MC68HC908BD48IFB Freescale Semiconductor, MC68HC908BD48IFB Datasheet - Page 150
MC68HC908BD48IFB
Manufacturer Part Number
MC68HC908BD48IFB
Description
IC MCU 48K FLASH 6MHZ USB 44PQFP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC908BD48IBE.pdf
(288 pages)
Specifications of MC68HC908BD48IFB
Core Processor
HC08
Core Size
8-Bit
Speed
6MHz
Connectivity
I²C, USB
Peripherals
POR, PWM
Number Of I /o
32
Program Memory Size
48KB (48K x 8)
Program Memory Type
FLASH
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 6x8b
Oscillator Type
Internal
Operating Temperature
0°C ~ 85°C
Package / Case
44-QFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC68HC908BD48IFB
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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Pulse Width Modulator (PWM)
11.4.1 PWM Data Registers 0 to 15 (0PWM–15PWM)
Data Sheet
150
Address:
The output waveform of the 16 PWM channels are each configured by
an 8-bit register, which contains a 5-bit PWM in MSB portion and a 3-bit
binary rate multiplier (BRM) in LSB portion
xPWM4–xPWM0 — PWM Bits
The value programmed in the 5-bit PWM portion will determine the pulse
length of the output. The clock to the 5-bit PWM portion is the system
clock (CPU clock), the repetition rate of the output is hence f
Examples of PWM output waveforms are shown in
xBRM2–xBRM0 — Binary Rate Multiplier Bits
The 3-bit BRM will generate a number of narrow pulses which are
equally distributed among an 8-PWM-cycle frame. The number of pulses
generated is equal to the number programmed in the 3-bit BRM portion.
Examples of PWM output waveforms are shown in
Reset:
Read:
Write:
Figure 11-1. PWM Data Registers 0 to 15 (0PWM–15PWM)
xPWM4
Bit 7
0
Pulse Width Modulator (PWM)
$0020–$0027 and $0051–$0058
xPWM3
6
0
xPWM2
5
0
xPWM1
4
0
xPWM0
3
0
MC68HC908BD48
xBRM2
Freescale Semiconductor
2
0
Figure
Figure
xBRM1
1
0
11-3.
11-3.
OP
—
÷ 32.
Rev. 2.1
xBRM0
Bit 0
0
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