MC68HC908LB8CPE Freescale Semiconductor, MC68HC908LB8CPE Datasheet - Page 46

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MC68HC908LB8CPE

Manufacturer Part Number
MC68HC908LB8CPE
Description
IC MCU 8K FLASH 8MHZ 20DIP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet

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
Part Number:
MC68HC908LB8CPE
Manufacturer:
IR
Quantity:
10
Analog-to-Digital Converter (ADC)
3.2 Features
Features of the ADC module include:
3.3 Functional Description
Seven ADC channels are available for sampling external sources at pins PTB7/ADC6, PTA6/ADC5,
PTA4/ADC4–PTA0/ADC0. An analog multiplexer allows a single ADC converter to select one of seven
ADC channels as ADC voltage in (ADCVIN). ADCVIN is converted by the successive approximation
register based counters. When the conversion is complete, ADC places the result in the ADC data register
and sets a flag or generates an interrupt.
See
3.3.1 ADC Port I/O Pins
PTB7/ADC6, PTA6/ADC5, PTA4/ADC4–PTA0/ADC0 are general-purpose I/O (input/output) pins that
share with the ADC channels. The channel select bits define which ADC channel/port pin will be used as
46
Figure
7 channels with multiplexed input
Linear successive approximation
8-bit resolution
Single or continuous conversion
Conversion complete flag or conversion complete interrupt
Selectable ADC clock
3-2.
INTERNAL DATA BUS
AIEN
INTERRUPT
LOGIC
COCO
READ DDRAx/DDRBx
WRITE DDRAx/DDRBx
WRITE PTAx/PTBx
READ PTAx/PTBx
CONVERSION
BUS CLOCK
COMPLETE
RESET
Figure 3-2. ADC Block Diagram
MC68HC908LB8 Data Sheet, Rev. 1
ADC DATA REGISTER
DDRAx/DDRAx
PTAx/PTBx
GENERATOR
ADIV[2:0]
CLOCK
ADC
ADC CLOCK
VOLTAGE IN
(V
ADC
ADIN
DISABLE
)
DISABLE
CHANNEL
SELECT
ADC CHANNEL x
PTAx/PTBx
ADCH[4:0]
Freescale Semiconductor

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