Philips Semiconductors
Product specification
CMOS single-chip 8-bit microcontrollers
80C31/80C51/87C51
V
V
CC
CC
I
I
CC
CC
V
V
CC
CC
V
RST
V
V
CC
CC
CC
P0
EA
P0
EA
RST
(NC)
XTAL2
XTAL1
(NC)
XTAL2
XTAL1
CLOCK SIGNAL
CLOCK SIGNAL
V
V
SS
SS
SU00719
SU00720
Figure 9. I Test Condition, Active Mode
Figure 10. I Test Condition, Idle Mode
CC
CC
All other pins are disconnected
All other pins are disconnected
V
–0.5
CC
0.7V
CC
0.45V
0.2V
–0.1
CC
t
CHCX
t
t
CHCL
t
CLCX
CLCH
t
CLCL
SU00015
Figure 11. Clock Signal Waveform for I Tests in Active and Idle Modes
CC
t
= t
CHCL
= 5ns
CLCH
V
CC
CC
I
CC
V
CC
V
RST
P0
EA
(NC)
XTAL2
XTAL1
V
SS
SU00016
Figure 12. I Test Condition, Power Down Mode
CC
All other pins are disconnected. V = 2V to 5.5V
CC
20
1996 Aug 16
NXP [ NXP ]
