Electrical Characteristics
2
Electrical Characteristics
This section contains electrical specification tables and reference timing diagrams for the microcontroller unit, including
detailed information on power considerations, DC/AC electrical characteristics, and AC timing specifications.
The electrical specifications are preliminary and are from previous designs or design simulations. These specifications may not
be fully tested or guaranteed at this early stage of the product life cycle. These specifications will, however, be met for
production silicon. Finalized specifications will be published after complete characterization and device qualifications have
been completed.
NOTE
The parameters specified in this data sheet supersede any values found in the module
specifications.
2.1
Maximum Ratings
1, 2
Table 6. Absolute Maximum Ratings
Rating
Symbol
Value
Unit
Supply voltage
VDD
VDDPLL
VSTBY
VDDUSB
VIN
–0.3 to +4.0
–0.3 to +4.0
+1.8 to 3.5
–0.3 to +4.0
–0.3 to +4.0
0 to 3.3
V
V
Clock synthesizer supply voltage
RAM standby supply voltage
USB standby supply voltage
Digital input voltage 3
V
V
V
EXTAL pin voltage
VEXTAL
VXTAL
IDD
V
XTAL pin voltage
0 to 3.3
V
Instantaneous maximum current
25
mA
Single pin limit (applies to all pins)4, 5
Operating temperature range (packaged)
TA
(TL - TH)
–40 to 85 or
0 to 706
°C
°C
Storage temperature range
Tstg
–65 to 150
1
2
Functional operating conditions are given in DC Electrical Specifications. Absolute Maximum Ratings
are stress ratings only, and functional operation at the maxima is not guaranteed. Stress beyond
those listed may affect device reliability or cause permanent damage to the device.
This device contains circuitry protecting against damage due to high static voltage or electrical fields;
however, it is advised that normal precautions be taken to avoid application of any voltages higher
than maximum-rated voltages to this high-impedance circuit. Reliability of operation is enhanced if
unused inputs are tied to an appropriate logic voltage level (VSS or VDD).
3
Input must be current limited to the IDD 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.
4
5
All functional non-supply pins are internally clamped to VSS and VDD
.
The power supply must maintain regulation within operating VDD range during instantaneous and
operating maximum current conditions. If positive injection current (Vin > VDD) is greater than IDD, the
injection current may flow out of VDD and could result in the external power supply going out of
regulation. Ensure that the external VDD load shunts current greater than maximum injection current.
This is the greatest risk when the MCU is not consuming power (e.g., no clock).
6
Depending on the packaging; see the orderable part number summary.
MCF52259 ColdFire Microcontroller, Rev. 0
28
Freescale Semiconductor
FREESCALE [ Freescale ]
