K4S64323LF-SN Datasheet, PDF (2/8 Pages) Samsung semiconductor – 2Mx32 Mobile SDRAM 90FBGA

K4S64323LF-S(D)N/U/P
CMOS SDRAM
512K x 32Bit x 4 Banks SDRAM
FEATURES
• 2.5V Power Supply.
• LVCMOS compatible with multiplexed address.
• Four banks operation.
• MRS cycle with address key programs.
-. CAS latency (1, 2 & 3).
-. Burst length (1, 2, 4, 8 & Full page).
-. Burst type (Sequential & Interleave).
• All inputs are sampled at the positive going edge of the system
clock .
• Burst read single-bit write operation.
• DQM for masking.
• Auto & self refresh.
• 64ms refresh period (4K cycle).
• Extended temperature range (-25°C to 85 °C).
Industrial Temperature range (-40°C to 85°C) for low power.
• 90balls FBGA( -SXXX -Pb, -DXXX -Pb Free).
FUNCTIONAL BLOCK DIAGRAM
GENERAL DESCRIPTION
The K4S64323LF is 67,108,864 bits synchronous high data rate
Dynamic RAM organized as 4 x 524,288 words by 32 bits, fabri-
cated with SAMSUNG′s high performance CMOS technology.
Synchronous design allows precise cycle control with the use of
system clock. I/O transactions are possible on every clock cycle.
Range of operating frequencies, programmable burst lengths and
programmable latencies allow the same device to be useful for a
variety of high bandwidth and high performance memory system
applications.
ORDERING INFORMATION
Part No.
Max Freq. Interface Package
K4S64323LF-S(D)N/U/P75 ^{133MHz(CL=3)*1}
105MHz(CL=2)
K4S64323LF-S(D)N/U/P1H 105MHz(CL=2)
K4S64323LF-S(D)N/U/P1L _105MHz(CL=3)^*2
90FBGA
LVCMOS Pb
(Pb Free)
K4S64323LF-S(D)N/U/P15 66MHz(CL=2/3)^*3
-S(D)N ; Low Power, Operating Temp : -25°C~85 °C.
-S(D)U ; Super Low Power, Operating Temp : -25°C~85°C.
-S(D)P ; Low Power, Operating Temp : -40°C~85 °C.
Notes :
1. In case of 55MHz Frequency, CL1 can be supported.
2. In case of 40MHz Frequency, CL1 can be supported.
3. In case of 33MHz Frequency, CL1 can be supported.
Bank Select
CLK
ADD
LCKE
LRAS
LCBR
LWE
LCAS
Data Input Register
512K x 32
512K x 32
512K x 32
512K x 32
Column Decoder
Latency & Burst Length
Programming Register
LWCBR
LWE
LDQM
DQi
LDQM
CLK
CKE
Timing Register
* ^{Samsung Electronics reserves the right to}
CS
RAS
CAS
WE
DQM _{change products or specification without}
notice.
Rev. 1.5 Dec 2002