AS4SD2M32 Datasheet, PDF (1/52 Pages) Austin Semiconductor – 512K x 32 x 4 Banks (64-Mb) Synchronous SDRAM

Austin Semiconductor, Inc.
SDRAM
AS4SD2M32
512K x 32 x 4 Banks (64-Mb)
Synchronous SDRAM
FEATURES
• Full Military temp (-55°C to 125°C) processing available
• Configuration: 512K x 32 x 4 banks
• Fully synchronous; all signals registered on positive
edge of system clock
• Internal pipelined operation; column address can be
changed every clock cycle
• Internal banks for hiding row access/precharge
• Programmable burst lengths: 1, 2, 4, 8 or full page
• Auto Precharge, includes CONCURRENT AUTO
PRECHARGE and Auto Refresh Modes
• Self Refresh Mode (IT & ET)
• 64ms, 4,096 cycle refresh (IT & ET)
• <16ms 4,096 cycle refresh (XT)
• WRITE Recovery (t_WR = “2 CLK”)
• LVTTL-compatible inputs and outputs
• Single +3.3V ±0.3V power supply
OPTIONS
• Plastic TSOPII-EX
MARKING
DGX
• Timing (Cycle Time)
6.0ns CL=3
-6
7.0ns CL=3
-7
7.5ns CL=3
-7.5
• Operating Temperature Ranges
-Industrial Temp (-40°C to 85° C)
-Enhanced Temp (-45°C to +105°C)
-Extended Temp (-55°C to 125°C)
IT
ET
XT***
PIN ASSIGNMENT
(Top View)
86-Pin TSOPII
VDD
1
DQ0
2
VDDQ
3
DQ1
4
DQ2
5
VSSQ
6
DQ3
7
DQ4
8
VDDQ
9
DQ5
10
DQ6
11
VSSQ
12
DQ7
13
NC
14
VDD
15
DQM0
16
WE
17
CAS
18
RAS
19
CS
20
NC
21
BA0
22
BA1
23
A10
24
A0
25
A1
26
A2
27
DQM2
28
VDD
29
NC
30
DQ16
31
VSSQ
32
DQ17
33
DQ18
34
VDDQ
35
DQ19
36
DQ20
37
VSSQ
38
DQ21
39
DQ22
40
VDDQ
41
DQ23
42
VDD
43
86
VSS
85
DQ15
84
VSSQ
83
DQ14
82
DQ13
81
VDDQ
80
DQ12
79
DQ11
78
VSSQ
77
DQ10
76
DQ9
75
VDDQ
74
DQ8
73
NC
72
VSS
71
DQM1
70
NC
69
NC
68
CLK
67
CKE
66
A9
65
A8
64
A7
63
A6
62
A5
61
A4
60
A3
59
DQM3
58
VSS
57
NC
56
DQ31
55
VDDQ
54
DQ30
53
DQ29
52
VSSQ
51
DQ28
50
DQ27
49
VDDQ
48
DQ26
47
DQ25
46
VSSQ
45
DQ24
44
VSS
2M x 32
Configuration
512K x 32 x 4
Refresh Count
4K
Row Addressing
4K (A0-A10)
Bank Addressing
4 (BA0, BA1)
Column Addressing
256 (A0-A7)
KEY TIMING PARAMETERS
SPEED CLOCK ACCESS TIME
GRADE FREQUENCY CL = 2** CL = 3**
**CL = CAS (READ) latency
***Consult Factory
SETUP
TIME
1.5ns
HOLD
TIME
0.8ns
For more products and information
please visit our web site at
www.austinsemiconductor.com
AS4SD2M32
Rev. 1.0 1/08
Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.
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