S9S12XS256J0CAL Datasheet, PDF (658/738 Pages) Freescale Semiconductor, Inc – Microcontrollers

Electrical Characteristics
The VDDX, VSSX pin pairs [2:1] supply the I/O pins.
VDDR supplies the internal voltage regulator.
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.
NOTE
In the following context V_DD35 is used for either VDDA, VDDR, and
VDDX; V_SS35 is used for either VSSA and VSSX unless otherwise noted.
I_DD35 denotes the sum of the currents flowing into the VDDA and VDDR
pins. The Run mode current in the VDDX domain is external load
dependent.
V_DD is used for VDD, V_SS is used for VSS1, VSS2 and VSS3.
V_DDPLL is used for VDDPLL, V_SSPLL is used for VSSPLL
I_DD is used for the sum of the currents flowing into VDD, VDDF and
VDDPLL.
A.1.3 Pins
There are four groups of functional pins.
A.1.3.1 I/O Pins
The I/O pins have a level in the range of 3.13V to 5.5V. This class of pins is comprised of all port I/O pins,
the analog inputs, BKGD and the RESET pins. Some functionality may be disabled. For example the
BKGD pin pull up is always enabled.
A.1.3.2 Analog Reference
This group is made up by the V_RH and V_RL pins.
A.1.3.3 Oscillator
The pins EXTAL, XTAL dedicated to the oscillator have a nominal 1.8V level. They are supplied by
VDDPLL.
S12XS Family Reference Manual, Rev. 1.13
658
Freescale Semiconductor