MC68HC908LB8CPE Freescale Semiconductor, MC68HC908LB8CPE Datasheet - Page 133
MC68HC908LB8CPE
Manufacturer Part Number
MC68HC908LB8CPE
Description
IC MCU 8K FLASH 8MHZ 20DIP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC68HC908LB8CDWE.pdf
(234 pages)
Specifications of MC68HC908LB8CPE
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Peripherals
LVR, POR, PWM
Number Of I /o
18
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Ram Size
128 x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 7x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
20-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Connectivity
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC68HC908LB8CPE
Manufacturer:
IR
Quantity:
10
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Chapter 14
Input/Output (I/O) Ports
14.1 Introduction
Bidirectional input-output (I/O) pins form three parallel ports. All I/O pins are programmable as inputs or
outputs. All individual bits within port A and port C 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.
Freescale Semiconductor
Addr.
$0000
$0001
$0002
$0004
$0005
$0006
Data Direction Register C
Data Direction Register A
Data Direction Register B
Register Name
Port C Data Register
Port A Data Register
Port B Data Register
Connect any unused I/O pins to an appropriate logic level, either V
V
termination reduces excess current consumption and the possibility of
electrostatic damage.
SS
See page 134.
See page 136.
See page 138.
See page 135.
See page 137.
See page 139.
. Although the I/O ports do not require termination for proper operation,
(DDRA)
(DDRB)
(DDRC)
(PTA)
(PTB)
(PTC)
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
Read:
Read:
Read:
Read:
Read:
Read:
Write:
Write:
Write:
Write:
Write:
Write:
Figure 14-1. I/O Port Register Summary
DDRB7
PTB7
Bit 7
0
0
0
0
0
0
0
0
MC68HC908LB8 Data Sheet, Rev. 1
= Unimplemented
DDRA6
DDRB6
PTA6
PTB6
6
0
0
0
0
0
0
NOTE
DDRA5
DDRB5
PTA5
PTB5
5
0
0
0
0
0
0
DDRA4
DDRB4
Unaffected by reset
Unaffected by reset
PTA4
PTB4
4
0
0
0
0
0
0
DDRA3
DDRB3
PTA3
PTB3
3
0
0
0
0
0
0
DDRA2
DDRB2
PTC2
PTA2
PTB2
2
0
0
0
0
0
DD
or
DDRA1
DDRB1
DDRC1
PTC1
PTA1
PTB1
1
0
0
0
0
DDRA0
DDRB0
DDRC0
PTC0
PTA0
PTB0
Bit 0
0
0
0
0
133
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