Hyundai gms90x51c User Manual
GMS90X5XC Series
HYUNDAI MicroElectronics
Jan. 2001 Ver 1.0
25
DC Characteristics
DC Characteristics for GMS90C51C/52C/54C
V
CC
= 5V + 10%, -15%; V
SS
=0V; T
A
= 0
°
C to 70
°
C
Parameter
Symbol
Limit Values
Unit
Test Conditions
Min.
Max.
Input low voltage
(except EA, RESET)
(except EA, RESET)
V
IL
-0.5
0.2V
CC
- 0.1
V
-
Input low voltage (EA)
V
IL1
-0.5
0.2V
CC
- 0.3
V
-
Input low voltage (RESET)
V
IL2
-0.5
0.2V
CC
+ 0.1
V
-
Input high voltage (except
XTAL1, EA, RESET)
XTAL1, EA, RESET)
V
IH
0.2V
CC
+ 0.9
V
CC
+ 0.5
V
-
Input high voltage to XTAL1
V
IH1
0.7V
CC
V
CC
+ 0.5
V
-
Input high voltage to EA,
RESET
RESET
V
IH2
0.6V
CC
V
CC
+ 0.5
V
-
Output low voltage
(ports 1, 2, 3)
(ports 1, 2, 3)
V
OL
-
0.45
V
I
OL
= 1.6mA
1)
1) Capacitive loading on ports 0 and 2 may cause spurious noise pulses to be superimposed on the V
OL
of ALE and port 3.
The noise is due to external bus capacitance discharging into the port 0 and port 2 pins when these pins make 1-to-0 tran-
sitions during bus operation. In the worst case (capacitive loading:
sitions during bus operation. In the worst case (capacitive loading:
>
50pF at 3.3V,
>
100pF at 5V), the noise pulse on ALE
line may exceed 0.8V. In such cases it may be desirable to qualify ALE with a schmitt-trigger, or use an address latch with
a schmitt-trigger strobe input.
a schmitt-trigger strobe input.
Output low voltage
(port 0, ALE, PSEN)
(port 0, ALE, PSEN)
V
OL1
-
0.45
V
I
OL
= 3.2mA
Output high voltage
(ports 1, 2, 3)
(ports 1, 2, 3)
V
OH
2.4
0.9V
CC
-
V
I
OH
= -80
µ
A
I
OH
= -10
µ
A
Output high voltage
(port 0 in external bus
mode, ALE, PSEN)
(port 0 in external bus
mode, ALE, PSEN)
V
OH1
2.4
0.9V
CC
-
V
I
OH
= -800
µ
A
2)
I
OH
= -80
µ
A
Logic 0 input current
(ports 1, 2, 3)
(ports 1, 2, 3)
I
IL
-10
-50
µ
A
V
IN
= 0.45V
Logical 1-to-0 transition cur-
rent (ports 1, 2, 3)
rent (ports 1, 2, 3)
I
TL
-65
-650
µ
A
V
IN
= 2.0V
Input leakage current
(port 0, EA)
(port 0, EA)
I
LI
-
±
1
µ
A
0.45
<
V
IN
<
V
CC
Pin capacitance
C
IO
-
10
pF
f
C
= 1MHz
T
A
= 25
°
C
Power supply current:
Active mode, 12MHz
Active mode, 12MHz
3)
Idle mode, 12MHz
Active mode, 24 MHz
Idle mode, 24MHz
Active mode, 40 MHz
Idle mode, 40 MHz
Power Down Mode
I
CC
I
CC
I
CC
I
CC
I
CC
I
CC
I
PD
-
-
-
-
-
-
-
-
-
-
-
-
-
21
4.8
36.2
8.2
58.5
12.5
50
4.8
36.2
8.2
58.5
12.5
50
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
µ
A
V
CC
= 5V
4)
V
CC
= 5V
5)
V
CC
V
CC
V
CC
V
CC
V
CC
= 5V
6)