AS4C256K16F0-50JC Alliance Semiconductor, AS4C256K16F0-50JC Datasheet

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AS4C256K16F0-50JC

Manufacturer Part Number
AS4C256K16F0-50JC
Description
5V 256K x 16 CM0S DRAM (fast page mode), 50ns RAS access time
Manufacturer
Alliance Semiconductor
Datasheet

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Part Number
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Price
Part Number:
AS4C256K16F0-50JC
Manufacturer:
ALLIANCE
Quantity:
900
Part Number:
AS4C256K16F0-50JC
Manufacturer:
ALLIANCE
Quantity:
20 000
Features
• Organization: 262,144 words × 16 bits
• High speed
• Low power consumption
• Fast page mode
• AS4C256K16FO-50 timings
Pin arrangement
Selection guide
Maximum RAS access time
Maximum column address
access time
Maximum CAS access time
Maximum output enable (OE)
access time
Minimum read or write cycle
time
Minimum EDO page mode
cycle time
Maximum operating current
Maximum CMOS standby
current
- 25/30/35/50 ns RAS access time
- 12/16/18/25 ns column address access time
- 7/10/10/10 ns CAS access time
- Active: 770 mW max (ASAS4C256K16FO-50)
- Standby: 5.5 mW max, CMOS I/O
AS4C256K16FO-60.
I/O0
I/O1
I/O2
I/O3
I/O4
I/O5
I/O6
I/O7
4/11/01; V.0.9.1
RAS
V
V
V
WE
NC
NC
NC
A0
A1
A2
A3
CC
CC
CC
10
11
12
13
14
15
16
17
18
19
20
1
2
3
4
5
6
7
8
9
SOJ
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
GND
I/O15
I/O14
I/O13
I/O12
GND
I/O11
I/O10
I/O9
I/O8
NC
LCAS
UCAS
OE
A8
A7
A6
A5
A4
GND
Symbol
t
t
t
t
I
I
I/O0
I/O1
I/O2
I/O3
I/O4
I/O5
I/O6
I/O7
t
RAC
CAA
CAC
OEA
t
CC1
CC2
RC
PC
RAS
V
V
V
are also valid for
WE
NC
NC
NC
A0
A1
A2
A3
CC
CC
CC
5V 256K X 16 CMOS DRAM (Fast Page Mode)
1
2
3
4
5
6
7
8
9
10
13
14
15
16
17
18
19
20
21
22
TSOP II
Alliance Semiconductor
200
–25
2.0
25
12
40
12
7
7
44
43
42
41
40
39
38
37
36
35
32
31
30
29
28
27
26
25
24
23
V
I/O15
I/O14
I/O13
I/O12
V
I/O11
I/O10
I/O9
I/O8
NC
LCAS
UCAS
OE
A8
A7
A6
A5
A4
V
SS
SS
SS
• Refresh
• Read-modify-write
• TTL-compatible, three-state I/O
• JEDEC standard packages
• Single 5V power supply/built-in V
• Latch-up current > 200 mA
- 512 refresh cycles, 8 ms refresh interval
- RAS-only or CAS-before-RAS refresh or self-refresh
- Self-refresh option is available for new generation
- 400 mil, 40-pin SOJ
- 400 mil, 40/44-pin TSOP II
device only. Contact Alliance for more information.
Pin designation
180
–30
2.0
30
16
10
10
65
12
I/O0 to I/O15
®
A0 to A8
Pin(s)
UCAS
LCAS
GND
RAS
V
WE
OE
CC
–35
160
2.0
35
18
10
10
70
14
Column address strobe, upper byte
Column address strobe, lower byte
Copyright © Alliance Semiconductor. All rights reserved.
Power (+5V
Row address strobe
Read/write control
AS4C256K16FO
Address inputs
Output enable
Input/output
Description
bb
Ground
generator
140
–50
2.0
50
25
10
10
85
25
10%)
P. 1 of 25
Unit
mA
mA
ns
ns
ns
ns
ns
ns

Related parts for AS4C256K16F0-50JC

AS4C256K16F0-50JC Summary of contents

Page 1

... Output enable Column address strobe, upper byte Column address strobe, lower byte Read/write control Power (+5V 10%) Ground –35 –50 Unit 160 140 mA 2.0 2 Copyright © Alliance Semiconductor. All rights reserved. ...

