k7r321884c Samsung Semiconductor, Inc., k7r321884c Datasheet - Page 3

• Manufacturer Part Number: k7r321884c
• Description: 1mx36-bit, 2mx18 And 4mx9-bit Qdr Ii B4 Sram
• Manufacturer: Samsung Semiconductor, Inc.

FUNCTIONAL BLOCK DIAGRAM
FEATURES
K7R323684C
K7R321884C
K7R320984C
D (Data in)
ADDRESS
R
W
BW
K
K
C
C
1Mx36-bit, 2Mx18 and 4Mx9-bit QDR
• 1.8V+0.1V/-0.1V Power Supply.
• DLL circuitry for wide output data valid window and future fre-
• 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 (x9, x18, x36) function.
• Separate read/write control pin (R and W)
• Simple depth expansion with no data contention.
• Programmable output impedance.
• JTAG 1149.1 compatible test access port.
• 165FBGA(11x15 ball array) with body size of 15mmx17mm.
• Operating in commercial and industrial temperature range.
Notes: 1. Numbers in ( ) are for x18,x9 device
with concurrent read and write operation
quency scaling.
1.8V+0.1V/-0.1V for 1.8V I/O.
rising edges only.
clock-skew and flight-time mismatches.
traceability.
& Lead Free
QDR SRAM and Quad Data Rate comprise a new family of products developed by Cypress, Renesas, IDT, NEC and Samsung technology.
X
18 (or 19,20)
4 (or 2)
36 (or 18)
LOGIC
DATA
CTRL
REG
ADD
REG
GEN
CLK
(or 19,20)
18
SELECT OUTPUT CONTROL
72(or 36)
WRITE DRIVER
1Mx36, 2Mx18 & 4Mx9 QDR
MEMORY
(2Mx18
ARRAY
1Mx36
4Mx9)
TM
- 3 -
II b4 SRAM
* -F(E)C(I)
F(E) [Package type] : E-Pb Free, F-Pb
C(I) [Operating Temperature] : C-Commercial, I-Industrial
72(or 36)
Org.
X36
X18
X9
(or 36)
(or 36)
72
72
K7R323684C-F(E)C(I)33
K7R323684C-F(E)C(I)30
K7R323684C-F(E)C(I)25
K7R321884C-F(E)C(I)33
K7R321884C-F(E)C(I)30
K7R321884C-F(E)C(I)25
K7R320984C-F(E)C(I)33
K7R320984C-F(E)C(I)30
K7R320984C-F(E)C(I)25
Number
Part
(or 72)
Rev. 1.1 August 2006
144
TM
Cycle
Time
II b4 SRAM
3.0
3.3
4.0
3.0
3.3
4.0
3.0
3.3
4.0
(Echo Clock out)
36 (or 18)
Access
Q (Data Out)
CQ, CQ
Time
0.45
0.45
0.45
0.45
0.45
0.45
0.45
0.45
0.45
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns