TWR-MCF51MM Freescale Semiconductor, TWR-MCF51MM Datasheet - Page 22
TWR-MCF51MM
Manufacturer Part Number
TWR-MCF51MM
Description
TOWER SYSTEM BOARD MCF51MM
Manufacturer
Freescale Semiconductor
Series
ColdFire®, Flexis™r
Type
MCUr
Specifications of TWR-MCF51MM
Contents
Board, 3 Modules, MED-EKG Kit, Cables, Documentation, DVD
Product
Microcontroller Modules
Data Bus Width
32 bit
Core Processor
MCF51MM
Clock Speed
32 KHz
Interface Type
RS232, RS485, CAN , USB
Flash
256 KB
Operating Supply Voltage
3.3 V
Silicon Manufacturer
Freescale
Core Architecture
Coldfire
Core Sub-architecture
Coldfire V1
Silicon Core Number
MCF51
Silicon Family Name
Flexis - MCF51MM
Rohs Compliant
Yes
For Use With/related Products
Freescale Tower System, MCF51MM
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Electrical Characteristics
22
Freescale reserves the right to change the detail specifications as may be required to permit improvements in the design of its products.
1
2
3
4
5
6
7
8
9
10
11
Num Symbol
20
21
22
23
Typical values are measured at 25C. Characterized, not tested
As the supply voltage rises, the LVD circuit will hold the MCU in reset until the supply has risen above V
Does not include analog module pins. Dedicated analog pins should not be pulled to V
used to reduce current leakage.
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
If positive injection current (V
supply going out of regulation. Ensure external V
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.
Run at 1 MHz bus frequency
Low voltage detection and warning limits measured at 1 MHz bus frequency.
Factory trimmed at V
V
V
V
V
LVWH
LVWL
hys
BG
Low-voltage
warning
threshold —
high range
Low-voltage
warning
threshold —
low range
Low-voltage inhibit
reset/recoverhysteresis
Bandgap Voltage Reference
In
= V
DD
DD
= 3.0 V, Temp = 25C
.
9
Characteristic
9
In
> V
DD
) is greater than I
Table 9. DC Characteristics (continued)
V
V
V
V
DD
DD
DD
DD
10
falling
rising
falling
rising
11
DD
load will shunt current greater than maximum injection current. This will be the
DD
, the injection current may flow out of V
DD
SS
range during instantaneous and operating maximum current conditions.
and V
Condition
—
—
—
—
—
—
DD
except PTD1.
1.110
2.36
2.36
2.11
2.16
Min
—
DD
or V
SS
DD
Typ
2.46
2.46
2.16
2.21
1.17
and should be left floating when not
50
and could result in external power
1
LVDL
1.230
Max
2.56
2.56
2.22
2.27
—
Freescale Semiconductor
.
Unit
mV
V
V
V
V
V
C
C
P
P
P
P
P