mc68hc08az60 Freescale Semiconductor, Inc, mc68hc08az60 Datasheet - Page 283

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

Port B
Port B Data
Register
5-ioports
MOTOROLA
Functions:
Address:
Alternate
Port B is an 8-bit special function port that shares all of its pins with the
analog-to-digital converter.
The port B data register contains a data latch for each of the eight port
B pins.
PTB[7:0] — Port B Data Bits
X = don’t care
Hi-Z = high impedance
1. Writing affects data register, but does not affect input.
Reset:
Read:
Write:
Freescale Semiconductor, Inc.
DDRA
These read/write bits are software programmable. Data direction of
each port B pin is under the control of the corresponding bit in data
direction register B. Reset has no effect on port B data.
Bit
For More Information On This Product,
0
1
$0001
PTB7
ATD7
Bit 7
Go to: www.freescale.com
PTA
Bit
Figure 5. Port B Data Register (PTB)
X
X
PTB6
ATD6
6
Table 1. Port A Pin Functions
I/O Ports
Input, Hi-Z
PTB5
ATD5
I/O Pin
Output
Mode
5
Unaffected by Reset
PTB4
ATD4
4
Read/Write
DDRA[7:0]
DDRA[7:0]
Accesses
to DDRA
PTB3
ATD3
3
MC68HC08AZ60 — Rev 1.0
PTB2
ATD2
PTA[7:0]
2
Read
Accesses to PTA
Pin
PTB1
ATD1
1
PTA[7:0]
PTA[7:0]
Write
I/O Ports
PTB0
ATD0
Bit 0
Port B
(1)
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