PXD20 Datasheet, PDF (62/130 Pages) Freescale Semiconductor, Inc – PXD20 Microcontroller

Electrical characteristics
4 Electrical characteristics
4.1 Introduction
This section contains electrical characteristics of the device as well as temperature and power considerations.
This product contains devices to protect the inputs against damage due to high static voltages. However, it is advisable to take
precautions to avoid application of any voltage higher than the specified maximum rated voltages.
To enhance reliability, unused inputs can be driven to an appropriate logic voltage level (V_DD or V_SS). This could be done by
internal pull up and pull down, which is provided by the product for most general purpose pins.
The parameters listed in the following tables represent the characteristics of the device and its demands on the system.
In the tables where the device logic provides signals with their respective timing characteristics, the symbol “CC” for Controller
Characteristics is included in the Symbol column.
In the tables where the external system must provide signals with their respective timing characteristics to the device, the symbol
“SR” for System Requirement is included in the Symbol column.
4.2 Parameter classification
The electrical parameters shown in this supplement are guaranteed by various methods. To give the
customer a better understanding, the classifications listed in Table 8 are used and the parameters are tagged
accordingly in the tables where appropriate.
Table 8. Parameter classifications
Classification tag
Tag description
P
Those parameters are guaranteed during production testing on each individual device.
C
Those parameters are achieved by the design characterization by measuring a statistically
relevant sample size across process variations.
T
Those parameters are achieved by design characterization on a small sample size from typical
devices under typical conditions unless otherwise noted. All values shown in the typical column
are within this category.
D
Those parameters are derived mainly from simulations.
NOTE
The classification is shown in the column labeled “C” in the parameter
tables where appropriate.
PXD20 Microcontroller Data Sheet, Rev. 2
62
Preliminary—Subject to Change Without Notice
Freescale Semiconductor