Harman Kardon dmc230, Service Manual, Page: 61 / 110

ESMT
M12L64164A
Elite Semiconductor Memory Technology Inc.
Publication Date : Mar. 2003
Revision : 1.7 1/44
SDRAM
1M x 16 Bit x 4 Banks
Synchronous DRAM
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
64ms refresh period (4K cycle)
ORDERING INFORMATION
54 Pin TSOP (Type II)
(400mil x 875mil )
PRODUCT NO. MAX FREQ. PACKAGE
M12L64164A-6T 166MHz
M12L64164A-7T 143MHz
TSOP II
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
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
26
27 V
DD
DQ0
V
DD Q
DQ1
DQ2
V
S S Q
DQ3
DQ4
V
DD Q
DQ5
DQ6
V
S S Q
DQ7
V
DD
LDQ M
W E
CAS
RAS
CS
A
13
A
12
A
10
/AP
A
0
A
1
A
2
A
3
V
DD
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28 V
SS
DQ15
V
S S Q
DQ14
DQ13
V
DD Q
DQ12
DQ11
V
S S Q
DQ10
DQ9
V
DD Q
DQ8
V
S S
N C
U D Q M
CLK
CKE
N C
A
11
A
9
A
8
A
7
A
6
A
5
A
4
V
S S
harman/kardon DMC250/230 Service Manual
Page 61 of 110