k7r643684m-fi300 Samsung Semiconductor, Inc., k7r643684m-fi300 Datasheet - Page 3

• Manufacturer Part Number: k7r643684m-fi300
• Description: 2mx36-bit, 4mx18-bit Qdrtm Ii B4 Sram
• Manufacturer: Samsung Semiconductor, Inc.

FUNCTIONAL BLOCK DIAGRAM
K7R643684M
FEATURES
K7R641884M
D(Data in)
ADDRESS
R
W
BW
K
K
C
C
2Mx36-bit, 4Mx18-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 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.
& Lead Free
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.
QDR SRAM and Quad Data Rate comprise a new family of products developed by Cypress, Renesas, IDT, NEC and Samsung technology.
X
4 (or 2)
36 (or 18)
19 (or 20)
LOGIC
DATA
CTRL
REG
ADD
REG
GEN
CLK
(or 20)
19
TM
SELECT OUTPUT CONTROL
II b4 SRAM
72(or 36)
WRITE DRIVER
MEMORY
(4Mx18)
ARRAY
2Mx36
- 3 -
2Mx36 & 4Mx18 QDR
* -F(E)C(I)
Org.
X36
X18
F(E) [Package type]: E-Pb. Free, F-Pb
C(I) [Operating Temperature]: C-Commercial, I-Industrial
72(or 36)
K7R643684M-F(E)C(I)30
K7R643684M-F(E)C(I)25
K7R643684M-FC(I)20
K7R643684M-FC(I)16
K7R641884M-F(E)C(I)30
K7R641884M-F(E)C(I)25
K7R641884M-FC(I)20
K7R641884M-FC(I)16
(or 36)
(or 36)
72
Number
72
Part
(or 72)
144
Rev. 1.3 March 2007
Cycle
Time
3.3
4.0
5.0
6.0
3.3
4.0
5.0
6.0
TM
Access
Time
0.45
0.45
0.45
0.50
0.45
0.45
0.45
0.50
II b4 SRAM
(Echo Clock out)
36 (or 18)
Q (Data Out)
CQ, CQ
Unit
ns
ns
ns
ns
ns
ns
ns
ns
RoHS
Avail.
√
√
√
√
•
•
•
•