GMS90 Hynix Semiconductor, GMS90 Datasheet - Page 48

• Manufacturer Part Number: GMS90
• Description: 8-BIT SINGLE-CHIP MICROCONTROLLERS
• Manufacturer: Hynix Semiconductor

Figure 7. AC Testing: Input, Output Waveforms
Figure 8. Float Waveforms
Figure 9. External Clock Cycle
44
For timing purposes a port pin is no longer floating when a 100mV change from load voltage
occurs and begins to float when a 100mV change from the loaded V
I
OL
/ I
AC Inputs during testing are driven at V
Timing measurements are made a V
OH
20mA.
V
CC
V
0.45V
LOAD
0.5V
V
CC
0.45V
0.5V
V
V
LOAD
LOAD
0.2 V
0.1
0.1
0.7 V
CC
CC
0.1
0.2V
IHmin
CC
CC
Timing Reference Points
0.2V
t
0.2V
for a logic ‘1’ and V
CHCL
0.1
0.5V for a logic ‘1’ and 0.45V for a logic ‘0’.
CC
CC
Test Points
0.9
0.1
t
CHCX
t
CLCH
t
CLCL
ILmax
OH
/ V
t
CLCX
for a logic ‘0’.
OL
V
V
OH
OL
level occurs.
0.1
0.1
Dec. 1998 Ver 3.0
GMS90 Series