P89C668 Philips Semiconductors, P89C668 Datasheet - Page 40

• Manufacturer Part Number: P89C668
• Description: 80C51 8-bit Flash microcontroller family 64KB ISP FLASH with 8KB RAM
• Manufacturer: Philips Semiconductors

Philips Semiconductors
2001 Jul 27
AC inputs during testing are driven at V
NOTE:
Timing measurements are made at V
80C51 8-bit Flash microcontroller family
64KB ISP Flash with 8KB RAM
V
CC
0.45V
–0.5
I
CC
(mA)
Figure 35. AC Testing Input/Output
70
60
50
40
30
20
10
0.2V
0.2V
IH
CC
CC
CC
min for a logic ‘1’ and V
+0.9
–0.1
–0.5 for a logic ‘1’ and 0.45V for a logic ‘0’.
Valid only within frequency specifications of the device under test
2
4
IL
max for a logic ‘0’.
Frequency at XTAL1 (MHz, 6 clock mode)
6
SU00717
Figure 37. I
8
40
CC
MAXIMUM ACTIVE I
vs. FREQ
10
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
/V
MAXIMUM IDLE
OL
level occurs. I
V
89C668
V
12
LOAD
LOAD
CC
TYPICAL ACTIVE I
–0.1V
+0.1V
OH
Figure 36. Float Waveform
14
/I
OL
TYPICAL IDLE
20mA.
16
CC
REFERENCE
TIMING
POINTS
18
SU01404
P89C668
20
Preliminary data
V
V
OH
OL
SU00718
+0.1V
–0.1V