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ESMT
SDRAM
FEATURES
JEDEC standard 3.3V power supply
LVTTL compatible with multiplexed address
Four banks operation
MRS cycle with address key programs
- CAS Latency (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
DQM for masking
Auto & self refresh
μ
15.6
s refresh interval
GENERAL DESCRIPTION
The M12L64164A is 67,108,864 bits synchronous high data rate Dynamic RAM organized as 4 x 1,048,576 words by
16 bits. Synchronous design allows precise cycle controls with the use of system clock I/O transactions are possible on
every clock cycle. Range of operating frequencies, programmable burst length and programmable latencies allow the same
device to be useful for a variety of high bandwidth, high performance memory system applications.
PIN ASSIGNMENT
Top View
V
1
DD
2
D Q0
V
3
D DQ
4
D Q1
D Q2
5
6
V
S SQ
D Q3
7
8
D Q4
V
9
D D Q
D Q5
10
D Q6
11
V
12
S SQ
13
DQ 7
V
14
D D
15
LD QM
W E
16
C AS
17
18
R AS
19
CS
BA0
20
BA1
21
22
A
/AP
1 0
A
23
0
24
A
1
A
25
2
A
26
3
27
V
D D
Elite Semiconductor Memory Technology Inc.
5 4
V
S S
5 3
D Q 1 5
A
5 2
V
S S Q
5 1
D Q 1 4
5 0
D Q 1 3
B
4 9
V
D D Q
4 8
D Q 1 2
C
4 7
D Q 1 1
4 6
V
S S Q
4 5
D Q 1 0
D
4 4
D Q 9
4 3
V
D D Q
4 2
D Q 8
E
4 1
V
S S
4 0
N C
F
3 9
U DQ M
3 8
C L K
3 7
C K E
G
3 6
N C
3 5
A
1 1
H
3 4
A
9
3 3
A
8
3 2
A
7
J
3 1
A
6
3 0
A
5
2 9
A
4
2 8
V
S S
1M x 16 Bit x 4 Banks
Synchronous DRAM
ORDERING INFORMATION
PRODUCT NO.
MAX FREQ. PACKAGE Comments
M12L64164A-5TG
M12L64164A-6TG
M12L64164A-7TG
M12L64164A-5BG
M12L64164A-6BG
M12L64164A-7BG
54 Ball FVBGA (8mmx8mm)
1
2
3
4
DQ15
VSSQ
VSS
DQ14
DQ13
VDDQ
DQ12
DQ11
VSSQ
VDDQ
DQ10
DQ9
DQ8
VSS
NC
UDQM
CLK
CKE
NC
A11
A9
A8
A7
A6
A4
VSS
A5
M12L64164A
200MHz
54 TSOP II
166MHz
54 TSOP II
143MHz
54 TSOP II
200MHz
54 VBGA
166MHz
54 VBGA
143MHz
54 VBGA
5
6
7
8
VDDQ
DQ0
VSSQ
DQ2
VDDQ
DQ4
VSSQ
DQ6
VDD
LDQM
CAS
RAS
BA1
BA0
A0
A1
A3
A2
Publication Date: May 2008
Revision: 3.3
Pb-free
Pb-free
Pb-free
Pb-free
Pb-free
Pb-free
9
VDD
DQ1
DQ3
DQ5
DQ7
WE
CS
A10
VDD
3/46
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