MC9S12XDT512CAA Freescale, MC9S12XDT512CAA Datasheet - Page 925

• Manufacturer Part Number: MC9S12XDT512CAA
• Manufacturer: Freescale

Specifications of MC9S12XDT512CAA

• Cpu Family: HCS12
• Device Core Size: 16b
• Frequency (max): 40MHz
• Interface Type: CAN/I2C/SCI/SPI
• Total Internal Ram Size: 32KB
• # I/os (max): 59
• Number Of Timers - General Purpose: 12
• Operating Supply Voltage (typ): 2.5/5V
• Operating Supply Voltage (max): 2.75/5.5V
• Operating Supply Voltage (min): 2.35/3.15V
• On-chip Adc: 8-chx10-bit
• Instruction Set Architecture: CISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 80
• Package Type: PQFP
• Program Memory Type: Flash
• Program Memory Size: 512KB
• Lead Free Status / RoHS Status: Compliant

Reset
RDPK
RDPE
RDPD
RDPC
RDPB
RDPA
23.0.5.12 S12X_EBI Ports Reduced Drive Register (RDRIV)
Read: Anytime. In emulation modes, read operations will return the data from the external bus, in
all other modes the data source is depending on the data direction value.
Write: Anytime. In emulation modes, write operations will also be directed to the external bus.
This register is used to select reduced drive for the pins associated with ports A, B, E, and K. If
enabled, the pins drive at about 1/6 of the full drive strength. The reduced drive function is
independent of which function is being used on a particular pin.
The reduced drive functionality does not take effect on the pins in emulation modes.
Field
7
4
3
2
1
0
W
R
RDPK
Reduced Drive of Port K
0 All port K output pins have full drive enabled.
1 All port K output pins have reduced drive enabled.
Reduced Drive of Port E
0 All port E output pins have full drive enabled.
1 All port E output pins have reduced drive enabled.
Reduced Drive of Port D
0 All port D output pins have full drive enabled.
1 All port D output pins have reduced drive enabled.
Reduced Drive of Port C
0 All port C output pins have full drive enabled.
1 All port C output pins have reduced drive enabled.
Reduced Drive of Port B
0 All port B output pins have full drive enabled.
1 All port B output pins have reduced drive enabled.
Reduced Drive of Ports A
0 All Port A output pins have full drive enabled.
1 All port A output pins have reduced drive enabled.
7
0
= Unimplemented or Reserved
Figure 23-14. S12X_EBI Ports Reduced Drive Register (RDRIV)
0
0
6
Table 23-15. RDRIV Field Descriptions
5
0
0
RDPE
0
4
Description
RDPD
3
0
RDPC
0
2
RDPB
1
0
RDPA
0
0