k4s161622e Samsung Semiconductor, Inc., k4s161622e Datasheet - Page 3

• Manufacturer Part Number: k4s161622e
• Description: 1m X 16 Sdram
• Manufacturer: Samsung Semiconductor, Inc.

K4S161622E
PIN CONFIGURATION (TOP VIEW)
PIN FUNCTION DESCRIPTION
CLK
CS
CKE
A
BA
RAS
CAS
WE
L(U)DQM
DQ
V
V
N.C/RFU
0
DD
DDQ
~ A
0
/V
Pin
~
/V
SS
10
15
SSQ
/AP
System Clock
Chip Select
Clock Enable
Address
Bank Select Address
Row Address Strobe
Column Address Strobe
Write Enable
Data Input/Output Mask
Data Input/Output
Power Supply/Ground
Data Output Power/Ground
No Connection/
Reserved for Future Use
Name
A10/AP
LDQM
V
V
V
V
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
CAS
RAS
V
V
DDQ
DDQ
SSQ
SSQ
WE
CS
BA
A0
A1
A2
A3
DD
DD
Active on the positive going edge to sample all inputs.
Disables or enables device operation by masking or enabling all inputs except
CLK, CKE and L(U)DQM
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.
Row / column addresses are multiplexed on the same pins.
Row address : RA
Selects bank to be activated during row address latch time.
Selects bank for read/write during column address latch time.
Latches row addresses on the positive going edge of the CLK with RAS low.
Enables row access & precharge.
Latches column addresses on the positive going edge of the CLK with CAS low.
Enables column access.
Enables write operation and row precharge.
Latches data in starting from CAS, WE active.
Makes data output Hi-Z, t
Blocks data input when L(U)DQM active.
Data inputs/outputs are multiplexed on the same pins.
Power and ground for the input buffers and the core logic.
Isolated power supply and ground for the output buffers to provide improved noise
immunity.
This pin is recommended to be left No Connection on the device.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
0
~ RA
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
10
SHZ
V
DQ15
DQ14
V
DQ13
DQ12
V
DQ11
DQ10
V
DQ9
DQ8
V
N.C/RFU
UDQM
CLK
CKE
N.C
A9
A8
A7
A6
A5
A4
V
, column address : CA
SS
SSQ
DDQ
SSQ
DDQ
SS
after the clock and masks the output.
Input Function
(0.8 mm PIN PITCH)
(400mil x 825mil)
50PIN TSOP (II)
0
~ CA
7
CMOS SDRAM
Rev 1.1 Jan '03