mc68hc08az60 Freescale Semiconductor, Inc, mc68hc08az60 Datasheet - Page 285

• Manufacturer Part Number: mc68hc08az60
• Description: M68hc08 Family Of 8-bit Microcontroller Units Mcus
• Manufacturer: Freescale Semiconductor, Inc

7-ioports
MOTOROLA
When bit DDRBx is a logic 1, reading address $0001 reads the PTBx
data latch. When bit DDRBx is a logic 0, reading address $0001 reads
the voltage level on the pin. The data latch can always be written,
regardless of the state of its data direction bit.
operation of the port B pins.
X = don’t care
Hi-Z = high impedance
1. Writing affects data register, but does not affect input.
Freescale Semiconductor, Inc.
DDRB
Bit
For More Information On This Product,
0
1
READ DDRB ($0005)
WRITE DDRB ($0005)
WRITE PTB ($0001)
READ PTB ($0001)
Go to: www.freescale.com
PTB
Bit
X
X
Table 2. Port B Pin Functions
I/O Ports
RESET
Figure 7. Port B I/O Circuit
Input, Hi-Z
I/O Pin
Output
Mode
DDRBx
PTBx
Read/Write
DDRB[7:0]
DDRB[7:0]
Accesses
to DDRB
Table 2
MC68HC08AZ60 — Rev 1.0
PTB[7:0]
Read
Accesses to PTB
Pin
summarizes the
PTB[7:0]
PTB[7:0]
Write
I/O Ports
Port B
PTBx
(1)
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