Electrical Specifications
MC68HC908QL4 MC68HC908QL3 MC68HC908QL2 Data Sheet, Rev. 4
208
Freescale Semiconductor
17.8 3.3-V DC Electrical Characteristics
Characteristic
(1)
1. V
DD
= 3.0 to 3.6 Vdc, V
SS
= 0 Vdc, T
A
= T
L
to T
H
, unless otherwise noted.
2. Typical values reflect average measurements at midpoint of voltage range, 25°C only.
3. Values are based on characterization results, not tested in production.
4. Guaranteed by design, not tested in production.
5. If minimum V
DD
is not reached before the internal POR reset is released, the LVI will hold the part in reset until minimum
V
DD
is reached.
6. R
PU
is measured at
V
DD
= 3.3 V. Pullup resistors only available when PTAPUEx is enabled with KBIPx = 0.
7. R
PD
is measured at
V
DD
= 3.3 V, Pulldown resistors only available when PTAPUEx is enabled with KBIPx =1.
Symbol
Min
Typ
(2)
Max
Unit
Output high voltage
I
Load
= –0.6 mA, all I/O pins
I
Load
= –4.0 mA, all I/O pins
I
Load
= –10.0 mA, PTA0, PTA1, PTA3–PTA5 only
V
OH
V
DD
–0.3
V
DD
–1.0
V
DD
–0.8
—
—
—
—
—
—
V
Maximum combined I
OH
(all I/O pins)
I
OHT
—
—
50
mA
Output low voltage
I
Load
= 0.5 mA, all I/O pins
I
Load
= 6.0 mA, all I/O pins
I
Load
= 10.0 mA, PTA0, PTA1, PTA3–PTA5 only
V
OL
—
—
—
—
—
—
0.3
1.0
0.8
V
Maximum combined I
OL
(all I/O pins)
I
OHL
—
—
50
mA
Input high voltage
PTA0–PTA5, PTB0–PTB7
V
IH
0.7 x V
DD
—
V
DD
V
Input low voltage
PTA0–PTA5, PTB0–PTB7
V
IL
V
SS
—
0.3 x V
DD
V
Input hysteresis
(3)
V
HYS
0.06 x V
DD
—
—
V
DC injection current, all ports
(4)
I
INJ
–2
—
+2
mA
Total dc current injection (sum of all I/O)
(4)
I
INJTOT
–25
—
+25
mA
Ports Hi-Z leakage current
I
IL
–1
±
0.1
+1
μ
A
Capacitance
Ports (as input)
(3)
C
IN
—
—
8
pF
POR rearm voltage
V
POR
0.75
—
—
V
POR rise time ramp rate
(3)(5)
R
POR
0.035
—
—
V/ms
Monitor mode entry voltage
(3)
V
TST
V
DD + 2.5
—
V
DD + 4.0
V
Pullup resistors
(6)
PTA0–PTA5, PTB0–PTB7
R
PU
16
26
36
k
Pulldown resistors
(7)
PTA0–PTA5
R
PD
16
26
36
k
Low-voltage inhibit reset, trip falling voltage
V
TRIPF
2.65
2.8
3.0
V
Low-voltage inhibit reset, trip rising voltage
V
TRIPR
2.75
2.9
3.10
V
Low-voltage inhibit reset/recover hysteresis
V
HYS
—
100
—
mV