900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf




Cypress Semiconductor Electronic Components Datasheet

CY2318ANZ Datasheet

3.3V SDRAM Buffer for Desktop PCs with 4 DIMMs

No Preview Available !

www.DataSheet4U.com
Features
• One input to 18 output buffer/driver
• Supports up to four SDRAM DIMMs
• Two additional outputs for feedback
• Serial interface for individual output control
• 150ps typical output-output skew
• Up to 100 MHz operation
• Dedicated OE pin for testing
• Space-saving 48-pin SSOP package
• 3.3V operation
CY2318ANZ
18 Output, 3.3V SDRAM Buffer for
Desktop PCs with 4 DIMMs
Functional Description
The CY2318ANZ is a 3.3V buffer designed to distribute
high-speed clocks in PC applications. The part has 18 outputs,
16 of which can be used to drive up to four SDRAM DIMMs,
and the remaining can be used for external feedback to a PLL.
The device operates at 3.3V and outputs can run up to 100
MHz, thus making it compatible with Pentium II® processors.
The CY2318ANZ can be used in conjunction with the CY2280,
CY2281, CY2282 or similar clock synthesizer for a complete
Pentium II motherboard solution.
The CY2318ANZ also includes a serial interface which can
enable or disable each output clock. On power-up, all output
clocks are enabled (internal pull up). A separate Output
Enable pin facilitates testing on ATE.
Block Diagram
BUF_IN
SDATA
SCLOCK
Serial Interface
Decoding
OE
SDRAM0
SDRAM1
SDRAM2
SDRAM3
SDRAM4
SDRAM5
SDRAM6
SDRAM7
SDRAM8
SDRAM9
SDRAM10
SDRAM11
SDRAM12
SDRAM13
SDRAM14
SDRAM15
SDRAM16
SDRAM17
Pin Configuration
NC
NC
VDD
SDRAM0
SDRAM1
VSS
VDD
SDRAM2
SDRAM3
VSS
BUF_IN
VDD
SDRAM4
SDRAM5
VSS
VDD
SDRAM6
SDRAM7
VSS
VDD
SDRAM16
VSS
VDDIIC
SDATA
SSOP
Top View
1 48
2 47
3 46
4 45
5 44
6 43
7 42
8 41
9 40
10 39
11 38
12 37
13 36
14 35
15 34
16 33
17 32
18 31
19 30
20 29
21 28
22 27
23 26
24 25
NC
NC
VDD
SDRAM15
SDRAM14
VSS
VDD
SDRAM13
SDRAM12
VSS
OE
VDD
SDRAM11
SDRAM10
VSS
VDD
SDRAM9
SDRAM8
VSS
VDD
SDRAM17
VSS
VSSIIC
SCLOCK
Cypress Semiconductor Corporation • 3901 North First Street • San Jose, CA 95134 • 408-943-2600
Document #: 38-07181 Rev. *B
Revised January 19, 2005
DataSheet4 U .com


Cypress Semiconductor Electronic Components Datasheet

CY2318ANZ Datasheet

3.3V SDRAM Buffer for Desktop PCs with 4 DIMMs

No Preview Available !

www.DataSheet4U.com
CY2318ANZ
Pin Summary
Name
Pins
Description
VDD
VSS
VDDIIC
VSSIIC
BUF_IN
OE
SDATA
SCLK
3, 7, 12, 16, 20, 29, 33, 37, 42, 46 3.3V Digital voltage supply
6, 10, 15, 19, 22, 27, 30, 34, 39, 43 Ground
23 Serial interface voltage supply
26 Ground for serial interface
11 Input clock (5V Tolerant)
38 Output Enable (active HIGH), Three-state outputs when low[1]
24 Serial data input[1]
25 Serial clock input[1]
SDRAM [0–3] 4, 5, 8, 9
SDRAM byte 0 clock outputs
SDRAM [4–7] 13, 14, 17, 18
SDRAM byte 1 clock outputs
SDRAM [8–11] 31, 32, 35, 36
SDRAM byte 2 clock outputs
SDRAM [12–15] 40, 41, 44, 45
SDRAM byte 3 clock outputs
SDRAM [16–17] 21, 28
SDRAM clock outputs usable for feedback
N/C 1, 2, 47, 48
Reserved for future modifications, do not connect in system
Note:
1. Internal pull-up resistor to VDD (value > 100 kohms)
Device Functionality
OE SDRAM [0–17]
0 Hi-Z
1 1 x BUF_IN
Document #: 38-07181 Rev. *B
DataSheet4 U .com
Page 2 of 9


Part Number CY2318ANZ
Description 3.3V SDRAM Buffer for Desktop PCs with 4 DIMMs
Maker Cypress Semiconductor
Total Page 9 Pages
PDF Download

CY2318ANZ Datasheet PDF

View PDF for Mobile








Similar Datasheet

1 CY2318ANZ 3.3V SDRAM Buffer for Desktop PCs with 4 DIMMs
Cypress Semiconductor





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy