S912XET512J3VALR Freescale Semiconductor, S912XET512J3VALR Datasheet - Page 112

• Manufacturer Part Number: S912XET512J3VALR
• Description: 16-bit Microcontrollers - MCU 16 BIT,512K FLASH
• Manufacturer: Freescale Semiconductor

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

1. Read: Anytime. In emulation modes, read operations will return the data from the external bus, in all other modes the data source
Chapter 2 Port Integration Module (S12XEPIMV1)
2.3.10
112
Address 0x0007 (PRR)
is depending on the data direction value.
Write: Anytime. In emulation modes, write operations will also be directed to the external bus.
DDRC
DDRD
Field
Field
Reset
7-0
7-0
W
R
Port C Data Direction—
This register controls the data direction of pins 7 through 0.
The external bus function controls the data direction for the associated pins. In this case the data direction bits will
not change.
When operating a pin as a general purpose I/O, the associated data direction bit determines whether it is an input
or output.
1 Associated pin is configured as output.
0 Associated pin is configured as high-impedance input.
Port D Data Direction—
This register controls the data direction of pins 7 through 0.
When used with the external bus this function controls the data direction for the associated pins. In this case the data
direction bits will not change.
When operating a pin as a general purpose I/O, the associated data direction bit determines whether it is an input
or output.
1 Associated pin is configured as output.
0 Associated pin is configured as high-impedance input.
DDRD7
Port D Data Direction Register (DDRD)
0
7
DDRD6
0
6
Figure 2-8. Port D Data Direction Register (DDRD)
Table 2-10. DDRC Register Field Descriptions
Table 2-11. DDRD Register Field Descriptions
MC9S12XE-Family Reference Manual Rev. 1.25
DDRD5
0
5
DDRD4
0
4
Description
Description
DDRD3
3
0
DDRD2
0
2
Access: User read/write
Freescale Semiconductor
DDRD1
0
1
DDRD0
0
0
(1)