AS4LC2M8S1
AS4LC2M8S0
AS4LC1M16S1
AS4LC1M16S0
May 2001
Preliminary
®
3.3V 2M × 8/1M × 16 CMOS synchronous DRAM
Features
• Organization
- 1,048,576 words × 8 bits × 2 banks (2M × 8)
11 row, 9 column address
- 524,288 words × 16 bits × 2 banks (1M × 16)
11 row, 8 column address
• All signals referenced to positive edge of clock, fully
synchronous
• Dual internal banks controlled by A11 (bank select)
• High speed
- 143/125/100 MHz
- 7/8/10 ns clock access time
• Low power consumption
- Active: 576 mW max
- Standby: 7.2 mW max, CMOS I/O
• 2048 refresh cycles, 32 ms refresh interval
• 4096 refresh cycles, 64 ms refresh interval
• Auto refresh and self refresh
• PC100 functionality
• Automatic and direct precharge including concurrent
autoprecharge
• Burst read, write/Single write
• Random column address assertion in every cycle, pipelined
operation
• LVTTL compatible I/O
• 3.3V power supply
• JEDEC standard package, pinout and function
- 400 mil, 44-pin TSOP 2 (2M × 8)
- 400 mil, 50-pin TSOP 2 (1M × 16)
• Read/write data masking
• Programmable burst length (1/2/4/8/ full page)
• Programmable burst sequence (sequential/interleaved)
• Programmable CAS latency (1/2/3)
Pin arrangement
Pin designation
TSOP 2
50
TSOP 2
Pin(s)
Description
V
V
SS
V
V
SS
1
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
CC
1
CC
DQ0
DQ1
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
DQ15
DQ14
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
DQ0
DQ7
2
DQM (2M × 8)
UDQM/LDQM (1M × 16)
V
V
3
SSQ
SSQ
Output disable/write mask
V
V
SSQ
SSQ
DQ6
4
DQ1
DQ13
V
V
DQ2
DQ3
5
CCQ
CCQ
DQ12
RA0 – 10
Address inputs CA0 – 7 (×16)
CA0 – 8 (×8)
DQ2
DQ5
6
V
V
V
V
CCQ
DQ4
DQ5
CCQ
7
SSQ
SSQ
A0 to A10
A11
DQ11
DQ10
DQ3
DQ4
8
V
V
CCQ
NC
9
CCQ
V
V
NC
10
11
12
13
14
15
16
17
18
19
20
21
22
SSQ
SSQ
DQ6
DQ7
DQ9
DQ8
NC
WE
CAS
NC
DQM
CLK
Bank address (BA)
V
V
CCQ
CCQ
DQ0 to DQ7 (2M × 8)
DQ0 to DQ15 (1M × 16)
LDQM
Input/output
NC
UDQM
CLK
CKE
NC
A9
A8
A7
A6
A5
RAS
CS
A11
A10
A0
A1
A2
A3
CKE
NC
A9
A8
A7
A6
A5
A4
WE
CAS
RAS
CS
A11
A10
A0
A1
A2
A3
RAS
CAS
Row address strobe
Column address strobe
Write enable
WE
V
V
CC
SS
CS
Chip select
23
24
25
28
27
26
A4
VCC, VCCQ
VSS, VSSQ
CLK
Power (3.3V 0.3V)
Ground
V
V
CC
SS
LEGEND
2M × 8
1M × 16
512K × 16 × 2 banks
2K/4K
Configuration
Refresh Count
Row Address
Bank Address
Column Address
1M × 8 × 2 banks
2K/4K
Clock input
(A0 – A10)
2 (BA)
512 (A0 – A8)
(A0 – A10)
2 (BA)
256 (A0 – A7)
CKE
Clock enable
Selection guide
Symbol
fMax
tAC
–7
143
5.5
2
–8
125
6
–10
100
6
Unit
MHz
ns
Bus frequency (CL = 3)
Maximum clock access time (CL = 3)
Minimum input setup time
Minimum input hold time
tS
2
2
ns
tH
1.0
70
1.0
80
1.0
80
ns
Row cycle time (CL = 3, BL = 1)
tRC
ns
Maximum operating current ([×16], RD or
ICC1
130
1
100
1
100
mA
mA
WR, CL = 3), BL = 2
Maximum CMOS standby current, self refresh
ICC6
1
5/21/01; v.1.1
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