mc9s08gt32a Freescale Semiconductor, Inc, mc9s08gt32a Datasheet - Page 99

• Manufacturer Part Number: mc9s08gt32a
• Description: Hcs08 Microcontrollers 8-bit Microcontroller Family
• Manufacturer: Freescale Semiconductor, Inc

Freescale Semiconductor
PTGPE[7:0]
PTGD[7:0]
Reset
Reset
Field
Field
7:0
7:0
W
W
R
R
PTGPE7
PTGD7
Port PTG Data Register Bits — For port G pins that are inputs, reads return the logic level on the pin. For port
G pins that are configured as outputs, reads return the last value written to this register.
Writes are latched into all bits of this register. For port G pins that are configured as outputs, the logic level is
driven out the corresponding MCU pin.
Reset forces PTGD to all 0s, but these 0s are not driven out the corresponding pins because reset also
configures all port pins as high-impedance inputs with pullups disabled.
Pullup Enable for Port G Bits — For port G pins that are inputs, these read/write control bits determine whether
internal pullup devices are enabled. For port G pins that are configured as outputs, these bits are ignored and
the internal pullup devices are disabled.
0 Internal pullup device disabled.
1 Internal pullup device enabled.
0
0
7
7
PTGPE6
PTGD6
0
0
6
6
Figure 6-34. Pullup Enable for Port G (PTGPE)
Figure 6-33. Port PTG Data Register (PTGD)
Table 6-26. PTGPE Field Descriptions
Table 6-25. PTGD Field Descriptions
PTGPE5
PTGD5
MC9S08GB60A Data Sheet, Rev. 1.02
0
0
5
5
PTGPE4
PTGD4
0
0
4
4
Description
Description
PTGPE3
PTGD3
3
0
3
0
PTGPE2
PTGD2
0
0
2
2
Chapter 6 Parallel Input/Output
PTGPE1
PTGD1
0
0
1
1
PTGPE0
PTGD0
0
0
0
0
99