Справочник Пользователя для Freescale Semiconductor Demonstration Board for Freescale MC9S12XHY256 Microcontroller DEMO9S12XHY256 DEMO9S12XHY256
Модели
DEMO9S12XHY256
Device Overview MC9S12XHY-Family
MC9S12XHY-Family Reference Manual, Rev. 1.04
50
Freescale Semiconductor
1.7.4.7
VDDA/VRH / VSSA/VRL — Power Supply Pins for ATD and Voltage
Regulator and ATD Reference Voltage inputs
Regulator and ATD Reference Voltage inputs
These are the power supply and ground input pins for Port AD IO, the analog-to-digital converter and the
voltage regulator. And also server as the reference voltage input pins for the analog-to-digital converter.
voltage regulator. And also server as the reference voltage input pins for the analog-to-digital converter.
1.7.4.8
VDDM[2:1] / VSSM[2:1]— Power Supply Pins for Motor 0 to 3
External power supply pins for the Port U and Port V. VDDM2 and VDDM1 as well as VSSM2 and
VSSM1 are internal connected together.
VSSM1 are internal connected together.
1.7.4.9
VLCD— Power Supply Reference Pin for LCD driver
VLCD is the voltage reference pin for the LCD driver. Adjusting the voltage on this pin will change the
display contrast.
display contrast.
1.7.4.10
Power and Ground Connection Summary
Table 1-8. Power and Ground Connection Summary
Mnemonic
Nominal
Voltage
Description
VDDR
5.0 V
External power supply to internal voltage
regulator
regulator
VDDX[2:1]
5.0 V
External power and ground, supply to pin
drivers
drivers
VSSX[2:1]
0 V
VDDA/VRH
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.AlsorReference
voltages for the analog-to-digital converter.
analog-to-digital converters and the
reference for the internal voltage regulator,
allows the supply voltage to the A/D to be
bypassed independently.AlsorReference
voltages for the analog-to-digital converter.
VSSA/VRL
0 V
VDD
1.8V
Internal power and ground generated by
internal regulator for the internal core.
internal regulator for the internal core.
VSS1/VSS2/
VSS3
0V
VDDF
2.8V
Internal power and ground generated by
internal regulator for the internal NVM.
internal regulator for the internal NVM.
VDDPLL
1.8V
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.
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
0V
VDDM[2:1]
5.0 V
External power and ground, supply to Port
U/V motor drivers
U/V motor drivers
VSSM[2:1]
0 V
VLCD
5.0 V
External voltage reference for the LCD
driver
driver