MC68HC908MR16CFU Freescale Semiconductor, MC68HC908MR16CFU Datasheet - Page 143

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

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: -

12.8 PWM Operation in Wait Mode
When the microcontroller is put in low-power wait mode via the WAIT instruction, all clocks to the PWM
module will continue to run. If an interrupt is issued from the PWM module (via a reload or a fault), the
microcontroller will exit wait mode.
Clearing the PWMEN bit before entering wait mode will reduce power consumption in wait mode because
the counter, prescaler divider, and LDFQ divider will no longer be clocked. In addition, power will be
reduced because the PWMs will no longer toggle.
12.9 Control Logic Block
This subsection provides a description of the control logic block.
12.9.1 PWM Counter Registers
The PWM counter registers (PCNTH and PCNTL) display the 12-bit up/down or up-only counter. When
the high byte of the counter is read, the lower byte is latched. PCNTL will hold this latched value until it is
read. See
Freescale Semiconductor
Figure 12-33
Address:
Address:
Reset:
Reset:
Read:
Read:
Write:
Write:
$0026
$0027
Bit 7
Bit 7
Bit 7
Figure 12-33. PWM Counter Register High (PCNTH)
0
0
0
and
Figure 12-34. PWM Counter Register Low (PCNTL)
MC68HC908MR32 • MC68HC908MR16 Data Sheet, Rev. 6.1
Figure
= Unimplemented
= Unimplemented
Bit 6
6
0
0
6
0
12-34.
Bit 5
5
0
0
5
0
Bit 4
4
0
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
PWM Operation in Wait Mode
Bit 0
Bit 8
Bit 0
Bit 0
0
0
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