mc9s12xf512 Freescale Semiconductor, Inc, mc9s12xf512 Datasheet - Page 1180

• Manufacturer Part Number: mc9s12xf512
• Description: S12x Microcontrollers 16-bit Automotive Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Appendix A Electrical Characteristics
The VDDX, VSSX pin pairs [4:1] supply the I/O pins.
VDDR supplies the internal voltage regulator.
The VDDF
The VDD, VSS2 are the supply pins for the internal digital logic.
VDDPLL, VSSPLL pin pair supply the oscillator and the PLL.
VSS1, VSS2 and VSS3 are internally connected by metal.
All VDDX pins are internally connected by metal.
All VSSX pins are internally connected by metal.
VDDA is connected to all VDDX pins by diodes for ESD protection such that VDDX must not exceed
VDDA by more than a diode voltage drop. VDDA can exceed VDDX by more than a diode drop in order
to support applications with a 5V A/D converter range and 3.3V I/O pin range.
VSSA and VSSX are connected by anti-parallel diodes for ESD protection.
A.1.3
There are four groups of functional pins.
A.1.3.1
Those I/O pins have a level in the range of 3.13V to 5.5 V. This class of pins is comprised of all port I/O
pins, the analog inputs, BKGD and the RESET pins.The internal structure of all those pins is identical;
however, some of the functionality may be disabled. For example the BKGD pin pull up is always enabled.
A.1.3.2
This group is made up by the V
1180
,
Pins
VSS1 pin pair supplies the internal NVM logic.
I/O Pins
Analog Reference
Connecting VDDR to VSS disables the internal voltage regulator.
In the following context V
VDDX; V
I
pins.
V
V
I
VDDPLL.
DD35
DD
DD
DDPLL
is used for the sum of the currents flowing into VDD, VDDF and
is used for VDD, V
denotes the sum of the currents flowing into the VDDA and VDDR
is used for VDDPLL, V
SS35
is used for either VSSA and VSSX unless otherwise noted.
MC9S12XF - Family Reference Manual, Rev.1.19
RH
and V
SS
RL
DD35
is used for VSS1, VSS2 and VSS3.
pins.
is used for either VDDA, VDDR, and
SSPLL
NOTE
NOTE
is used for VSSPLL
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