S912XET512J3VALR Freescale Semiconductor, S912XET512J3VALR Datasheet - Page 133
S912XET512J3VALR
Manufacturer Part Number
S912XET512J3VALR
Description
16-bit Microcontrollers - MCU 16 BIT,512K FLASH
Manufacturer
Freescale Semiconductor
Datasheet
1.S912XEG128J2MAL.pdf
(1324 pages)
Specifications of S912XET512J3VALR
Rohs
yes
Core
HCS12X
Processor Series
MC9S12XE
Data Bus Width
16 bit
Maximum Clock Frequency
50 MHz
Program Memory Size
512 KB
Data Ram Size
32 KB
On-chip Adc
Yes
Operating Supply Voltage
3.13 V to 5.5 V
Operating Temperature Range
- 40 C to + 105 C
Package / Case
LQFP-112
Mounting Style
SMD/SMT
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DDRM
DDRM
DDRM
DDRM
DDRM
Field
4
3
2
1
0
Port M data direction—
This register controls the data direction of pin 4.
The enabled CAN2, routed CAN0, or routed CAN4 forces the I/O state to be an input. Depending on the configuration
of the enabled routed SPI0 this pin will be forced to be input or output.In those cases the data direction bits will not
change. The DDRM bits revert to controlling the I/O direction of a pin when the associated peripheral module is
disabled.
1 Associated pin is configured as output.
0 Associated pin is configured as input.
Port M data direction—
This register controls the data direction of pin 3.
The enabled CAN1 or routed CAN0 forces the I/O state to be an output. Depending on the configuration of the
enabled routed SPI0 this pin will be forced to be input or output. In those cases the data direction bits will not change.
The DDRM bits revert to controlling the I/O direction of a pin when the associated peripheral module is disabled.
1 Associated pin is configured as output.
0 Associated pin is configured as input.
Port M data direction—
This register controls the data direction of pin 2.
The enabled CAN1 or routed CAN0 forces the I/O state to be an input. Depending on the configuration of the enabled
routed SPI0 this pin will be forced to be input or output.In those cases the data direction bits will not change. The
DDRM bits revert to controlling the I/O direction of a pin when the associated peripheral module is disabled.
1 Associated pin is configured as output.
0 Associated pin is configured as input.
Port M data direction—
This register controls the data direction of pin 1.
The enabled CAN0 forces the I/O state to be an output. In those cases the data direction bits will not change. The
DDRM bits revert to controlling the I/O direction of a pin when the associated peripheral module is disabled.
1 Associated pin is configured as output.
0 Associated pin is configured as input.
Port M data direction—
This register controls the data direction of pin 0.
The enabled CAN0 forces the I/O state to be an input. In those cases the data direction bits will not change. The
DDRM bits revert to controlling the I/O direction of a pin when the associated peripheral module is disabled.
1 Associated pin is configured as output.
0 Associated pin is configured as input.
Due to internal synchronization circuits, it can take up to 2 bus clock cycles
until the correct value is read on PTM or PTIM registers, when changing the
DDRM register.
Table 2-35. DDRM Register Field Descriptions (continued)
MC9S12XE-Family Reference Manual Rev. 1.25
NOTE
Description
Chapter 2 Port Integration Module (S12XEPIMV1)
133
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