TWR-MCF51JE Freescale Semiconductor, TWR-MCF51JE Datasheet - Page 21

• Manufacturer Part Number: TWR-MCF51JE
• Description: TOWER SYSTEM BOARD MCF51JE
• Manufacturer: Freescale Semiconductor
• Series: ColdFire®, Flexis™r
• Type: MCUr

Specifications of TWR-MCF51JE

• Contents: Board
• Data Bus Width: 32 bit
• Interface Type: RS-232, RS-485, Ethernet, CAN, USB
• Silicon Manufacturer: Freescale
• Core Architecture: Coldfire
• Core Sub-architecture: Coldfire V1
• Silicon Core Number: MCF51J
• Silicon Family Name: Flexis - MCF51JE
• Rohs Compliant: Yes
• For Use With/related Products: Freescale Tower System, MCF51JE
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Freescale Semiconductor
1
2
3
4
5
6
7
Num Symbol
19
20
21
22
23
24
Typical values are measured at 25°C. Characterized, not tested
As the supply voltage rises, the LVD circuit will hold the MCU in reset until the supply has risen above V
Measured with V
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
result in external power supply going out of regulation. Ensure external V
injection 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.
V
V
V
V
LVDH
V
V
LVWH
LVWL
LVDL
hys
BG
8
Low-voltage
detection
threshold —
high range
Low-voltage
detection
threshold —
low range
Low-voltage
warning
threshold —
high range
Low-voltage
warning
threshold —
low range
Low-voltage inhibit
reset/recoverhysteresis
Bandgap Voltage Reference
In
= V
DD
.
8
8
Characteristic
8
Table 9. DC Characteristics (Continued)
Preliminary — Subject to Change
V
V
V
V
V
V
V
V
DD
DD
DD
DD
DD
DD
DD
DD
In
> V
9
falling
rising
falling
rising
falling
rising
falling
rising
DD
10
) is greater than I
DD
SS
Condition
range during instantaneous and operating maximum current
and V
—
—
—
—
—
—
—
—
—
—
DD
DD
, the injection current may flow out of V
.
DD
1.145
2.11
2.16
1.80
1.86
2.36
2.36
2.11
2.16
Min
load will shunt current greater than maximum
—
Typ
2.16
2.21
1.82
1.90
2.46
2.46
2.16
2.21
1.17
50
Preliminary Electrical Characteristics
1
1.195
Max
2.22
2.27
1.91
1.99
2.56
2.56
2.22
2.27
—
LVDL
Unit
mV
V
V
V
V
V
V
V
V
V
DD
.
and could
C
P
P
P
P
P
P
P
P
C
P
1-2