K7S3236U4C Datasheet, PDF (3/20 Pages) Samsung semiconductor – 1Mx36 & 2Mx18 QDR II+ b4 SRAM

K7S3236U4C
K7S3218U4C
1Mx36 & 2Mx18 QDR^TM II+ b4 SRAM
1Mx36-bit, 2Mx18-bit QDR^TM II+ b4 SRAM
FEATURES
• 1.8V+0.1V/-0.1V Power Supply.
• DLL circuitry for wide output data valid window and future fre-
quency scaling.
• I/O Supply Voltage 1.5V+0.1V/-0.1V
• Separate independent read and write data ports
with concurrent read and write operation
• HSTL I/O
• Full data coherency, providing most current data .
• Synchronous pipeline read with self timed late write.
• Read latency: 2.5 clock cycles
• 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
rising edges only.
• Two echo clocks (CQ and CQ) to enhance output data
traceability.
• Data Valid pin(QVLD) supported
• Single address bus.
• Byte write (x18, x36) function.
• Separate read/write control pin(R and W)
• Simple depth expansion with no data contention.
• Programmable output impedance(ZQ).
• JTAG 1149.1 compatible test access port.
• 165FBGA(11x15 ball array) with body size of 15mmx17mm.
Organiza-
tion
Part
Number
Cycle
Time
Access
Time
Unit
K7S3236U4C-F(E)C(I)45 2.22 0.45 ns
X36
K7S3236U4C-F(E)C(I)40 2.5 0.45 ns
K7S3236U4C-F(E)C(I)33 3.0 0.45 ns
K7S3236U4C-F(E)C(I)45 2.22 0.45 ns
X18
K7S3218U4C-F(E)C(I)40 2.5 0.45 ns
K7S3218U4C-F(E)C(I)33 3.0 0.45 ns
* -F(E)C(I)
F(E) [Package type] : E-Pb Free, F-Pb
C(I) [Operating Temperature] : C-Commercial, I-Industrial
FUNCTIONAL BLOCK DIAGRAM
36 (or 18) _DATA
D(Data in)
REG
18 (or 19) ADD
ADDRESS
REG
R
W
BWX
K
K
Doff
4 (or 2)
CTRL
LOGIC
CLK
GEN
18
(or 19)
72(or 36)
72(or 36)
WRITE DRIVER
1Mx36
(2Mx18)
MEMORY
ARRAY
72
(or 36)
72
(or 36)
SELECT OUTPUT CONTROL
144
(or 72)
QVLD
36 (or 18)
Q(Data Out)
CQ, CQ
(Echo Clock out)
Notes: 1. Numbers in ( ) are for x18 device
QDR SRAM and Quad Data Rate comprise a new family of products developed by Cypress, Renesas, IDT, NEC and Samsung technology.
Rev. 1.0 August 2008
-3-