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KM4132G271AQ-10 Datasheet

  • KM4132G271AQ-10

  • 128K x 32Bit x 2 Banks Synchronous Graphic RAM

  • 48頁(yè)

  • SAMSUNG   SAMSUNG

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KM4132G271A
128K x 32Bit x 2 Banks Synchronous Graphic RAM
FEATURES
隆脺
隆脺
CMOS SGRAM
GENERAL DESCRIPTION
The KM4132G271A 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.
隆脺
隆脺
隆脺
隆脺
隆脺
隆脺
隆脺
隆脺
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 QFP
ORDERING INFORMATION
Part NO.
KM4132G271A-8
KM4132G271A-10
KM4132G271A-12
Cycle
time
8ns
10ns
12ns
Clock
f
125MHz
100MHz
83MHz
Access
time@CL=3
7.0ns
7.0ns
9.0ns
Graphics Features
隆脺
隆脺
隆脺
SMRS cycle.
-. Load mask register
-. Load color register
Write Per Bit(Old Mask)
Block Write(8 Columns)
FUNCTIONAL BLOCK DIAGRAM
DQMi
BLOCK
WRITE
CONTROL
LOGIC
CLK
CKE
CS
COLUMN
MASK
DQMi
DQi
(i=0~31)
MASK
WRITE
MASK
REGISTER
COLOR
REGISTER
INPUT BUFFER
REFRESH
COUNTER
CONTROL
LOGIC
MUX
TIMING REGISTER
SENSE
AMPLIFIER
RAS
CAS
WE
DSF
DQMi
128Kx32
CELL
ARRAY
128Kx32
CELL
ARRAY
ROW DECORDER
BANK SELECTION
SERIAL
COUNTER
COLUMN ADDRESS
BUFFER
ROW ADDRESS
BUFFER
ADDRESS REGISTER
CLOCK ADDRESS(A
0
~A
9
)
Rev.0 (August 1997)
OUTPUT BUFFER
LATENCY &
BURST LENGTH
PROGRAMING
REGISTER
COLUMN
DECORDER

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