
5-V DC Electrical Characteristics
MC68HC908QL4 MC68HC908QL3 MC68HC908QL2 Data Sheet, Rev. 6
Freescale Semiconductor
205
17.5 5-V DC Electrical Characteristics
Characteristic(1)
1. VDD = 4.5 to 5.5 Vdc, VSS = 0 Vdc, TA = TL to TH, unless otherwise noted.
Symbol
Min
Typ(2)
2. Typical values reflect average measurements at midpoint of voltage range, 25°C only.
Max
Unit
Output high voltage
ILoad = –2.0 mA, all I/O pins
ILoad = –10.0 mA, all I/O pins
ILoad = –15.0 mA, PTA0, PTA1, PTA3–PTA5 only
VOH
VDD–0.4
VDD–1.5
VDD–0.8
—
V
Maximum combined IOH (all I/O pins)
IOHT
——
50
mA
Output low voltage
ILoad = 1.6 mA, all I/O pins
ILoad = 10.0 mA, all I/O pins
ILoad = 15.0 mA, PTA0, PTA1, PTA3–PTA5 only
VOL
—
0.4
1.5
0.8
V
Maximum combined IOL (all I/O pins)
IOHL
——
50
mA
Input high voltage
PTA0–PTA5, PTB0–PTB7
VIH
0.7 x VDD
—VDD
V
Input low voltage
PTA0–PTA5, PTB0–PTB7
VIL
VSS
—
0.3 x VDD
V
Input hysteresis(3)
3. Values are based on characterization results, not tested in production.
VHYS
0.06 x VDD
——
V
DC injection current, all ports(4)
4. Guaranteed by design, not tested in production.
IINJ
–2
—
+2
mA
Total dc current injection (sum of all
I/O)(4)IINJTOT
–25
—
+25
mA
Ports Hi-Z leakage current
IIL
–1
±0.1
+1
A
Capacitance
CIN
——
8
pF
POR rearm voltage
VPOR
750
—
mV
5. If minimum VDD is not reached before the internal POR reset is released, the LVI will hold the part in reset until minimum
VDD is reached.
RPOR
0.035
—
V/ms
Monitor mode entry voltage
(3)VTST
VDD + 2.5
—9.1
V
Pullup resistors(6)
PTA0–PTA5, PTB0–PTB7
6. RPU is measured at VDD = 5.0 V. Pullup resistors only available when PTAPUEx is enabled with KBIPx = 0.
RPU
16
26
36
k
Pulldown resistors(7)
PTA0–PTA5
7. RPD is measured at VDD = 5.0 V, Pulldown resistors only available when PTAPUEx is enabled with KBIPx =1.
RPD
16
26
36
k
Low-voltage inhibit reset, trip falling voltage
VTRIPF
3.90
4.20
4.50
V
Low-voltage inhibit reset, trip rising voltage
VTRIPR
4.00
4.30
4.60
V
Low-voltage inhibit reset/recover hysteresis
VHYS
—
100
—
mV