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KM4132G271BTQR-7 Scheda tecnica(PDF) 3 Page - Samsung semiconductor

Il numero della parte KM4132G271BTQR-7
Spiegazioni elettronici  128K x 32bit x 2 Banks Synchronous Graphic RAM LVTTL
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Produttore elettronici  SAMSUNG [Samsung semiconductor]
Homepage  http://www.samsung.com/Products/Semiconductor
Logo SAMSUNG - Samsung semiconductor

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KM4132G271B
CMOS SGRAM
- 3 -
Rev. 2.4 (May 1998)
The KM4132G271B is 8,388,608 bits synchronous high data
rate Dynamic RAM organized as 2 x 131,072 words by 32 bits,
fabricated with SAMSUNG's high performance CMOS technol-
ogy. Synchronous design allows precise cycle control with the
use of system clock.
I/O transactions are possible on every
clock cycle. Range of operating frequencies, programmable
burst length, and programmable latencies allows the same
device to be useful for a variety of high bandwidth, high perfor-
mance memory system applications.
Write per bit and 8 columns block write improves performance in
graphics systems.
• JEDEC standard 3.3V power supply
• LVTTL compatible with multiplexed address
• Dual bank / Pulse RAS
• MRS cycle with address key programs
-. CAS Latency (2, 3)
-. Burst Length (1, 2, 4, 8 & full page)
-. Burst Type (Sequential & Interleave)
• All inputs are sampled at the positive going edge of the
system clock
• Burst Read Single-bit Write operation
• DQM 0-3 for byte masking
• Auto & self refresh
• 16ms refresh period (1K cycle)
• 100 Pin PQFP, TQFP (14 x 20 mm)
• Reverse Type Package offers the best signal routing
Graphics Features
• SMRS cycle.
-. Load mask register
-. Load color register
• Write Per Bit(Old Mask)
• Block Write(8 Columns)
GENERAL DESCRIPTION
FEATURES
FUNCTIONAL BLOCK DIAGRAM
128K x 32Bit x 2 Banks Synchronous Graphic RAM
CLK
CKE
CS
RAS
CAS
WE
DSF
DQMi
BLOCK
WRITE
CONTROL
LOGIC
DQi
128Kx32
CELL
ARRAY
128Kx32
CELL
ARRAY
SERIAL
COUNTER
COLUMN ADDRESS
BUFFER
ROW DECORDER
BANK SELECTION
ADDRESS REGISTER
REFRESH
COUNTER
ROW ADDRESS
BUFFER
MASK
REGISTER
COLOR
REGISTER
MUX
WRITE
CONTROL
LOGIC
COLUMN
MASK
(i=0~31)
DQMi
CLOCK ADDRESS(A0~A9)
DQMi
ORDERING INFORMATION
* ~G271BQR# / ~G271BTQR# : Reverse Type Package
Part NO.
Max Freq.
Interface
Package
KM4132G271BQ(R)-7
143MHz
LVTTL
100 PQFP
KM4132G271BQ(R)-8
125MHz
KM4132G271BQ(R)-10
100MHz
KM4132G271BTQ(R)-7
143MHz
LVTTL
100 TQFP
KM4132G271BTQ(R)-8
125MHz
KM4132G271BTQ(R)-10
100MHz


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