MC9S08JM16CGTE FREESCALE [Freescale Semiconductor, Inc], MC9S08JM16CGTE Datasheet - Page 92

• Manufacturer Part Number: MC9S08JM16CGTE
• Description: Microcontrollers
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Chapter 6 Parallel Input/Output
6.5.11
Port F parallel I/O function is controlled by the registers listed below.
92
PTEDS[7:0]
[6:4, 1:0]
Reset
Reset
6:4, 1:0
PTFD
Field
Field
7:0
W
W
R
R
PTEDS7
Port F I/O Registers (PTFD and PTFDD)
Output Drive Strength Selection for Port E Bits — Each of these control bits selects between low and high
output drive for the associated PTE pin.
0 Low output drive enabled for port E bit n.
1 High output drive enabled for port E bit n.
Port F Data Register Bits— For port F pins that are inputs, reads return the logic level on the pin. For port F
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 F pins that are configured as outputs, the logic level is
driven out the corresponding MCU pin.
Reset forces PTFD 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.
0
0
7
7
Figure 6-26. Output Drive Strength Selection for Port E (PTEDS)
PTEDS6
PTFD6
0
0
6
6
Table 6-25. PTEDS Register Field Descriptions
Table 6-26. PTFD Register Field Descriptions
Figure 6-27. Port F Data Register (PTFD)
PTEDS5
MC9S08JM16 Series Data Sheet, Rev. 2
PTFD5
0
0
5
5
PTEDS4
PTFD4
0
0
4
4
Description
Description
PTEDS3
3
0
3
0
PTEDS2
0
0
2
2
PTEDS1
Freescale Semiconductor
PTFD1
0
0
1
1
PTEDS0
PTFD0
0
0
0
0