MC68HC908MR16CFU Freescale Semiconductor, MC68HC908MR16CFU Datasheet - Page 145

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MC68HC908MR16CFU

Manufacturer Part Number
MC68HC908MR16CFU
Description
IC MCU 8MHZ 16K FLASH 64-QFP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet

Specifications of MC68HC908MR16CFU

Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
SCI, SPI
Peripherals
LVD, POR, PWM
Number Of I /o
44
Program Memory Size
16KB (16K x 8)
Program Memory Type
FLASH
Ram Size
768 x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 10x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-QFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-

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12.9.3 PWMx Value Registers
Each of the six PWMs has a 16-bit PWM value register.
The 16-bit signed value stored in this register determines the duty cycle of the PWM. The duty cycle is
defined as: (PWM value/modulus) x 100.
Writing a number less than or equal to 0 causes the PWM to be off for the entire PWM period. Writing a
number greater than or equal to the 12-bit modulus causes the PWM to be on for the entire PWM period.
If the complementary mode is selected, the PWM pairs share PWM value registers.
To avoid erroneous PWM pulses, this value is buffered and will not be used by the PWM generator until
the LDOK bit has been set and the next PWM load cycle begins.
Freescale Semiconductor
Reset:
Reset:
When reading these registers, the value read is the buffer (not necessarily
the value the PWM generator is currently using).
Read:
Read:
Write:
Write:
Bit 15
Bit 7
Bit 7
Bold
Bit 7
Bold
Figure 12-37. PWMx Value Registers High (PVALxH)
Figure 12-38. PWMx Value Registers Low (PVALxL)
0
0
MC68HC908MR32 • MC68HC908MR16 Data Sheet, Rev. 6.1
= Buffered
= Buffered
Bit 14
Bit 6
6
0
6
0
Bit 13
Bit 5
5
0
5
0
Bit 12
NOTE
Bit 4
4
0
4
0
Bit 11
Bit 3
3
0
3
0
Bit 10
Bit 2
2
0
2
0
Bit 9
Bit 1
1
0
1
0
Bit 8
Bit 0
Bit 0
Bit 0
Control Logic Block
0
0
145

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