MC9S12XF512 Datasheet, PDF (64/1300 Pages) Freescale Semiconductor, Inc – S12X Microcontrollers

Chapter 1 MC9S12XF-Family Reference Manual
1.2.9.5 VDDA, VSSA — Power Supply Pins for ATD and VREG
VDDA, VSSA are the power supply and ground input pins for the voltage regulator and the analog to
digital converters.
1.2.9.6 VRH, VRL — ATD Reference Voltage Input Pins
VRH and VRL are the reference voltage input pins for the analog to digital converter.
1.2.9.7 VDDPLL, VSSPLL — Power Supply Pins for PLL
These pins provide operating voltage and ground for the oscillator and the phased-locked loop. The voltage
supply of nominally 1.8V is derived from the internal voltage regulator when enabled. This allows the
supply voltage to the oscillator and PLL to be bypassed independently. This voltage is generated by the
internal voltage regulator. No static external loading of these pins is permitted.
NOTE
Connecting additional load to this pin is not permitted when the internal
regulator is enabled.
Mnemonic
VDDF
VDD
VSS1, 2, 3
VDDR
VDDX1
VSSX1
VDDX2
VSSX2
VDDX3
VSSX3
VDDX4
VSSX4
VDDA
VSSA
Table 1-11. MC9S12XF512 Power and Ground Connection Summary
144-pin
LQFP⁽¹⁾
14
89
15, 90, 52
53
134
133
50
52
17
16
69
70
107
110
Pin Number
112-pin LQFP 64-pin LQFP
Nominal
Voltage
Description
14
7
65
15, 66, 42
43
104
103
40
41
17
16
—
—
83
86
37
8, 38, 22
23
60
59
20
21
—
—
—
—
47
50
2.8 V
1.8 V
0V
5.0 V
5.0 V
0V
5.0 V
0V
5.0 V
0V
5.0 V
0V
5.0 V
0V
Internal power and ground
generated by internal regulator for
the internal NVM.
Internal power and ground
generated by internal regulator for
the internal core.
External power supply internal
voltage regulator
External power and ground, supply
to pin drivers
External power and ground, supply
to pin drivers
External power and ground, supply
to pin drivers
External power and ground, supply
to pin drivers
Operating voltage and ground for
the analog-to-digital converters
and the reference for the internal
voltage regulator, allows the supply
voltage to the A/D to be bypassed
independently.
MC9S12XF - Family Reference Manual, Rev.1.18
66
Freescale Semiconductor