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| 型號： | 9S12KT256DGV1 |
| 英文描述： | MC9S12KT256 Device User Guide |
| 中文描述： | MC9S12KT256設備用戶指南 |
| 文件頁數(shù)： | 83/126頁 |
| 文件大?。?/td> | 7307K |
| 代理商： | 9S12KT256DGV1 |
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Device User Guide — 9S12KT256DGV1/D V01.09
83
Freescale Semiconductor
Appendix A Electrical Characteristics
A.1 General
NOTE:
The electrical characteristics given in this section are preliminary and should be
used as a guide only. Values cannot be guaranteed by Motorola and are subject to
change without notice.
This supplement contains the most accurate electrical information for the MC9S12K-Family of
microcontrollers available at the time of publication. The information should be considered
PRELIMINARY
and is subject to change.
This introduction is intended to give an overview on several common topics like power supply, current
injection etc.
A.1.1 Parameter Classification
The electrical parameters shown in this supplement are guaranteed by various methods. To give the
customer a better understanding the following classification is used and the parameters are tagged
accordingly in the tables where appropriate.
NOTE:
This classification is shown in the column labeled “C” in the parameter tables
where appropriate.
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. They are regularly verified by production monitors.
T:
Those parameters are achieved by design characterization on a small sample size from typical
devices. All values shown in the typical column are within this category.
D:
Those parameters are derived mainly from simulations.
A.1.2 Power Supply
The MC9S12K-Family utilizes several pins to supply power to the I/O ports, A/D converter, oscillator,
PLL and internal logic.
The VDDA, VSSA pair supplies the A/D converter.
The VDDX, VSSX pair supplies the I/O pins
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