9271B CYM9272A CYM9273 D[0:31] DQ[0:3] 9273 ...

Page 4

... 127 GND GND 128 D 129 130 131 D D 132 25 24 133 134 135 136 137 138 V V CC3 CC3 139 140 142 141 2 3 144 GND 143 GND 4 CYM9271B CYM9272A CYM9273 ...

Page 5

... D[31:0] DQ[3:0] CLK[0:3] NC RSVD Presence Detect Pins CYM9270 – 64K x 36 CYM9271B – 128K x 36 CYM9272A – 256K x 36 CYM9273 – 512K x 36 Description 3V Supply Ground Addresses from processor Address strobe from the processor Output Enables for each of the banks Byte writes ...

Page 6

... 5.0V CC 9271B 9272A 9273 T = 25° MHz, 9270 5.0V CC 9271B 9272A 9273 T = 25° MHz, 9270 5.0V CC 9271B 9272A 9273 6 CYM9270 CYM9271B CYM9272A CYM9273 V CC 0°C to +70°C 3.3V 5% Min. Max. Unit 2 0 –0.3 0.8 V 2.4 V 0.4 V 350 mA 500 mA 1000 mA 1200 mA Max ...

Page 7

... CCQ OUTPUT 3. GND INCLUDING JIGAND [2] SCOPE (b) CYM9270 CYM9271B Min. Max. Min 0.5 0.5 10 3.1 3.1 0.5 0.5 3.3 3.3 0.5 3.1 3.1 0.5 0 and R2=351 . 7 CYM9271B CYM9272A CYM9273 ALL INPUT PULSES 90% 90% 10% 10 CYM9272A CYM9273 Max. Min. Max. Min. Max 0.5 0.5 10.3 10.3 10 3.1 3.1 0.5 0.5 3.3 3.3 0.5 0.5 3.1 3.1 0.5 0 ...

Page 8

... OE is LOW throughout this operation. 6. ADSP has no effect on ADV, WL, and HIGH CSS CSH ADS ADSH t t WES WEH t CDV CSS CSH ADS ADSH t WEH CYM9270 CYM9271B CYM9272A CYM9273 t CYC t DOH ...

Page 9

... ADS t WEH t WEOZ Package Name Package Type PM45 144-Pin Dual-Readout SIMM PM45 144-Pin Dual-Readout SIMM PM46 144-Pin Dual-Readout SIMM PM46 144-Pin Dual-Readout SIMM 9 CYM9270 CYM9271B CYM9272A CYM9273 t EOV ADSH t CSH t CSOZ ADSH t WEOV Operating Description Range Sync 64K x 36 Commercial Sync 128K x 36 ...

Page 10

... 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. 144-Pin Single-Sided DIMM PM45 144-Pin Dual-Sided DIMM PM46 CYM9271B CYM9272A CYM9273 ...

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