
MC68HC08SR12
MC68HC908SR12MC68HC08SR12 — Rev. 5.0
Data Sheet
Freescale Semiconductor
MC68HC08SR12
399
A.8.2 3.0V DC Electrical Characteristics
Pullup resistors
(8)
PTD[0:7] configured as KBI[0:7]
RST, IRQ1, IRQ2
R
PU1
R
PU2
24
24
35
35
42
42
k
k
Low-voltage inhibit, trip falling voltage
V
LVII5
3.80
4.15
4.45
V
Low-voltage inhibit, trip rising voltage
V
LVII5
3.95
4.30
4.60
V
Schmitt trigger input low level trip voltage
RST, IRQ1, IRQ2, KBI[0:7]
V
SCMTL
—
1.21
—
V
Schmitt trigger input high level trip voltage
RST, IRQ1, IRQ2, KBI[0:7]
V
SCMTH
—
1.65
—
V
Notes
:
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. All inputs 0.2 V 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. All inputs 0.2 V 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
PU1
and
R
PU2
are measured at
V
DD
= 5.0V
Table A-3. 3V DC Electrical Characteristics
Characteristic
(1)
Symbol
Min
Typ
(2)
Max
Unit
Output high voltage (I
LOAD
= –1.0mA)
PTA[0:7], PTB[4:6], PTC[0:7], PTD[0:7]
V
OH
V
DD
–0.4
—
—
V
Output low voltage (I
LOAD
= 0.8mA)
PTA[0:7], PTB[0:6], PTC[0:7], PTD[0:7]
V
OL
—
—
0.4
V
LED sink current (V
Drain
= 2.0V)
PTA[0:5], PTC[3:7]
V
OL
—
–5
—
mA
Input high voltage
PTA[0:7], PTB[0:6], PTC[0:7], PTD[0:7], RST, IRQ1,
IRQ2, OSC1
V
IH
0.7
×
V
DD
—
V
DD
V
Input low voltage
PTA[0:7], PTB[0:6], PTC[0:7], PTD[0:7], RST, IRQ1,
IRQ2, OSC1
V
IL
V
SS
—
0.3
×
V
DD
V
Table A-2. 5V DC Electrical Characteristics
Characteristic
(1)
Symbol
Min
Typ
(2)
Max
Unit