P87C52 PHILIPS [NXP Semiconductors], P87C52 Datasheet - Page 46

• Manufacturer Part Number: P87C52
• Description: 80C51 8-bit microcontrollers 16K/32K, 512 OTP, I2C, watchdog timer
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
2003 Jan 24
AC inputs during testing are driven at V
NOTE:
Timing measurements are made at V
80C51 8-bit microcontroller family
4K/8K/16K/32K ROM/OTP, low voltage (2.7 to 5.5 V),
low power, high speed (30/33 MHz)
V
CC
0.45V
–0.5
Figure 32. AC Testing Input/Output
0.2V
0.2V
IH
CC
CC
CC
Valid only within frequency specifications of the specified operating voltage
min for a logic ‘1’ and V
+0.9
–0.1
–0.5 for a logic ‘1’ and 0.45V for a logic ‘0’.
35
30
25
20
15
10
5
Figure 34. I
IL
4
max for a logic ‘0’.
8
SU00717
CC
12
FREQ AT XTAL1 (MHz)
vs. FREQ for 12-clock operation
16
46
20
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
V
OH
LOAD
24
/V
OL
level occurs. I
28
V
V
LOAD
LOAD
32
SU01486
–0.1V
+0.1V
OH
Figure 33. Float Waveform
/I
36
MAX ACTIVE MODE
I
OL
CC
TYP ACTIVE MODE
MAX IDLE MODE
TYP IDLE MODE
MAX = 0.9
P80C3xX2; P80C5xX2;
20mA.
FREQ. + 1.0
REFERENCE
TIMING
POINTS
P87C5xX2
Product data
V
V
OH
OL
SU00718
+0.1V
–0.1V