k7r321882c Samsung Semiconductor, Inc., k7r321882c Datasheet - Page 3

• Manufacturer Part Number: k7r321882c
• Description: 1mx36-bit, 2mx18-bit, 4mx9-bit Qdrtm Ii B2 Sram
• Manufacturer: Samsung Semiconductor, Inc.

FUNCTIONAL BLOCK DIAGRAM
K7R323682C
K7R320982C
FEATURES
K7R321882C
D (Data in)
ADDRESS
R
W
BW
K
K
C
C
1Mx36-bit, 2Mx18-bit, 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, 1.8V+0.1V/
• Separate independent read and write data ports
• HSTL I/O
• Full data coherency, providing most current data.
• Synchronous pipeline read with self timed early write.
• Registered address, control and data input/output.
• DDR (Double Data Rate) Interface on read and write ports.
• Fixed 2-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 FBGA) with body size of 15x17mm
Notes: 1. Numbers in ( ) are for x18 device, x9 device also the same with appropriate adjustments of depth and width.
with concurrent read and write operation
& Lead Free
quency scaling.
-0.1V for 1.8V I/O.
rising edges only.
clock-skew and flight-time mismatches.
traceability.
X
QDR SRAM and Quad Data Rate comprise a new family of products developed by Cypress, Renesas, IDT, NEC and Samsung technology.
36 (or 18)
19 (or 20)
4(or 2)
LOGIC
DATA
CTRL
REG
ADD
REG
GEN
CLK
(or 20)
19
SELECT OUTPUT CONTROL
1Mx36 & 2Mx18 & 4Mx9 QDR
WRITE DRIVER
36 (or 18)
MEMORY
(2Mx18)
ARRAY
1Mx36
TM
- 3 -
II b2 SRAM
* -F(E)C(I)
36 (or 18)
F(E) [Package type]: E-Pb Free, F-Pb
C(I) [Operating Temperature]: C-Commercial, I-Industrial
Org.
X36
X18
X9
K7R323682C-F(E)C(I)30
K7R323682C-F(E)C(I)25
K7R323682C-F(E)C(I)20
K7R321882C-F(E)C(I)30
K7R321882C-F(E)C(I)25
K7R321882C-F(E)C(I)20
K7R320982C-F(E)C(I)30
K7R320982C-F(E)C(I)25
K7R320982C-F(E)C(I)20
(or 36)
72
Number
Part
(or 36)
Rev. 1.1 August 2006
72
TM
Cycle
Time
3.3
4.0
5.0
3.3
4.0
5.0
3.3
4.0
5.0
II b2 SRAM
(Echo Clock out)
Access
36 (or 18)
Q(Data Out)
Time
0.45
0.45
0.45
0.45
0.45
0.45
0.45
0.45
0.45
CQ, CQ
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns