MC9S12G FREESCALE [Freescale Semiconductor, Inc], MC9S12G Datasheet - Page 48

• Manufacturer Part Number: MC9S12G
• Description: Ignores external trigger. Performs one conversion sequence and stops.
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Device Overview MC9S12G-Family
1.7.3
MC9S12G power and ground pins are described below. Because fast signal transitions place high,
short-duration current demands on the power supply, use bypass capacitors with high-frequency
characteristics and place them as close to the MCU as possible.
1.7.3.1
External power and ground for I/O drivers. Bypass requirements depend on how heavily the MCU pins are
loaded. All VDDX pins are connected together internally. All VSSX pins are connected together
internally.
1.7.3.2
Power supply input to the internal voltage regulator.
1.7.3.3
The voltage supply of nominally 1.8V is derived from the internal voltage regulator. The return current
path is through the VSS pin.
1.7.3.4
These are the power supply and ground input pins for the digital-to-analog converter, the analog
comparator, the reference voltage attenuator, the analog-to-digital converter and the voltage regulator.
1.7.3.5
V
converter. Refer to
48
RH
This document is valid for the S12G96 and the S12G128 device. All information related to other devices is preliminary.
is the reference voltage input pin for the digital-to-analog converter and the analog-to-digital
Power Supply Pins
VDDX[3:1]/VDDX, VSSX[3:1]/VSSX— Power and Ground Pins for I/O Drivers
VDDR — Power Pin for Internal Voltage Regulator
VSS — Core Ground Pin
VDDA, VSSA — Power Supply Pins for DAC,ACMP, RVA, ADC and
Voltage Regulator
VRH — Reference Voltage Input Pin
All ground pins must be connected together in the application.
Not all VDDX[3:1]/VDDX and VSSX[3:1]VSSX pins are available on all
packages. Refer to section
On some packages VDDR is bonded to VDDX and the pin is named
VDDXR. Refer to section
On some packages VDDA is connected with VDDXR and the common pin
is named VDDXRA.
Also the VSSA is connected to VSSX and the common pin is named
VSSXA. See section
Section 1.18, “ADC VRH/VRL Signal
MC9S12G Family Reference Manual,
Section 1.8, “Device
1.8 Device Pinouts
1.8 Device Pinouts
NOTE
NOTE
NOTE
NOTE
Pinouts”
Connection”
for further details.
for further details.
Rev.1.01
for further details.
for further details.
Freescale Semiconductor