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K4S641632H Datasheet(PDF) 6 Page - Samsung semiconductor

Part # K4S641632H
Description  64Mb H-die SDRAM Specification 54 TSOP-II with Pb-Free (RoHS compliant)
Download  14 Pages
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Manufacturer  SAMSUNG [Samsung semiconductor]
Direct Link  http://www.samsung.com/Products/Semiconductor
Logo SAMSUNG - Samsung semiconductor

K4S641632H Datasheet(HTML) 6 Page - Samsung semiconductor

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SDRAM 64Mb H-die (x4, x8, x16)
CMOS SDRAM
Rev. 1.3 August 2004
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PIN CONFIGURATION (Top view)
54Pin TSOP (II)
(400mil x 875mil)
(0.8 mm Pin pitch)
PIN FUNCTION DESCRIPTION
Pin
Name
Input Function
CLK
System clock
Active on the positive going edge to sample all inputs.
CS
Chip select
Disables or enables device operation by masking or enabling all inputs except
CLK, CKE and DQM
CKE
Clock enable
Masks system clock to freeze operation from the next clock cycle.
CKE should be enabled at least one cycle prior to new command.
Disable input buffers for power down in standby.
A0 ~ A11
Address
Row/column addresses are multiplexed on the same pins.
Row address : RA0 ~ RA11,
Column address : (x4 : CA0 ~ CA9, x8 : CA0 ~ CA8 , x16 : CA0 ~ CA7)
BA0 ~ BA1
Bank select address
Selects bank to be activated during row address latch time.
Selects bank for read/write during column address latch time.
RAS
Row address strobe
Latches row addresses on the positive going edge of the CLK with RAS low.
Enables row access & precharge.
CAS
Column address strobe
Latches column addresses on the positive going edge of the CLK with CAS low.
Enables column access.
WE
Write enable
Enables write operation and row precharge.
Latches data in starting from CAS, WE active.
DQM
Data input/output mask
Makes data output Hi-Z, tSHZ after the clock and masks the output.
Blocks data input when DQM active.
DQ0 ~ X15
Data input/output
Data inputs/outputs are multiplexed on the same pins.
VDD/VSS
Power supply/ground
Power and ground for the input buffers and the core logic.
VDDQ/VSSQ
Data output power/ground
Isolated power supply and ground for the output buffers to provide improved noise
immunity.
N.C/RFU
No connection
/reserved for future use
This pin is recommended to be left No Connection on the device.
x16
x8
x4
x16
x8
x4
VDD
DQ0
VDDQ
DQ1
DQ2
VSSQ
DQ3
DQ4
VDDQ
DQ5
DQ6
VSSQ
DQ7
VDD
LDQM
WE
CAS
RAS
CS
BA0
BA1
A10/AP
A0
A1
A2
A3
VDD
VSS
DQ15
VSSQ
DQ14
DQ13
VDDQ
DQ12
DQ11
VSSQ
DQ10
DQ9
VDDQ
DQ8
VSS
N.C/RFU
UDQM
CLK
CKE
N.C
A11
A9
A8
A7
A6
A5
A4
VSS
VDD
N.C
VDDQ
N.C
DQ0
VSSQ
N.C
N.C
VDDQ
N.C
DQ1
VSSQ
N.C
VDD
N.C
WE
CAS
RAS
CS
BA0
BA1
A10/AP
A0
A1
A2
A3
VDD
VSS
N.C
VSSQ
N.C
DQ3
VDDQ
N.C
N.C
VSSQ
N.C
DQ2
VDDQ
N.C
VSS
N.C/RFU
DQM
CLK
CKE
N.C
A11
A9
A8
A7
A6
A5
A4
VSS
VDD
DQ0
VDDQ
N.C
DQ1
VSSQ
N.C
DQ2
VDDQ
N.C
DQ3
VSSQ
N.C
VDD
N.C
WE
CAS
RAS
CS
BA0
BA1
A10/AP
A0
A1
A2
A3
VDD
VSS
DQ7
VSSQ
N.C
DQ6
VDDQ
N.C
DQ5
VSSQ
N.C
DQ4
VDDQ
N.C
VSS
N.C/RFU
DQM
CLK
CKE
N.C
A11
A9
A8
A7
A6
A5
A4
VSS


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