Philips Semiconductors Product data
P89C660/P89C662/P89C664/
P89C668
80C51 8-bit Flash microcontroller family
16KB/32KB/64KB ISP/IAP Flash with 512B/1KB/2KB/8KB RAM
2002 Oct 28
83
V
CC
–0.5
0.45V
0.2V
CC
+0.9
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’.
SU00717
Figure 62. AC Testing Input/Output
V
LOAD
V
LOAD
+0.1V
V
LOAD
–0.1V
V
OH
–0.1V
V
OL
+0.1V
NOTE:
TIMING
REFERENCE
POINTS
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.
SU00718
Figure 63. Float Waveform
2 4 6 8 10 12 14 16 18
60
50
40
30
20
10
Frequency at XTAL1 (MHz, 6 clock mode)
I
CC
(mA)
89C660/662/664/668
MAXIMUM ACTIVE I
CC
TYPICAL ACTIVE I
CC
MAXIMUM IDLE
TYPICAL IDLE
SU01402
20
70
Figure 64. I
CC
vs. FREQ
Valid only within frequency specifications of the device under test
