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K4D553238F-JC40 Datasheet(PDF) 3 Page - Samsung semiconductor

Part # K4D553238F-JC40
Description  256Mbit GDDR SDRAM
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Manufacturer  SAMSUNG [Samsung semiconductor]
Direct Link  http://www.samsung.com/Products/Semiconductor
Logo SAMSUNG - Samsung semiconductor

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256M GDDR SDRAM
K4D553238F-JC
- 3 -
Rev 1.0 (Mar. 2004)
The K4D553238F is 268,435,456 bits of hyper synchronous data rate Dynamic RAM organized as 4 x 2,097,152 words by
32 bits, fabricated with SAMSUNGs high performance CMOS technology. Synchronous features with Data Strobe allow
extremely high performance up to 2.8GB/s/chip. I/O transactions are possible on both edges of the clock cycle. Range of
operating frequencies, programmable burst length and programmable latencies allow the device to be useful for a variety
of high performance memory system applications.
• 2.5V + 5% power supply for device operation
• 2.5V + 5% power supply for I/O interface
• SSTL_2 compatible inputs/outputs
• 4 banks operation
• MRS cycle with address key programs
-. Read latency 3, 4 (clock)
-. Burst length (2, 4 and 8)
-. Burst type (sequential & interleave)
• All inputs except data & DM are sampled at the positive
going edge of the system clock
• Differential clock input
• No Wrtie-Interrupted by Read Function
GENERAL DESCRIPTION
FEATURES
• 4 DQS’s ( 1DQS / Byte )
• Data I/O transactions on both edges of Data strobe
• DLL aligns DQ and DQS transitions with Clock transition
• Edge aligned data & data strobe output
• Center aligned data & data strobe input
• DM for write masking only
• Auto & Self refresh
• 32ms refresh period (4K cycle)
• 144-Ball FBGA
• Maximum clock frequency up to 350MHz
• Maximum data rate up to 700Mbps/pin
FOR 2M x 32Bit x 4 Bank GDDR SDRAM
2M x 32Bit x 4 Banks Graphic Double Data Rate Synchronous DRAM
with Bi-directional Data Strobe and DLL
ORDERING INFORMATION
1. K4D553238F-EC is the Lead Free package part number
2. For the K4D553238F-JC2A, VDD & VDDQ =2.8V + 0.1V
Part NO.
Max Freq.
Max Data Rate
Interface
Package
K4D553238F-JC2A
350MHz
700Mbps/pin
SSTL_2
144-Ball FBGA
K4D553238F-JC33
300MHz
600Mbps/pin
K4D553238F-JC36
275MHz
550Mbps/pin
K4D553238F-JC40
250MHz
500Mbps/pin
K4D553238F-JC50
200MHz
400Mbps/pin


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