MC68HC908JL8 MOTOROLA [Motorola, Inc], MC68HC908JL8 Datasheet - Page 224

• Manufacturer Part Number: MC68HC908JL8
• Description: Motorola reserves the right to make changes without further notice to any products herein
• Manufacturer: MOTOROLA [Motorola, Inc]

Input/Output (I/O) Ports
13.4 Port B
13.4.1 Port B Data Register (PTB)
Technical Data
224
Alternative Functions:
Address:
Port B is an 8-bit special function port that shares all of its port pins with
the analog-to-digital converter (ADC) module, see
The port B data register contains a data latch for each of the eight port B
pins.
PTB[7:0] — Port B Data Bits
ADC7–ADC0 — ADC channels 7 to 0
Reset:
Read:
Write:
Freescale Semiconductor, Inc.
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.
ADC7–ADC0 are pins used for the input channels to the analog-to-
digital converter module. The channel select bits, ADCH[4:0], in the
ADC status and control register define which port pin will be used as
an ADC input and overrides any control from the port I/O logic. See
Section 12. Analog-to-Digital Converter
For More Information On This Product,
$0001
PTB7
ADC7
Bit 7
Figure 13-7. Port B Data Register (PTB)
Go to: www.freescale.com
Input/Output (I/O) Ports
PTB6
ADC6
6
ADC5
PTB5
5
Unaffected by reset
ADC4
PTB4
4
ADC3
PTB3
3
(ADC).
MC68HC908JL8
ADC2
PTB2
Section 12.
2
ADC2
PTB1
1
MOTOROLA
—
Rev. 2.0
PTB0
ADC0
Bit 0