5-V DC Electrical Characteristics
MC68HC08LT8 Data Sheet, Rev. 1
Freescale Semiconductor
145
16.5 5-V DC Electrical Characteristics
Table 16-4. DC Electrical Characteristics (5V)
Characteristic
(1)
1. V
DD
= 4.5 to 5.5 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. Run (operating) I
DD
measured using external square wave clock source (f
OP
= 4MHz). All inputs 0.2V from rail. No dc loads.
Less than 100 pF on all outputs. C
L
= 20 pF on OSC2. All ports configured as inputs. OSC2 capacitance linearly affects
run I
DD
. Measured with all modules enabled.
4. Wait I
DD
measured using external square wave clock source (f
OP
= 4MHz). All inputs 0.2V from rail. No dc loads. Less than
100 pF on all outputs. C
L
= 20 pF on OSC2. All ports configured as inputs. OSC2 capacitance linearly affects wait I
DD
.
5. Stop I
DD
measured with OSC1 grounded; no port pins sourcing current.
6. Maximum is highest voltage that POR is guaranteed.
7. If minimum V
DD
is not reached before the internal POR reset is released, RST must be driven low externally until minimum
V
DD
is reached.
8. R
PU
is measured at V
DD
= 5.0V.
Symbol
Min
Typ
(2)
Max
Unit
Output high voltage (I
LOAD
= –1.6mA)
All ports
V
OH
V
DD
–0.7
—
—
V
Output low voltage
(I
LOAD
= 2mA) All ports except PTB2–PTB3
(I
LOAD
= 15mA) PTB2–PTB3
Input high voltage
All ports, RST, IRQ, OSC1
V
OL
—
—
0.7
V
V
IH
0.7
×
V
DD
—
V
DD
V
Input low voltage
All ports, RST, IRQ, OSC1
V
IL
V
SS
—
0.3
×
V
DD
V
V
DD
supply current, f
OP
= 4MHz (R
LCD
= 146k
)
Run
(3)
with all modules on
Wait
(4)
with all modules off (except PPI, LCD, and LVI)
Stop
(5)
–40 to 85
°
C (All modules off)
25
°
C (XTAL, LCD, PPI enabled)
25
°
C (XTAL, LCD, PPI, LVI enabled)
25
°
C (XTAL, LCD, PPI, LVI, OSC enabled)
I
DD
—
—
—
—
—
—
5
3
0.3
25
175
1.5
12
6
1
50
190
3
mA
mA
μ
A
μ
A
μ
A
mA
Digital I/O ports Hi-Z leakage current
I
IL
I
IN
—
—
±
10
μ
A
Input current
—
—
±
1
μ
A
Capacitance
Ports (as input or output)
C
OUT
C
IN
—
—
—
—
12
8
pF
POR rearm voltage
(6)
V
POR
750
—
—
mV
POR rise time ramp rate
(7)
R
POR
0.035
—
—
V/ms
Monitor mode entry voltage
V
TST
V
DD
+ 2.5
—
9.1
V
Pullup resistors
(8)
PTA0–PTA3 as KBI0–KBI3, RST, IRQ
R
PU
50
100
200
k
Low-voltage inhibit, trip falling voltage
V
TRIPF
V
TRIPR
V
HYS
3.90
4.20
4.50
V
Low-voltage inhibit, trip rising voltage
3.95
4.30
4.60
V
Low-voltage inhibit reset/recovery hysteresis
—
100
—
mV