k7r321884m Samsung Semiconductor, Inc., k7r321884m Datasheet - Page 2

• Manufacturer Part Number: k7r321884m
• Description: 1mx36-bit, 2mx18-bit Qdrtm Ii B4 Sram
• Manufacturer: Samsung Semiconductor, Inc.

FUNCTIONAL BLOCK DIAGRAM
K7R321884M
FEATURES
D(Data in)
ADDRESS
R
W
BW
K
K
C
C
K7R323684M
1Mx36-bit, 2Mx18-bit QDR
• 1.8V+0.1V/-0.1V Power Supply.
• DLL circuitry for wide output data valid window and future
• I/O Supply Voltage 1.5V+0.1V/-0.1V for 1.5V I/O,
• Separate independent read and write data ports
• HSTL I/O
• Full data coherency, providing most current data .
• Synchronous pipeline read with self timed late write.
• Registered address, control and data input/output.
• DDR(Double Data Rate) Interface on read and write ports.
• Fixed 4-bit burst for both read and write operation.
• Clock-stop supports to reduce current.
• Two input clocks(K and K) for accurate DDR timing at clock
• Two input clocks for output data(C and C) to minimize
• Two echo clocks (CQ and CQ) to enhance output data
• Single address bus.
• Byte write (x18, x36) function.
• Sepatate read/write control pin(R and W)
• Simple depth expansion with no data contention.
• Programmable output impenance.
• JTAG 1149.1 compatible test access port.
• 165FBGA(11x15 ball aray FBGA) with body size of 15x17mm
Notes: 1. Numbers in ( ) are for x18 device
with concurrent read and write operation
freguency scaling.
1.8V+0.1V/-0.1V for 1.8V I/O
rising edges only.
clock-skew and flight-time mismatches.
traceability.
QDR SRAM and Quad Data Rate comprise a new family of products developed by Cypress, Hitachi, IDT, Micron, NEC and Samsung techno logy.
X
4 (or 2)
36 (or 18)
18 (or 19)
LOGIC
DATA
CTRL
REG
ADD
REG
CLK
GEN
(or 19)
18
TM
SELECT OUTPUT CONTROL
II b4 SRAM
72(or 36)
WRITE DRIVER
MEMORY
(2Mx18)
ARRAY
1Mx36
- 2 -
1Mx36 & 2Mx18 QDR
Organization
72(or 36)
X36
X18
(or 36)
(or 36)
72
72
K7R323684M-FC25
K7R323684M-FC20
K7R323684M-FC16
K7R321884M-FC25
K7R321884M-FC20
K7R321884M-FC16
Number
Part
(or 72)
144
TM
Cycle
Time
4.0
5.0
6.0
4.0
5.0
6.0
II b4 SRAM
(Echo Clock out)
Access
Time
36 (or 18)
0.45
0.45
0.50
0.45
0.45
0.50
Q(Data Out)
CQ, C Q
Dec. 2003
Rev 2.0
Unit
ns
ns
ns
ns
ns
ns