Analog Integrated Circuit Device Data
Freescale Semiconductor 11
MM912_P812
PIN CONNECTIONS
MCU 76 PAD09
VSS2
(10)
A/D Input
Ground
(10)
PAD09 ON S12P
Ground of 3.3 V
regulator
(10)
PAD09 is the general purpose input or output pin and analog input of the
analog-to-digital converter, A/D Use voltage divider if necessary, and
ESD protection capacitor. Use of low pass filter as necessary.
(Only on S12P, not on S12XEP100)
See description of VDD above. Only on S12XEP100
(9)
MCU 77 PAD00 A/D Input PAD00
PAD00 is the general purpose input or output pin and analog input AN0
of the analog-to-digital converter, A/D. Use voltage divider if necessary,
and ESD protection capacitor. Use of low pass filter as necessary.
MCU 78 PAD01 A/D Input PAD01
PAD01 is the general purpose input or output pin and analog input AN1
of the analog-to-digital converter, A/D. Use voltage divider if necessary,
and ESD protection capacitor. Use of low pass filter as necessary.
MCU 79 PAD02 A/D Input PAD02
PAD02 is the general purpose input or output pin and analog input AN2
of the analog-to-digital converter, A/D. Use voltage divider if necessary,
and ESD protection capacitor. Use of low pass filter as necessary.
MCU 80 PAD03 A/D Input PAD03
PAD03 is the general purpose input or output pin and analog input AN3
of the analog-to-digital converter, A/D. Use voltage divider if necessary,
and ESD protection capacitor. Use of low pass filter as necessary.
MCU 81 PAD04 A/D Input PAD04
PAD04 is the general purpose input or output pin and analog input AN4
of the analog-to-digital converter, A/D. Use voltage divider if necessary,
and ESD protection capacitor. Use of low pass filter as necessary.
MCU 82 PAD05 A/D Input PAD05
PAD05 is the general purpose input or output pin and analog input AN5
of the analog-to-digital converter, A/D. Use voltage divider if necessary,
and ESD protection capacitor. Use of low pass filter as necessary.
MCU 83 PAD06 A/D Input PAD06
PAD06 is the general purpose input or output pin and analog input AN6
of the analog-to-digital converter, A/D. Use voltage divider if necessary,
and ESD protection capacitor. Use of low pass filter as necessary.
MCU 84 PAD07 A/D Input PAD07
PAD07 is the general purpose input or output pin and analog input AN7
of the analog-to-digital converter, A/D. Use voltage divider if necessary,
and ESD protection capacitor. Use of low pass filter as necessary.
MCU 85 VDDA Supply
Input
VDDA
This is the power supply input pin for the analog-to-digital converter and
the voltage regulator. Connect to VCC and use a bypass capacitor,
100 nF to Ground.
MCU 86 VRH Supply
Input
VRH
VRH and VRL are the reference voltage input pins for the analog-to-
digital converter. Connect to VCC and use a bypass capacitor, 100 nF to
Ground.
MCU 87 VRL Supply
Input
VRL
VRH and VRL are the reference voltage input pins for the analog-to-
digital converter. Connect to Ground.
MCU 88 VSSA Ground VSSA
This is the ground input pin for the analog-to-digital converter and the
voltage regulator. Connect to Ground.
MCU 89 PS0/RXD I/O PS0/
RXD (SCI)
Port S, I/O pin 0 is a general purpose input or output pin. It can be
configured as the receive pin RXD of serial communication interface
(SCI).
If used for ISO9141 connect to pin 4, MRX.
Notes
10. S12XEP100 signal noted for reuse of PC board for the calibration device.
Table 4. MM912_P812 Pin Definitions
Analog
or MCU
Pin Pin Name
Pin
Function
Formal Name Description and Recommendations
