mcf51qe128 Freescale Semiconductor, Inc, mcf51qe128 Datasheet - Page 13

• Manufacturer Part Number: mcf51qe128
• Description: Mcf51qe Flexis 32-bit Coldfire? V1 Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

1
2
3
4
5
6
Num C
Freescale Semiconductor
12
13
14
15
16
17
18
19
20
21
22
Typical values are measured at 25°C. Characterized, not tested
All functional non-supply pins are internally clamped to V
Input must be current limited to the value specified. To determine the value of the required current-limiting resistor, calculate
resistance values for positive and negative clamp voltages, then use the larger of the two values.
Power supply must maintain regulation within operating V
conditions. If positive injection current (V
in external power supply going out of regulation. Ensure external V
current. This will be the greatest risk when the MCU is not consuming power. Examples are: if no system clock is present, or if
clock rate is very low (which would reduce overall power consumption).
Maximum is highest voltage that POR is guaranteed.
Factory trimmed at V
40
35
30
25
20
1.8
D
C Input Capacitance, all pins
C RAM retention voltage
C POR re-arm voltage
D POR re-arm time
P
P
P
P
P Low-voltage inhibit reset/recover hysteresis
P Bandgap Voltage Reference
DC injection
current
Low-voltage detection threshold —
high range
Low-voltage detection threshold —
low range
Low-voltage warning threshold —
high range
Low-voltage warning threshold —
low range
2
2.2
2, 3, 4
PULL-UP RESISTOR TYPICALS
2.4
DD
Characteristic
2.6
= 3.0 V, Temp = 25°C
V
DD
Total MCU limit, includes
sum of all stressed pins
5
2.8
(V)
Figure 4. Pull-up and Pull-down Typical Resistor Values
MCF51QE128 Series Advance Information Data Sheet, Rev. 4
3
6
Single pin limit
Table 8. DC Characteristics (continued)
3.2
In
> V
3.4
–40°C
DD
85°C
25°C
) is greater than I
3.6
Symbol
V
V
V
V
V
V
t
V
V
LVWH
POR
LVWL
C
LVDH
LVDL
I
RAM
POR
IC
hys
BG
SS
In
DD
and V
range during instantaneous and operating maximum current
V
IN
DD
DD
40
35
30
25
20
DD
< V
1.8
V
V
V
V
Condition
, the injection current may flow out of V
V
V
V
V
.
DD
DD
DD
DD
DD
DD
DD
DD
load will shunt current greater than maximum injection
SS
, V
falling
falling
falling
falling
rising
rising
rising
rising
IN
> V
2.3
PULL-DOWN RESISTOR TYPICALS
DD
–0.2
2.08
2.16
1.80
1.88
2.36
2.36
2.08
2.16
1.19
Min
V
0.9
–5
10
—
—
—
DD
(V)
2.8
Electrical Characteristics
Typ
2.19
1.82
1.90
2.46
2.46
2.19
1.20
0.6
1.4
2.1
2.1
80
—
—
—
—
1
DD
3.3
and could result
–40°C
Max
2.27
1.91
1.99
2.56
2.56
2.27
1.21
85°C
25°C
0.2
1.0
2.0
2.2
2.2
—
—
5
8
3.6
Unit
mA
mA
mV
pF
μs
V
V
V
V
V
V
V
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