Harman Kardon DVD 29/230 Service Manual page 40

harman/kardon
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
64ms refresh period (4K cycle)
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
Elite Semiconductor Memory Technology Inc.
ORDERING INFORMATION
54 Pin TSOP (Type II)
(400mil x 875mil )
PRODUCT NO.
M12L64164A-6T
M12L64164A-7T
Top View
54
1
V
DD
53
DQ 0 2
52
V 3
D D Q
51
DQ 1 4
50
DQ 2 5
6 49
V
S S Q
48
7
DQ 3
47
DQ 4 8
46
V 9
D D Q
45
DQ 5 10
44
DQ 6 11
12 43
V
S S Q
13 42
DQ 7
41
14
V
DD
40
L DQ M 15
39
W E 16
38
C AS 17
18 37
R AS
19 36
CS
35
20
A
13
34
A 21
12
33
A /AP 22
10
32
A 23
0
31
A 24
1
25 30
A
2
29
26
A
3
28
V 27
DD
DVD 29/230 Service Manual
M12L64164A
1M x 16 Bit x 4 Banks
Synchronous DRAM
MAX FREQ.
166MHz
143MHz
V
SS
DQ15
V
S S Q
DQ14
DQ13
V
D D Q
DQ12
DQ11
V
S S Q
DQ10
DQ 9
V
D D Q
DQ 8
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
Publication Date: Mar. 2003
Revision: 1.7
PACKAGE
TSOP II
1/44
Page 40 of 55