MC908MR8MPE Freescale Semiconductor, MC908MR8MPE Datasheet - Page 146
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MC908MR8MPE
Manufacturer Part Number
MC908MR8MPE
Description
IC MCU 8BIT 8K FLASH 28-PDIP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MCHC908MR8VFAE.pdf
(372 pages)
Specifications of MC908MR8MPE
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
SCI
Peripherals
LVD, POR, PWM
Number Of I /o
12
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 4x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
28-DIP (0.600", 15.24mm)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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Pulse-Width Modulator for Motor Control
9.4 Timebase
9.4.1 Resolution
Technical Data
146
This subsection provides for a discussion of the timebase.
In center-aligned mode, a 12-bit up/down counter is used to create the
PWM period. Therefore, the PWM resolution in center-aligned mode is
two clocks (highest resolution is 250 ns @ f
Figure
register to determine its maximum count. The PWM period will equal:
For edge-aligned mode, a 12-bit up-only counter is used to create the
PWM period. Therefore, the PWM resolution in edge-aligned mode is
one clock (highest resolution is 125 ns @ f
Figure
maximum count. The PWM period will equal:
Center-aligned operation versus edge-aligned operation is determined
by the option EDGE. See
Pulse-Width Modulator for Motor Control (PWMMC)
9-3. The up/down counter uses the value in the timer modulus
9-4. Again, the timer modulus register is used to determine the
(timer modulus) x (PWM clock period) x 2
(timer modulus) x (PWM clock period)
5.4 CONFIG
Bits.
OP
OP
= 8 MHz) as shown in
= 8 MHz) as shown in
MC68HC908MR8 — Rev 4.1
Freescale Semiconductor
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