MC68HC908AZ32ACFU MOTOROLA [Motorola, Inc], MC68HC908AZ32ACFU Datasheet - Page 370
![no-image](/images/no-image-200.jpg)
MC68HC908AZ32ACFU
Manufacturer Part Number
MC68HC908AZ32ACFU
Description
Microcontrollers
Manufacturer
MOTOROLA [Motorola, Inc]
Datasheet
1.MC68HC908AZ32ACFU.pdf
(468 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
- Current page: 370 of 468
- Download datasheet (4Mb)
I/O Ports
23.4.2 Data Direction Register B
Advance Information
370
NOTE:
Address:
ATD[7:0] — ADC Channels
Data direction register B determines whether each port B pin is an input
or an output. Writing a logic 1 to a DDRB bit enables the output buffer for
the corresponding port B pin; a logic 0 disables the output buffer.
DDRB[7:0] — Data Direction Register B Bits
Avoid glitches on port B pins by writing to the port B data register before
changing data direction register B bits from 0 to 1.
Figure 23-7
Reset:
Read:
Write:
Freescale Semiconductor, Inc.
PTB7–PTB0 are eight of the analog-to-digital converter channels.
The ADC channel select bits, CH[4:0], determine whether the
PTB7–PTB0 pins are ADC channels or general-purpose I/O pins. If
an ADC channel is selected and a read of this corresponding bit in the
port B data register occurs, the data will be 0 if the data direction for
this bit is programmed as an input. Otherwise, the data will reflect the
value in the data latch. (See
Converter
affect the data direction of port B pins that are being used by the ADC.
However, the DDRB bits always determine whether reading port B
returns to the states of the latches or logic 0.
These read/write bits control port B data direction. Reset clears
DDRB[7:0], configuring all port B pins as inputs.
For More Information On This Product,
1 = Corresponding port B pin configured as output
0 = Corresponding port B pin configured as input
DDRB7
$0005
Bit 7
0
Figure 23-6. Data Direction Register B (DDRB)
shows the port B I/O logic.
Go to: www.freescale.com
(ADC-15)). Data direction register B (DDRB) does not
DDRB6
6
0
I/O Ports
DDRB5
5
0
Section 21. Analog-To-Digital
DDRB4
4
0
DDRB3
3
0
68HC908AZ32A — Rev 0.0
DDRB2
2
0
DDRB1
1
0
MOTOROLA
DDRB0
Bit 0
0
Related parts for MC68HC908AZ32ACFU
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![MC1723L](/images/manufacturer_photos/0/4/459/motorola_tmb.jpg)
Part Number:
Description:
Motorola, Inc [VOLTAGE REGULATOR]
Manufacturer:
Motorola
Datasheet:
![MPQ1000](/images/no-image3.png)
Part Number:
Description:
6367254 MOTOROLA SC (XSTRS/R F)
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
![MC1494L](/images/manufacturer_photos/0/4/459/motorola_tmb.jpg)
Part Number:
Description:
MC1494LMotorola, Inc [MONOLITHIC FOUR-QUADRANT MULTIPLIER]
Manufacturer:
Motorola
Datasheet:
![MC1466L](/images/manufacturer_photos/0/4/459/motorola_tmb.jpg)
Part Number:
Description:
MC1466LMotorola, Inc [PRECISION WIDE RANGE VOLTAGE AND CURRENT REGULATOR]
Manufacturer:
Motorola
Datasheet:
![MC145532DW](/images/manufacturer_photos/0/4/459/motorola_tmb.jpg)
Part Number:
Description:
MC145532DWMotorola, Inc [ADPCM Transcoder]
Manufacturer:
Motorola
Datasheet:
![MCR704](/images/no-image3.png)
Part Number:
Description:
Silicon Controlled Rectifiers
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
![MRF21010](/images/no-image3.png)
Part Number:
Description:
RF Power Field Effect Transistors N-Channel Enhancement-Mode Lateral MOSFETs
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
![MRF21125S](/images/no-image3.png)
Part Number:
Description:
RF POWER FIELD EFFECT TRANSISTORS
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
![MRF282S](/images/no-image3.png)
Part Number:
Description:
LATERAL N-CHANNEL BROADBAND RF POWER MOSFETs
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
![MRF5P20180](/images/no-image3.png)
Part Number:
Description:
RF POWER FIELD EFFECT TRANSISTOR
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
![MRF8372R1](/images/no-image3.png)
Part Number:
Description:
RF LOW POWER TRANSISTOR NPN SILICON
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
![1SMA5921BT3](/images/no-image3.png)
Part Number:
Description:
PLASTIC SURFACE MOUNT ZENER DIODES 1.5 WATTS 3.3-68 VOLTS
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
![MR2835S](/images/no-image3.png)
Part Number:
Description:
OVERVOLTAGE TRANSIENT SUPPRESSOR
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
![MTD15N06](/images/no-image3.png)
Part Number:
Description:
TMOS POWER FET 15 AMPERES 60 VOLTS
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
![MTD20P03](/images/no-image3.png)
Part Number:
Description:
TMOS POWER FET LOGIC LEVEL 19 AMPERES 30 VOLTS RDS(on) = 0.099 OHM
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet: