mc9s12uf32 Freescale Semiconductor, Inc, mc9s12uf32 Datasheet - Page 97

• Manufacturer Part Number: mc9s12uf32
• Description: System Chip Guide V01.05
• Manufacturer: Freescale Semiconductor, Inc

Appendix A Electrical Characteristics
A.1 General
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.
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 MC9S12UF32 utilizes several pins to supply power to the I/O ports, the oscillator, USB physical layer
interface as well as the digital core.
The VDDX, VSSX pair supplies the 3.3V/5V I/O pins of ports A, B, R, S, and U.
The VDD3X, VSS3X pair supplies the 3.3V/5V I/O pins of ports J, M, Q, P, and T.
The VDDR, VSSR pair supplies the internal voltage regulator and 5V only I/O pins.
VDD is the output supply pin for the core digital logic, generated by the on-chip regulator.
VDDA, VSSA and VSSA1 are output supply pins for the USB physical layer interface I/O pins, supplied
by the on-chip regulator.
VSS3X and VSSX are connected by anti-parallel diodes for ESD protection.
VSS3X and VSSR are connected by anti-parallel diodes for ESD protection.
VSSA1 and VSSR are connected by anti-parallel diodes for ESD protection.
Freescale Semiconductor
NOTE:
NOTE:
This classification will be added at a later release of the specification
IDD3 denotes the currents flowing into VDD3X
IDDR denotes the currents flowing into the VDDR
IDDX denotes the current flowing into VDDX
System on a Chip Guide — 9S12UF32DGV1/D V01.05
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