MT42C4256C-10/883C AUSTIN [Austin Semiconductor], MT42C4256C-10/883C Datasheet
MT42C4256C-10/883C
Manufacturer Part Number
MT42C4256C-10/883C
Description
256K X 4 VRAM 256K x 4 DRAM with 512K x 4 SAM
Manufacturer
AUSTIN [Austin Semiconductor]
Datasheet
1.MT42C4256C-10883C.pdf
(57 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MT42C4256C-10/883C
Manufacturer:
MT
Quantity:
10
256K X 4 VRAM
256K x 4 DRAM
with 512K x 4 SAM
AVAILABLE AS MILITARY
• SMD 5962-89497
• MIL-STD-883
FEATURES
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
OPTIONS
• Timing
• Package(s)
SMJ44C251B/MT42C4256
Rev. 0.1 12/03
SPECIFICATIONS
Serial-Data Register
Class B High-Reliability Processing
SAM: 512 Words × 4 Bits
On-Chip Color Register
Write-Per-Bit Modes to Simplify System Design
512 Selectable Serial-Register Starting
Split Serial-Data Register for Simplified Real-Time Register Reload
Single 5-V Power Supply (±10% Tolerance)
Dual Port Accessibility–Simultaneous and Asynchronous Access
From the DRAM and SAM Ports
as Four Memory Address Locations Written per Cycle From an
Write-Per-Bit Feature for Selective Write to Each RAM I/O; Two
Enhanced Page-Mode Operation for Faster Access
CAS-Before-RAS (CBR) and Hidden Refresh Modes
All Inputs/Outputs and Clocks Are TTL Compatible
Long Refresh Period: Every 8 ms (Max)
3-State Serial I/Os Allow Easy Multiplexing of Video-Data
DRAM: 262144 Words × 4 Bits
Bidirectional-Data-Transfer Function Between the DRAM and the
4 × 4 Block-Write Feature for Fast Area Fill Operations; As Many
Up to 33-MHz Uninterrupted Serial-Data Streams
Streams
100ns, 30ns/27ns
120ns, 35ns/35ns
Ceramic SOJ
Ceramic DIP (400 mil)
Ceramic LCC
Ceramic Flat Pack
Ceramic ZIP
Ceramic LCC
For more products and information
www.austinsemiconductor.com
please visit our web site at
Austin Semiconductor, Inc.
MT Prefix
MARKING
DCJ
EC
CZ
---
C
F
-10
-12
SMJ Prefix
HMM
SVM
JDM
HJM
---
---
1
ME\/WE\
TR\/OE\
SDQ1
SDQ2
RAS\
SDQ0 - SDQ3 SDQ1 - SDQ4 Serial Data In-Out
DQ1
DQ2
Vcc
28-Pin DIP (C)
NC
PIN NAME
DQ0 - DQ3
A8
A6
A5
A4
SC
A0 - A8
Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.
(SMJ)
(400 MIL)
TRG\
CAS\
RAS\
GND
DSF
QSF
Vcc
Vss
SE\
SC
W\
ME\/WE\
1
2
3
4
5
6
7
8
9
10
11
12
13
14
TR\/OE\
SDQ1
SDQ2
RAS\
DQ1
DQ2
Vcc
NC
A8
A6
A5
A4
SC
28
27
26
25
24
23
22
21
20
19
18
17
16
15
DQ1 - DQ4
PIN NAME
ME\ /WE\
PIN ASSIGNMENT
TR\ /OE\
A0 - A8
Vss
SDQ4
SDQ3
SE\
DQ4
DQ3
DSF
CAS\
QSF
A0
A1
A2
A3
A7
CAS\
RAS\
(MT)
DSF
QSF
SE\
Vcc
Vss
NC
SC
28-Pin ZIP (CZ)
SDQ2
SDQ0
TRG\
GND
DQ3
DQ1
28-Pin FP (F)
(Top View)
DSF
Vcc
QSF
Vss
A8
A5
A3
A1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Address Inputs
Column Enable
DRAM Data In-Out/Write-Mask Bit
Serial Enable
Row Enable
Serial Data Clock
Transfer Register/Q Output Enable
Write-Mask Select/Write Enable
Special Function Select
Split-Register Activity Status
5V Supply
Ground
Ground (Important: Not Connected to
internal Vss, Pin should be left open or
tied to ground.
1
3
5
7
9
11
13
15
17
19
21
23
25
27
10
12
14
16
18
20
22
24
26
28
ME\/WE\
2
4
6
8
TR\/OE\
SMJ44C251B
SDQ1
SDQ2
DQ2
SE\
SDQ3
SC
SDQ1
DQ0
W\
RAS\
A8
A4
A7
A2
A0
CAS\
RAS\
DQ1
DQ2
Vcc
NC
A8
A6
A5
A4
SC
28-Pin SOJ (DCJ)
28-Pin LCC (EC)
28
27
26
25
24
23
22
21
20
19
18
17
16
15
DESCRIPTION
MT42C4256
1
2
3
4
5
6
7
8
9
10
11
12
13
14
VRAM
VRAM
VRAM
VRAM
VRAM
Vss
SDQ4
SDQ3
SE\
DQ4
DQ3
DSF
CAS\
QSF
A0
A1
A2
A3
A7
28
27
26
25
24
23
22
21
20
19
18
17
16
15
Vss
SDQ4
SDQ3
SE\
DQ4
DQ3
DSF
CAS\
QSF
A0
A1
A2
A3
A7
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