Philips Semiconductors
Product specification
Single-chip 8-bit microcontroller
80C552/83C552
V
–0.5
DD
V
V
+0.1V
LOAD
V
V
–0.1V
TIMING
REFERENCE
POINTS
OH
0.2V
0.2V
+0.9
–0.1
DD
V
LOAD
DD
–0.1V
LOAD
+0.1V
OL
0.45V
NOTE:
NOTE:
AC INPUTS DURING TESTING ARE DRIVEN AT V
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
20mA.
–0.5 FOR A LOGIC ‘1’ AND
DD
0.45V FOR A LOGIC ‘0’. TIMING MEASUREMENTS ARE MADE AT V MIN FOR A
IH
/V
OH OL
LEVEL OCCURS. I /I > +
OH OL
LOGIC ‘1’ AND V MAX FOR A LOGIC ‘0’.
IL
Figure 7. AC Testing Input/Output
Figure 8. Float Waveform
repeated START condition
STOP condition
START or repeated START condition
START condition
t
SU;STA
t
RD
0.7 V
CC
SDA
(INPUT/OUTPUT)
0.3 V
CC
t
BUF
t
t
t
FC
FD
RC
t
SU;STO
0.7 V
CC
SCL
(INPUT/OUTPUT)
0.3 V
CC
t
SU;DAT3
t
t
t
t
SU;DAT1
t
t
SU;DAT2
HD;STA
LOW
HIGH
HD;DAT
2
Figure 9. Timing SIO1 (I C) Interface
18
1998 Aug 13
NXP [ NXP ]
