mc68hc916y3 Freescale Semiconductor, Inc, mc68hc916y3 Datasheet - Page 181

• Manufacturer Part Number: mc68hc916y3
• Description: Mc68hc16y3 16 Bit Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

MC68HC16Y3/916Y3
USER’S MANUAL
Port F pin assignment register (PFPAR) fields determine the functions of pairs of port
F pins. Table 5-29 shows port F pin assignments. Table 5-30 shows PFPAR pin
functions.
In single-chip mode (BERR = 0 during reset), this register is set to $00, defining all port
F pins to be I/O pins. In 8- and 16-bit expanded modes, the state of DATA9 during
reset determines the default value for PFPAR.
FASTREF/PF0
IRQ7/PF7
IRQ6/PF6
IRQ5/PF5
IRQ4/PF4
IRQ3/PF3
IRQ2/PF2
IRQ1/PF1
PFPAR Field
Freescale Semiconductor, Inc.
PFPA3
PFPA2
PFPA1
PFPA0
For More Information On This Product,
Table 5-29 Port F Pin Assignments
Figure 5-23 Port F Block Diagram
7
8
PFPAR
EDGE-DETECT LOGIC
PORTFE FLAGS
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8
Port F Signal
PF[7:6]
PF[5:4]
PF[3:2]
PF[1:0]
PORTF LEVEL (3)
PORT F DATA
PORTF DDR
Alternate Signal
IRQ1, FASTREF
8
PORTF VECTOR (8)
IRQ[7:1]
IRQ[5:4]
IRQ[3:2]
8
BIU
PORT F BLOCK
MOTOROLA
5-73