Intel 8253 - Page 134

Philips Semiconductors Product specification
80C31/80C32
80C51 8-bit microcontroller family
128/256 byte RAM ROMless low voltage (2.7V–5.5V),
low power, high speed (33 MHz)
2000 Aug 07
28
V
CC
P0
EA
RST
XTAL1
XTAL2
V
SS
V
CC
V
CC
V
CC
I
CC
(NC)
CLOCK SIGNAL
SU00719
Figure 22. I
CC
Test Condition, Active Mode
All other pins are disconnected
V
CC
P0
EA
RST
XTAL1
XTAL2
V
SS
V
CC
V
CC
I
CC
(NC)
CLOCK SIGNAL
SU00720
Figure 23. I
CC
Test Condition, Idle Mode
All other pins are disconnected
V
CC
–0.5
0.45V
0.7V
CC
0.2V
CC
–0.1
t
CHCL
t
CLCL
t
CLCH
t
CLCX
t
CHCX
SU00009
Figure 24. Clock Signal Waveform for I
CC
Tests in Active and Idle Modes
t
CLCH
= t
CHCL
= 5ns
V
CC
P0
EA
RST
XTAL1
XTAL2
V
SS
V
CC
V
CC
I
CC
(NC)
SU00016
Figure 25. I
CC
Test Condition, Power Down Mode
All other pins are disconnected. V
CC
= 2 V to 5.5 V