Page 2

... Self-refresh option is available for new generation device only. Contact Alliance for more information. 4/11/01; V.0.9.1 ® Column decoder Sense amp 512 512 16 array (4,194,304) Symbol Min V 4.5 CC GND 0 –1.0 IL Alliance Semiconductor AS4C256K16FO Data I/O I/O0 to I/O15 buffer OE Substrate bias generator Typ Max Unit 5.0 5.5 V 0.0 0.0 V – ...

Page 3

... CC – 120 – = min RC = – 5.0 mA 2.4 – 2.4 = 4.2 mA – 0.4 – –0.2V, CC – 2.0 – – 0.2V, 0.2V CC are open Alliance Semiconductor AS4C256K16FO Min Max –1.0 +7.0 –1.0 +7.0 –1.0 +7.0 0 +70 –55 +150 – 260 10 – 1 – 50 200 – + –30 –35 –50 ...

Page 4

... Alliance Semiconductor AS4C256K16FO = + –50 Max Min Max Unit Notes – 85 – ns – 25 – ns 75K 50 75K ns – 10 – ...

Page 5

... Min 8 – 12 – 14 – 14 – 19 – 3 – 3 – – 56 – – 44 – 75K 30 75K 35 Alliance Semiconductor AS4C256K16FO = + –50 Max Min Max Unit Notes – 0 – ns – 9 – ns – 30 – ns – 0 – – 9 – – ...

Page 6

... AA Thevenin equivalent). t (min), the cycle is a read-write cycle and the data out will contain data read from the selected cell. If AWD CAA CAC CAP Alliance Semiconductor AS4C256K16FO = + –35 –50 Min Max Min Max Unit Notes 10 – ...

Page 7

... Falling input RAS t t RCD RSH t CSH t t CAH ASC t t CAS RCS RAD RAL t RAH Col Address t RAC CLZ Alliance Semiconductor AS4C256K16FO Undefined/don’t care RRH t RCH t ROH t OEZ t OFF t OEA t CAC Data Out ...

Page 8

... CLZ RAS t t RCD RSH t CSH t CRP t CRP t ASC t RAL t CAH Column t RCS t OEA t RAC CAC t CLZ Alliance Semiconductor AS4C256K16FO CRP t CAS t RCH t RRH t ROH t OEZ t OFF Data Out CRP t CAS t RCH t RRH t ROH t OEZ t OFF Data Out ...

Page 9

... UCAS, LCAS t ASR Row Address Address WE OE I/O 4/11/01; V.0.9.1 ® RAS t CSH t RSH t t RCD CAS t AWR t t RAD RAL t ASC t t RAH CAH Col Address t WCR t CWL t RWL WCS WCH t DHR Data In Alliance Semiconductor AS4C256K16FO ...

Page 10

... UCAS t CRP LCAS WE OE Upper I/O Lower I/O 4/11/01; V.0.9.1 ® RAS t AWR t RAD t RAL Column Address t t CAH ASC t t RCD RSH t CSH t CWL t WCS t RWL t WCR DHR Data In Alliance Semiconductor AS4C256K16FO CAS CRP t RPC t WCH ...

Page 11

... DS DH Data RAS t CSH t RSH t t RCD CAS t RAL t AWR t t RAD ASC t t RAH CAH Col Address t WCR t RWL t CWL t DHR t t OED Data In Alliance Semiconductor AS4C256K16FO RPC t CAS t CRP t WCH OEH ...

Page 12

... UCAS t CRP LCAS WE OE Upper I/O Lower I/O 4/11/01; V.0.9.1 ® RAS t t RAD RAL t AWR t RAH Column Address t CSH t t RCD RSH t CAH t ASC t CWL t DS Data In t OED Alliance Semiconductor AS4C256K16FO CAS CRP t RPC t RWL OEH ...

Page 13

... CSH RAL t ASC t t RAH CAH Col Address t RWD t AWD t t RCS CWD t OEA t OEZ t RAC CAC t CLZ Data Out Alliance Semiconductor AS4C256K16FO CAS t CRP t RPC t CWL t RWL OEH RWL t CWL OED Data In P ...

