mc9s12vr48 Freescale Semiconductor, Inc, mc9s12vr48 Datasheet - Page 95

• Manufacturer Part Number: mc9s12vr48
• Description: S12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

voltage divider can be bypassed (PTAL[PTADIRL]=1). Additionally in latter case the impedance
converter in the ADC signal path can be configured to be used or bypassed in direct input mode
(PTAL[PTABYPL]).
In run mode the digital input buffer of the selected pin is disabled to avoid shoot-through current. Thus pin
interrupts cannot be generated.
In stop mode the digital input buffer is enabled only if DIENL[x]=1 to support wakeup functionality.
Table 2-49
1
2.4.3.7
This port is associated with the ADC.
Port AD pins can be used for either general-purpose I/O, or with the ADC subsystem.
2.4.4
This section describes the interrupts generated by the PIM and their individual sources. Vector addresses
and interrupt priorities are defined at MCU level.
Freescale Semiconductor
Enabled if (PTAL[PTTEL]=1 & PTAL[PTADIRL]=0)
Mode
Stop
Run
shows the HVI input configuration depending on register bits and operation mode.
Interrupts
Port AD
An external resistor R
high-voltage inputs to protect the device pins from fast transients and to
achieve the specified pin input divider ratios when using the HVI in analog
mode.
DIENL
0
0
1
1
0
0
1
1
XIRQ
IRQ
Port P pin interrupt
Module Interrupt Sources
PTAENL
MC9S12VR Family Reference Manual, Rev. 2.2
0
1
0
1
0
1
0
1
Preliminary - Subject to Change Without Notice
Table 2-49. HVI Input Configurations
Table 2-50. PIM Interrupt Sources
EXT_HVI
Digital Input
enabled
enabled
enabled
off
off
must always be connected to the
off
off
off
1
1
None
IRQCR[IRQEN]
PIEP[PIEP5-PIEP0]
NOTE
Analog Input
enabled
enabled
off
off
off
off
off
off
Local Enable
Input disabled (Reset)
Analog input, interrupt not supported
Digital input, interrupt supported
Analog input, interrupt not supported
Input disabled, wakeup from stop not
supported
Digital input, wakeup from stop supported
Port Integration Module (S12VRPIMV2)
Resulting Function
95