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V53C16256H Schematic ( PDF Datasheet ) - Mosel Vitelic Corp

Teilenummer V53C16256H
Beschreibung 256K x 16 FAST PAGE MODE CMOS DYNAMIC RAM
Hersteller Mosel Vitelic Corp
Logo Mosel Vitelic  Corp Logo 




Gesamt 19 Seiten
V53C16256H Datasheet, Funktion
MOSEL VITELIC
V53C16256H
256K x 16 FAST PAGE MODE
CMOS DYNAMIC RAM
PRELIMINARY
HIGH PERFORMANCE
Max. RAS Access Time, (tRAC)
Max. Column Address Access Time, (tCAA)
Min. Fast Page Mode Cycle Time, (tPC)
Min. Read/Write Cycle Time, (tRC)
30
30 ns
16 ns
19 ns
65 ns
35
35 ns
18 ns
21 ns
70 ns
40
40 ns
20 ns
23 ns
75 ns
45
45 ns
22 ns
25 ns
80 ns
50
50 ns
24 ns
28 ns
90 ns
60
60 ns
30 ns
35 ns
110 ns
Features
s 256K x 16-bit organization
s Fast Page Mode for a sustained data rate
of 53 MHz.
s RAS access time: 30, 35, 40, 45, 50, 60 ns
s Dual CAS Inputs
s Low power dissipation
s Read-Modify-Write, RAS-Only Refresh,
CAS-Before-RAS Refresh
s Refresh Interval: 512 cycles/8 ms
s Available in 40-pin 400 mil SOJ and
40/44L-pin 400 mil TSOP-II packages
s Single +5V ±10% Power Supply
s TTL Interface
Description
The V53C16256H is a 262,144 x 16 bit high-
performance CMOS dynamic random access mem-
ory. The V53C16256H offers Fast Page mode with
dual CAS inputs. An address, CAS and RAS input
capacitances are reduced to one quarter when the
x4 DRAM is used to construct the same memory
density. The V53C16256H has symmetric address
and accepts 512 cycle 8ms interval.
All inputs are TTL compatible. Fast Page Mode
operation allows random access up to 512 x 16 bits,
within a page, with cycle times as short as 19ns.
The V53C16256H is best suited for graphics, and
DSP applications.
Device Usage Chart
Operating
Temperature
Range
0°C to 70 °C
-40°C to +85°C
Package Outline
KT
••
••
30
Access Time (ns)
35 40 45 50
••••
••••
Power
Temperature
60 Std.
Mark
• • Blank
••
I
V53C16256H Rev. 2.3 June 1998
1






V53C16256H Datasheet, Funktion
MOSEL VITELIC
V53C16256H
AC Characteristics (Cont’d)
JEDEC
# Symbol Symbol Parameter
30 35 40 45 50 60
Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Unit Notes
21 tCL1QX
tLZ
OE or CAS to
0
0
0
0
0
0 ns 16
Low-Z Output
22 tCH2QZ
tHZ
OE or CAS to
High-Z Output
0 5 0 6 0 6 0 7 0 8 0 10 ns 16
23 tRL1AX
tAR
Column Address 26
28
30
35
40
50
ns
Hold Time
from RAS
24 tRL1AV
tRAD RAS to Column
Address Delay
Time
10 14 11 17 12 20 13 23 14 26 15 30 ns 11
25 tCL1RH1(W) tRSH (W) RAS or CAS Hold 10 10 12 13 14 15 ns
Time in Write Cycle
26 tWL1CH1
tCWL
Write Command to 10
11
12
13
14
15
ns
CAS Lead Time
27 tWL1CL2
tWCS
Write Command
0
0
0
0
0
0 ns 12, 13
Setup Time
28 tCL1WH1 tWCH Write Command
5
5
5
6
7 10 ns
Hold Time
29 tWL1WH1 tWP
Write Pulse Width 5
5
5
6
7 10 ns
30 tRL1WH1 tWCR Write Command
26
28
30
35
40
50
ns
Hold Time from
RAS
31 tWL1RH1
tRWL
Write Command to 10
11
12
13
14
15
ns
RAS Lead Time
32 tDVWL2
tDS
Data in Setup Time 0
0
0
0
0
0 ns 14
33 tWL1DX
tDH
Data in Hold Time 5
5
5
6
7 10 ns 14
34 tWL1GL2 tWOH Write to OE Hold
5
5
6
7
8 10 ns 14
Time
35 tGH2DX
tOED
OE to Data Delay 5
5
6
7
8 10 ns 14
Time
36 tRL2RL2
tRWC
Read-Modify-Write 100
105
110
115
130 170
ns
(RMW)
Cycle Time
37 tRL1RH1 tRRW Read-Modify-Write 65 70 75 80 87 105 ns
(RMW)
Cycle RAS Pulse
Width
38 tCL1WL2 tCWD CAS to WE Delay 26 28 30 32 34 40 ns 12
39 tRL1WL2 tRWD RAS to WE Delay 50 54 58 62 68 85 ns 12
in Read-Modify-
Write Cycle
40 tCL1CH1 tCRW CAS Pulse Width 44 46 48 50 52 65 ns
(RMW)
V53C16256H Rev. 2.3 June 1998
6