Page 14

... RWC t RAS t CSH t RCD CAS t RSH t ACS t RAL t CAH Column Address t RWD t AWD t CWD t OEA t OED t Data In CLZ t CAC OEZ RAC Data Out t OED Data Out Alliance Semiconductor AS4C256K16FO CRP t RPC t CWL t RWL ...

Page 15

... Lower Output 4/11/01; V.0.9.1 ® t RWC t RAS t CSH t CAS RCD t RSH t RAL t CAH Column Address t RWD t AWD t CWD t OEA Data Out t OED t RAC CAC t t CLZ OEZ Data Out Alliance Semiconductor AS4C256K16FO RPC t CRP t CWL t RWL Data ...

Page 16

... RCS RCH t t OEA OEA t CAC t CLZ CAP Data Out CAP t t CAC OFF t OEZ Data Out 1 Alliance Semiconductor AS4C256K16FO RSH RAL t CAH Col Address t RRH t t RCS RCH t OEA t CAP Data Out Data Out t RP ...

Page 17

... CAH CAH t t ASC ASC Column WCH WCH t WCS CWL t DS Data Data In 1 Alliance Semiconductor AS4C256K16FO t RWL CAH ASC WCS t RAL Col Address t CWL WCH OEH t OED Data In t ...

Page 18

... CLZ t t CAC CAC Data In Data In Data Out Data Out RAS t CHR t CPN t CSR RAS t CRP t RAH Row Address Alliance Semiconductor AS4C256K16FO CRP t RAL t CAH Col Address t RWL t t CWD CWL t t AWD WP t OEA t CAP t CLZ t CAC ...

Page 19

... CWD t CWL OEA OEA t DH Data CAP t OEZ t CLZ t OED CAP CAC t CLZ Alliance Semiconductor AS4C256K16FO RSH t t CAS CRP RAL t CAH t AWD t ASC RWL t CWD CWD t t CWL CWL ...

Page 20

... DHR I/O OE 4/11/01; V.0.9.1 ® RSH t ASC Col Address t RRH t OEA t CAC t CLZ Data Out RAS RP t RSH t RAL t CAH Col Address t RWL WCH t DH Data In Alliance Semiconductor AS4C256K16FO RAS PR CHR t CRP t OFF t OEZ ...

Page 21

... RCS t OEA t RWL t CWL WCH t WCS Data In t RCS t CWD t AWD t OEA CLZ t CAC Data Out Alliance Semiconductor AS4C256K16FO t t RSH RP t OFF Data Out t RRH t RCH t ROH CWL t OED OEZ t DS Data ...

Page 22

... Ambient temperature (°C) Typical supply current I CC vs. ambient temperature 0.0 –55 – 6.0 Ambient temperature (°C) Alliance Semiconductor AS4C256K16FO t RPS t RPC t CHS Typical access time t RAC vs. load capacitance C a 100 90 80 –70 70 –60 60 – ...

Page 23

... Output voltage (V) Typical fast page mode current I CC4 vs. supply voltage 0.0 4.0 4.5 5.0 5.5 6.0 Supply voltage (V) Alliance Semiconductor AS4C256K16FO Typical TTL stand-by current I CC2 vs. supply voltage V CC 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 4.0 4.5 5.0 5.5 6.0 Supply voltage (V) Typical output source current I OH vs. output voltage ...

Page 24

... Seating Plane ( MHz Room Temperature Symbol Signals IN1 RAS, UCAS, LCAS, WE, C IN2 OE C I/O0 to I/O15 I/O Alliance Semiconductor AS4C256K16FO 44-pin TSOP II c Min Max (mm) (mm 0. 0.95 1. 0.30 0.45 c 0.127 (typical) D 18.28 18.54 E 10.03 10. ...

Page 25

... AS4C256K16F0-25TC AS4C256K16F0-30TC AS4C256K16F0-25TI AS4C256K16F0-30TI Part numbering system AS4C 256K16F0 DRAM prefix Device number RAS access time 4/11/01; V.0.9.1 ® –30 ns –35 ns AS4C256K16F0-35JC AS4C256K16F0-35JI AS4C256K16F0-35TC AS4C256K16F0-35TI –XX X Package Plastic SOJ, 400 mil, 40-pin T = TSOP II, 400 mil, 40/44-pin Alliance Semiconductor AS4C256K16FO –50 ns AS4C256K16FO-50JC AS4C256K16FO-50JI AS4C256K16FO-50TC ...

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