參數(shù)資料
型號: 9S12H256BDGV1
英文描述: 9S12H256B Device Guide
中文描述: 9S12H256B設備指南
文件頁數(shù): 89/130頁
文件大?。?/td> 2171K
代理商: 9S12H256BDGV1
89
Appendix A Electrical Characteristics
A.1 General
This supplement contains the most accurate electrical information for the MC9S12H256 and
MC9S12H128 microcontroller available at the time of publication.
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.
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.
A.1.2 Power Supply
TheMC9S12H256utilizesseveralpinstosupplypowertotheI/Oports,A/Dconverter,oscillatorandPLL
as well as the digital core.
TheVDDA,VSSApairsuppliestheA/Dconverterandtheresistorladderoftheinternalvoltageregulator.
The VDDX1/VSSX1 and VDDX2/VSSX2 pairs supply the I/O pins except PH, PU, PV and PW. VDDR
supplies the internal voltage regulator.
VDDM1/VSSM1, VDDM2/VSSM2 and VDDM3/VSSM3 pairs supply the ports PH, PU, PV and PW.
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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