Datasheet

Electrical Characteristics
MCF51AC256 ColdFire Microcontroller Data Sheet, Rev.7
Freescale Semiconductor 21
3P
Output low voltage — Low Drive (PTxDSn = 0)
5 V, I
Load
= 4 mA
3 V, I
Load
= 2 mA
5 V, I
Load
= 2 mA
3 V, I
Load
= 1 mA
V
OL
——
1.5
1.5
0.8
0.8
V
Output low voltage — High Drive (PTxDSn = 1)
5 V, I
Load
= 15 mA
3 V, I
Load
= 8 mA
5 V, I
Load
= 8 mA
3 V, I
Load
= 4 mA
——
1.5
1.5
0.8
0.8
4C
Output high current — Max total I
OH
for all ports
5V
3V
I
OHT
——
100
60
mA
5C
Output low current — Max total I
OL
for all ports
5 V
3 V
I
OLT
——
100
60
mA
6 P Input high voltage; all digital inputs V
IH
0.65  V
DD
——V
P Input low voltage; all digital inputs V
IL
— — 0.35  V
DD
V7
D Input hysteresis; all digital inputs V
hys
0.06  V
DD
——mV8
9 P Input leakage current; input only pins
2
|I
In
|—0.1 1A
10 P High impedance (off-state) leakage current
2
|I
OZ
|— 0.1 1A
11 P Internal pullup resistors
3
R
PU
20 45 65 k
12 P Internal pulldown resistors
4
R
PD
20 45 65 k
13 C Input capacitance; all non-supply pins C
In
—— 8pF
14 P POR rearm voltage V
POR
0.9 1.4 2.0 V
15 D POR rearm time t
POR
10 — — s
16 P
Low-voltage detection threshold —
high range
V
DD
falling
V
DD
rising
V
LVD H
4.2
4.27
4.35
4.4
4.5
4.6
V
P
Low-voltage detection threshold —
low range
V
DD
falling
V
DD
rising
V
LVD L
2.48
2.5
2.68
2.7
2.7
2.72
V17
P
Low-voltage warning threshold —
high range
V
DD
falling
V
DD
rising
V
LVW H
4.2
4.27
4.4
4.45
4.5
4.6
V18
19 P
Low-voltage warning threshold
low range
V
DD
falling
V
DD
rising
V
LVW L
2.48
2.5
2.68
2.7
2.7
2.72
V
20 T
Low-voltage inhibit reset/recover hysteresis
5 V
3 V
V
hys
—
100
60
—
mV
21 D RAM retention voltage V
RAM
—0.61.0V
Table 10. DC Characteristics (continued)
Num C Parameter Symbol Min Typical
1
Max Unit