MC68HC908LB8CPE Freescale Semiconductor, MC68HC908LB8CPE Datasheet - Page 141
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 15
Pulse Width Modulator with Fault Input (PWM)
15.1 Introduction
This section describes the pulse-width modulator with fault input (PWM). The MC68HC908LB8 PWM
module can generate two independent PWM signals. These PWM signals are edge-aligned. A block
diagram of the PWM module is shown in
A 12-bit timer PWM counter is common to both channels. PWM resolution is one clock period for
edge-aligned operation. The clock period is dependent on the internal operating frequency (BUSCLK) and
a programmable prescaler.
The highest resolution for edge-aligned operation is 125 ns (BUSCLK = 8 MHz).
A summary of the PWM registers is shown in
15.2 Features
Features of the PWMMC include:
Freescale Semiconductor
•
•
•
•
Two independent PWM signals
Edge-aligned PWM signals
PWM signal polarity control
Programmable fault protection
MC68HC908LB8 Data Sheet, Rev. 1
Figure
Figure
15-2.
15-3.
141
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