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07Feb95@09:05h Intermediate Version
Semiconductor Group
36
SAE 81C90/91
DC Characteristics
V
CC
= 5 V
±
10 %;
T
A
= – 40 to + 110 C
V
SS
= 0 V
Notes
1)
If the bus lines work according to the ISO specification, additional circuitry is necessary for interconnection of
the input comparator to the bus lines.
2)
Not 100% tested, guaranteed by design characterization.
3)
This value is a typical value!
4)
This specification does not apply to the port pins (P00...P07, P10...P17) due to the implemented pullups!
5)
In oscillator mode the size of the low-end capacitance must correspond to the specification of the crystal
manufacturer. The optimum values depend on the selected crystal, the intended frequency and the actual
application hardware (stray capacitances). 10 pF are recommended for C
L
.
For best results keep the crystal circuitry connections as short as possible and keep the CLKOUT line away
from it. If the CLKOUT signal is not required by the system it should be switched off.
Parameter
Symbol
Limit Values
Unit
Test Condition
min.
max.
0.3
V
CC
Input low voltage
(all except XTAL1 and XTAL2)
V
IL
SR 0
V
–
Input low voltage
(XTAL1 and XTAL2)
V
ILX
SR 0
0.5
V
–
Input high voltage
(all except XTAL1 and XTAL2)
V
IH
SR 0.7
V
CC
V
CC
V
–
Input high voltage
(XTAL1 and XTAL2)
Comparator input voltage
1)
Common mode voltage
2)
Hysteresis
2)
Offset voltage
2)
V
IHX
SR
V
CC
– 1.0
V
CC
V
–
V
CI
V
ICOM
SR 1.5
V
HYS
DC –
V
OFF
DC –
V
OL
DC –
SR 0.5
V
CC
+ 0.5
V
CC
– 1.5
100
3)
100
3)
0.2
V
CC
V
–
V
–
mV
–
mV
–
I
OL
= 1.6 mA
Output low voltage
(all except CLKOUT, TX0, TX1)
V
Output low voltage (CLKOUT)
V
OLC
DC –
V
OH
DC 0.8
V
CC
0.4
V
CC
V
I
OL1
= 10 mA
I
OH
= – 1.6 mA
Output high voltage
(all except CLKOUT, TX0, TX1)
V
Output high voltage (CLKOUT)
V
OHC
DC
V
CC
– 0.8
I
I
DC –
I
SRC
DC 5
I
SNK
DC 5
C
L
DC 6.8
C
I
DC –
V
CC
±
1
–
V
μ
A
mA
I
OH
= – 10 mA
0 V <
V
IN
<
V
CC
4)
V
O
=
V
CC
– 1 V
V
O
= 1 V
Input leakage current
Source output current (TX0, TX1)
Sink output current (TX0, TX1)
Low end capacitance
5)
Pin capacitance
2)
–
mA
12
pF
10
pF
f
= 1 MHz
T
A
= 25 C
Power supply current
I
CC
–
30
mA