DATA SHEET
128M bits SDRAM
EDS1232AATA (4M words × 32 bits)
Specifications
Pin Configurations
• Density: 128M bits
• Organization
⎯ 1M words × 32 bits × 4 banks
• Package: 86-pin plastic TSOP (II)
⎯ Sn-Pb solder
⎯ Sn-Bi solder Lead-free (RoHS compliant)
• Power supply: VDD, VDDQ = 3.3V ± 0.3V
• Clock frequency: 166MHz/133MHz (max.)
• Four internal banks for concurrent operation
• Interface: LVTTL
• Burst lengths (BL): 1, 2, 4, 8, full page
• Burst type (BT):
⎯ Sequential (1, 2, 4, 8, full page)
⎯ Interleave (1, 2, 4, 8)
• /CAS Latency (CL): 2, 3
• Precharge: auto precharge operation for each burst
access
• Refresh: auto-refresh, self-refresh
• Refresh cycles: 4096 cycles/64ms
⎯ Average refresh period: 15.6μs
• Operating ambient temperature range
⎯ TA = 0°C to +70°C
/xxx indicates active low signal.
86-pin Plastic TSOP(II)
L
EO
Pr
Features
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
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
od
• ×32 organization
• Single pulsed /RAS
• Burst read/write operation and burst read/single write
operation capability
• Byte control by DQM
VDD
DQ0
VDDQ
DQ1
DQ2
VSSQ
DQ3
DQ4
VDDQ
DQ5
DQ6
VSSQ
DQ7
NC
VDD
DQM0
/WE
/CAS
/RAS
/CS
A11
BA0
BA1
A10(AP)
A0
A1
A2
DQM2
VDD
NC
DQ16
VSSQ
DQ17
DQ18
VDDQ
DQ19
DQ20
VSSQ
DQ21
DQ22
VDDQ
DQ23
VDD
86
85
84
83
82
81
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
VSS
DQ15
VSSQ
DQ14
DQ13
VDDQ
DQ12
DQ11
VSSQ
DQ10
DQ9
VDDQ
DQ8
NC
VSS
DQM1
NC
NC
CLK
CKE
A9
A8
A7
A6
A5
A4
A3
DQM3
VSS
NC
DQ31
VDDQ
DQ30
DQ29
VSSQ
DQ28
DQ27
VDDQ
DQ26
DQ25
VSSQ
DQ24
VSS
(Top view)
A0 to A11,
BA0, BA1
DQM0 to DQM3 DQ mask enable
CKE
CLK
VDD
VSS
VDDQ
VSSQ
Clock enable
Clock input
Supply voltage
Ground
Supply voltage for DQ
t
uc
Address inputs
Bank select
DQ0 to DQ31 Data input/output
/CS
Chip select
/RAS
Row address strobe
Column address strobe
/CAS
Write enable
/WE
NC
Document No. E0386E60 (Ver. 6.0)
Date Published January 2007 (K) Japan
Printed in Japan
URL: http://www.elpida.com
Ground for DQ
No connection
This product became EOL in March, 2007.
©Elpida Memory, Inc. 2003-2007