6 Page









V53C16256H pdf, datenblatt
MOSEL VITELIC
V53C16256H
Waveforms of Fast Page Mode Read Cycle
RAS VIH
V IL
CAS VIH
V IL
ADDRESS VIH
V IL
WE VIH
V IL
OE VIH
V IL
VOH
I/O
VOL
tAR (23)
t RAS (1)
t RP (3)
t RCD (6)
tCRP (13)
tPC (42)
tCP(43)
tCAS (5)
tRSH (R)(12)
tCAS (5)
tCRP (13)
tCAS (5)
tASR (8)
tRAH (9)
tASC (10)
tCSH (4)
tASC (10)
t CAH (11)
ROW
ADDRESS
tRCS (7)
COLUMN
ADDRESS
COLUMN
ADDRESS
tRCH (14)
tCAH (11)
tRCS (7)
tCAR (44)
t CAH (11)
COLUMN
ADDRESS
tRCS (7)
tRCH (14)
tCAA (20)
tOAC (17)
t CAP (45)
t OAC (17)
tCAA (20)
tOAC (17)
tRRH (15)
tRAC (19)
tCAC (18)
t LZ (21)
tHZ (22)
CACt (18)
tHZ (22)
tLZ (21)
VALID
DATA OUT
t CAC (18)
tLZ (21)
tHZ (22)
tHZ (22)
VALID
DATA OUT
tHZ (22)
tHZ (22)
VALID
DATA OUT
16256H-09
Waveforms of Fast Page Mode Write Cycle
RAS VIH
V IL
CAS VIH
V IL
VIH
ADDRESS
V IL
WE VIH
V IL
OE VIH
VIL
VIH
I/O
V IL
tAR (23)
t RAS (1)
tRP (3)
t CRP (13)
tRCD (6)
tPC (42)
tCP(43)
t CAS (5)
tCAS (5)
tRSH (W)(25)
tCAS (5)
tRAH (9)
tASR (8)
tCSH (4)
tASC (10)
tCAH (11)
ROW
ADD
tRAD (24)
tWCS (27)
COLUMN
ADDRESS
t CWL (26)
tWCS (27)
t WCH (28)
t WP (29)
tASC (10)
tCAH (11)
COLUMN
ADDRESS
tCWL (26)
t WCS (27)
tWCH (28)
t WP(29)
tCAR (44)
t CAH (11)
COLUMN
ADDRESS
tCWL (26)
tRWL(31)
tWCH (28)
tWP(29)
tDS (32)
VALID
DATA IN
tDH
tDS
(33)
(32)
OPEN
VALID
DATA IN
tDS (32)
tDH (33)
VALID
DATA IN
tDH (33)
OPEN
tCRP (13)
16256H-10
V53C16256H Rev. 2.3 June 1998
Don’t Care
Undefined
12

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