DATA SHEET
64M bits SDRAM
EDS6432AFTA, EDS6432CFTA
(2M words × 32 bits)
Pin Configurations
Description
The EDS6432AFTA, EDS6432CFTA are 64M bits
SDRAMs organized as 524,288 words × 32 bits × 4
banks. All inputs and outputs are synchronized with
the positive edge of the clock.
Supply voltages are 3.3V (EDS6432AFTA) and 2.5V
(EDS6432CFTA).
/xxx indicate active low signal.
86-pin Plastic TSOP(II)
VDD
DQ0
V
SS
1
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
DQ15
VSSQ
DQ14
DQ13
VDDQ
DQ12
DQ11
VSSQ
DQ10
DQ9
VDDQ
DQ8
NC
2
VDDQ
DQ1
3
4
DQ2
5
VSSQ
DQ3
6
7
It is packaged in 86-pin plastic TSOP (II).
DQ4
8
VDDQ
DQ5
9
Features
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
DQ6
VSSQ
DQ7
• 3.3V and 2.5V power supply
• Clock frequency: 166MHz/133MHz (max.)
• Single pulsed /RAS
NC
VDD
DQM0
/WE
VSS
DQM1
NC
/CAS
/RAS
/CS
NC
• ×32 organization
CLK
CKE
A9
• 4 banks can operate simultaneously and
NC
BA0
A8
independently
BA1
A7
A10(AP)
A0
A6
• Burst read/write operation and burst read/single
A5
A1
A2
A4
write operation capability
A3
DQM2
VDD
NC
DQM3
VSS
• 2 variations of burst sequence
Sequential (BL = 1, 2, 4, 8, full page)
Interleave (BL = 1, 2, 4, 8)
• Programmable /CAS latency (CL): 2, 3
• Byte control by DQM
• Refresh cycles: 4096 refresh cycles/64ms
• 2 variations of refresh
NC
DQ16
VSSQ
DQ17
DQ18
VDDQ
DQ19
DQ20
VSSQ
DQ21
DQ22
VDDQ
DQ23
VDD
DQ31
VDDQ
DQ30
DQ29
VSSQ
DQ28
DQ27
VDDQ
DQ26
DQ25
VSSQ
DQ24
VSS
Auto refresh
Self refresh
(Top view)
• TSOP (II) package with lead free solder (Sn-Bi)
RoHS compliant
A0 to A10
BA0, BA1
DQ0 to DQ31 Data-input/output
Address input
Bank select address
/CS
Chip select
/RAS
/CAS
/WE
Row address strobe
Column address strobe
Write enable
DQM0 to DQM3 Input output mask
CKE
CLK
VDD
VSS
VDDQ
VSSQ
NC
Clock enable
Clock input
Power for internal circuit
Ground for internal circuit
Power for DQ circuit
Ground for DQ circuit
No connection
Document No. E0487E50 (Ver. 5.0)
Date Published June 2005 (K) Japan
Printed in Japan
URL: http://www.elpida.com
Elpida Memory, Inc. 2004-2005
ELPIDA [ ELPIDA MEMORY ]
