80C575 Datasheet, PDF (31/40 Pages) NXP Semiconductors – 80C51 8-bit microcontroller family 8K/256 OTP/ROM/ROMless, 4 comparator, failure detect circuitry, watchdog timer

Philips Semiconductors
80C51 8-bit microcontroller family
8K/256 OTP/ROM/ROMless, 4 comparator, failure detect circuitry, watchdog timer
Product specification
80C575/83C575/
87C575
V_CC–0.5
0.2V_CC+0.9
0.45V
0.2V_CC–0.1
NOTE:
AC inputs during testing are driven at V_CC –0.5 for a logic ‘1’ and 0.45V for a logic ‘0’.
Timing measurements are made at V_IH min for a logic ‘1’ and V_IL max for a logic ‘0’.
Figure 27. AC Testing Input/Output
SU00010
V_LOAD
V_LOAD+0.1V
V_LOAD–0.1V
TIMING
REFERENCE
POINTS
V_OH–0.1V
V_OL+0.1V
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_OH/V_OL level occurs. I_OH/I_OL ≥ ±20mA.
SU00011
Figure 28. Float Waveform
30
MAX ACTIVE
25
20
15
I_CC (mA)
10
5
TYP ACTIVE
MAX IDLE
TYP IDLE
0
0
45
10
FREQUENCY (MHz)
15 16
Figure 29. I_CC vs. FREQ
Valid only within frequency specifications of the device under test
20
SU00245
1998 May 01
31