83C576 Philips Semiconductors, 83C576 Datasheet - Page 36

• Manufacturer Part Number: 83C576
• Description: 80C51 8-bit microcontroller family 8K/256 OTP/ROM/ 6 channel 10-bit A/D/ 4 comparators/ failure detect circuitry/ watchdog timer
• Manufacturer: Philips Semiconductors

Philips Semiconductors
1998 Jun 04
WRITE TO SBUF
INSTRUCTION
INPUT DATA
OUTPUT DATA
80C51 8-bit microcontroller family
8K/256 OTP/ROM, 6 channel 10-bit A/D, 4 comparators,
failure detect circuitry, watchdog timer
CLEAR RI
CLOCK
ALE
0
t
QVXH
V
NOTE:
For timing purposes, a port is no longer floating when a 100mV change from load voltage occurs,
and begins to float when a 100mV change from the loaded V
LOAD
t
1
XHDV
NOTE:
AC inputs during testing are driven at V
Timing measurements are made at V
V
CC
0
t
0.45V
XLXL
VALID
–0.5
V
V
V
LOAD
LOAD
CC
0.45V
–0.5
–0.1V
+0.1V
t
XHQX
2
Figure 28. Shift Register Mode Timing
Figure 30. AC Testing Input/Output
1
VALID
Figure 29. External Clock Drive
Figure 31. Float Waveform
0.2V
t
CHCL
0.7V
t
CC
XHDX
CC
3
0.2V
0.2V
–0.1
IH
CC
min for a logic ‘1’ and V
REFERENCE
2
VALID
CC
CC
TIMING
POINTS
–0.5 for a logic ‘1’ and 0.45V for a logic ‘0’.
+0.9
–0.1
36
t
CLCX
4
t
CLCL
OH
VALID
3
/V
OL
IL
t
CHCX
max for a logic ‘0’.
level occurs. I
t
CLCH
5
V
V
OH
OL
SU00009
VALID
4
+0.1V
OH
–0.1V
SU00010
/I
OL
SU00011
6
20mA.
VALID
5
83C576/87C576
7
VALID
6
Product specification
8
SET TI
VALID
SET RI
SU00027
7