MC68HC908GZ8VFA Freescale Semiconductor, MC68HC908GZ8VFA Datasheet - Page 155
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MC68HC908GZ8VFA
Manufacturer Part Number
MC68HC908GZ8VFA
Description
IC MCU 8K FLASH 8MHZ CAN 48-LQFP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC68908GZ8CFJER.pdf
(314 pages)
Specifications of MC68HC908GZ8VFA
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
CAN, LIN, SCI, SPI
Peripherals
LVD, POR, PWM
Number Of I /o
37
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 105°C
Package / Case
48-LQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC68HC908GZ8VFA
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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Chapter 13
Input/Output (I/O) Ports
13.1 Introduction
Bidirectional input-output (I/O) pins form five parallel ports. All I/O pins are programmable as inputs or
outputs. All individual bits within port A, port C, and port D are software configurable with pullup devices
if configured as input port bits. The pullup devices are automatically and dynamically disabled when a port
bit is switched to output mode.
13.2 Unused Pin Termination
Input pins and I/O port pins that are not used in the application must be terminated. This prevents excess
current caused by floating inputs, and enhances immunity during noise or transient events. Termination
methods include:
Never connect unused pins directly to V
Since some general-purpose I/O pins are not available on all packages, these pins must be terminated
as well. Either method 1 or 2 above are appropriate.
Freescale Semiconductor
Addr.
$0000
$0001
$0002
$0003
1. Configuring unused pins as outputs and driving high or low;
1. Configuring unused pins as inputs and enabling internal pull-ups;
1. Configuring unused pins as inputs and using external pull-up or pull-down resistors.
Register Name
Port A Data Register
Port B Data Register
Port C Data Register
Port D Data Register
See page 158.
See page 160.
See page 162.
See page 164.
(PTC)
(PTD)
(PTA)
(PTB)
Reset:
Reset:
Reset:
Reset:
MC68HC908GZ16 • MC68HC908GZ8 Data Sheet, Rev. 4
Read:
Read:
Read:
Read:
Write:
Write:
Write:
Write:
Figure 13-1. I/O Port Register Summary
PTD7
PTA7
PTB7
Bit 7
1
DD
= Unimplemented
or V
PTC6
PTD6
PTA6
PTB6
6
SS
.
PTC5
PTD5
PTA5
PTB5
5
Unaffected by reset
Unaffected by reset
Unaffected by reset
Unaffected by reset
PTA4
PTB4
PTC4
PTD4
4
PTA3
PTB3
PTC3
PTD3
3
PTA2
PTB2
PTC2
PTD2
2
PTA1
PTB1
PTC1
PTD1
1
PTA0
PTB0
PTC0
PTD0
Bit 0
155
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