DP8522AV-25 National Semiconductor, DP8522AV-25 Datasheet - Page 48

• Manufacturer Part Number: DP8522AV-25
• Description: IC CTRLR 4M VRAM 25MHZ 68PLCC
• Manufacturer: National Semiconductor

Specifications of DP8522AV-25

• Controller Type: Video RAM Controller, Drivers
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 68-LCC (J-Lead)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Current - Supply: -
• Voltage - Supply: -
• Interface: -
• Other names: *DP8522AV-25

Symbol
V
V
V
V
V
V
I
I
I
I
I
I
I
I
C
IN
IL ML
CC1
CC1
CC1
CC2
CC2
CC2
13 0 Absolute Maximum Ratings
If Military Aerospace specified devices are required
please contact the National Semiconductor Sales
Office Distributors for availability and specifications
Temperature under Bias
Storage Temperature
14 0 DC Electrical Characteristics
15 0 AC Timing Parameters DP8520A DP8521A DP8522A
The AC timing parameters are grouped into sectional num-
bers as shown below These numbers also refer to the tim-
ing diagrams
1 –38
50 –56
100 –121 Common dual access parameters used for Port
200 –212 Refresh parameters
300 –315 Mode 0 access parameters used in both single
IH
IL
OH1
OL1
OH2
OL2
IN
Note C
IN
is not 100% tested
Common parameters to all modes of operation
Difference parameters used to calculate
RAS low time
RAS precharge time
CAS high time and
CAS low time
B accesses and inputs and outputs used only in
dual accessing
and dual access applications
Logical 1 Input Voltage
Logical 0 Input Voltage
Q and WE Outputs
Q and WE Outputs
All Outputs except Qs WE
All Outputs except Qs WE
Input Leakage Current
ML Input Current (Low)
Standby Current
Standby Current
Standby Current
Supply Current
Supply Current
Supply Current
Input Capacitance
Parameter
b
Tested with a Limited
Functional Pattern
Tested with a Limited
Functional Pattern
I
I
I
I
V
V
CLK at 8 MHz (V
CLK at 20 MHz (V
CLK at 25 MHz (V
CLK at 8 MHz (Inputs Active)
(I
CLK at 20 MHz (Inputs Active)
(I
CLK at 25 MHz (Inputs Active)
(I
f
65 C to
OH
OL
OH
OL
IN
LOAD
LOAD
LOAD
IN
IN
0 C to
at 1 MHz
e
e
e b
e b
e
e
10 mA
3 mA
V
GND
e
e
e
CC
a
10 mA
3 mA
a
0) (V
0) (V
0) (V
150 C
or GND
(Note 1)
70 C
Conditions
T
IN
IN
IN
A
IN
e
e
e
e
IN
IN
e
48
0 C to
V
V
V
e
e
CC
CC
CC
V
V
V
CC
CC
CC
All Input or Output Voltage
Power Dissipation
400 – 416 Mode 1 access parameters used in both single
450 – 455 Special Mode 1 access parameters which super-
500 – 506 Programming parameters
600 – 605 Graphics parameters for VRAM transfer cycles
Unless otherwise stated V
70 C the output load capacitance is typical for 4 banks of
18 VRAMs per bank including trace capacitance (see Note
2)
Two different loads are specified
C
C
C
C
C
or GND)
or GND)
or GND)
L
L
H
H
H
or GND)
with Respect to GND
a
or GND)
or GND)
e
e
e
e
e
70 C V
50 pF loads on all outputs except
150 pF loads on Q0– 8 9 and 10 or
50 pF loads on all outputs except
125 pF loads on RAS0– 3 and CAS0–3 and
380 pF loads on Q0– 8 9 and 10
and dual access applications
sede the 400– 416 parameters when dual ac-
cessing
CC
e
V
V
CC
CC
5V
b
b
Min
2 0
20 MHz
0 5
b
b
10
g
10% GND
1 0
1 0
CC
Typ
e
10
20
40
50
6
8
5 0V
e
0V
V
g
CC
10% 0
Max
200
0 8
0 5
0 5
10
15
17
20
40
75
95
10
a
b
0 5V to
0 5
k
T
0 5W
a
Units
A k
mA
mA
mA
mA
mA
mA
pF
7V
V
V
V
V
V
V
A
A