S12ECT16B8CV2 datasheet(84/152 Pages) NXP

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MC9S12XDP512 Device User Guide — 9S12XDP512DGV1/D V01.12

2.4.5 VRH, VRL — ATD Reference Voltage Input Pins

VRH and VRL are the reference voltage input pins for the analog to digital converter.

2.4.6 VDDPLL, VSSPLL — Power Supply Pins for PLL

Provides operating voltage and ground for the Oscillator and the Phased-Locked Loop. This allows the

supply voltage to the Oscillator and PLL to be bypassed independently.This 2.5V voltage is generated by

the internal voltage regulator.

NOTE:

No load allowed except for bypass capacitors.

Table 2-2 MC9S12XDP512 Power and Ground Connection Summary

Mnemonic

Pin Number

Nominal

Voltage

Description

144-pin

LQFP

112-pin

LQFP

80-pin QFP

VDD1, 2

15, 87

13, 65

9, 49

2.5 V

Internal power and ground

generated by internal

regulator

VSS1, 2

16, 88

14, 66

10, 50

VDDR1

5.0 V

External power and ground,

supply to pin drivers and

internal voltage regulator

VSSR1

0 V

VDDX1

139

107

5.0 V

External power and ground,

supply to pin drivers

VSSX1

138

106

0 V

VDDX2

N.A.

5.0 V

External power and ground,

supply to pin drivers

VSSX2

N.A.

0 V

VDDR2

N.A.

5.0 V

External power and ground,

supply to pin drivers

VSSR2

N.A.

0 V

VDDA

107

5.0 V

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.

VSSA

110

0 V

VRL

109

0 V

Reference voltages for the

analog-to-digital converter.

VRH

108

5.0 V

VDDPLL

2.5 V

Provides operating voltage and

ground for the

Phased-Locked Loop. This

allows the supply voltage to

the PLL to be bypassed

independently. Internal power

and ground generated by

internal regulator.

VSSPLL

0 V

VREGEN

127

N.A.

Internal Voltage Regulator

enable/disable

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

S12ECT16B8CV2 Datasheet(PDF) 84 Page - NXP Semiconductors

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