MC68HC11K1CFN4 Freescale Semiconductor, MC68HC11K1CFN4 Datasheet - Page 78

• Manufacturer Part Number: MC68HC11K1CFN4
• Description: IC MCU 640 EEPROM 4MHZ 84-PLCC
• Manufacturer: Freescale Semiconductor
• Series: HC11r

Specifications of MC68HC11K1CFN4

• Core Processor: HC11
• Core Size: 8-Bit
• Speed: 4MHz
• Connectivity: SCI, SPI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 37
• Program Memory Type: ROMless
• Eeprom Size: 640 x 8
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 84-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Program Memory Size: -

PWPER1–PWPER4 —Pulse-Width Modulation Timer Period 1 to 4
PWPER1–PWPER4
PWDTY1–4 —Pulse-Width Modulation Timer Duty Cycle 1 to 4
PWDTY1–4
12.1 PWM Boundary Cases
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MOTOROLA
RESET:
RESET:
$006A
$006B
$006C
$006D
$006E
$006F
$0068
$0069
Determines period of associated PWM channel
Determines duty cycle of associated PWM channel
Certain values written to PWM control registers, counters, etc. can cause outputs that are not what the
user might expect. These are referred to as boundary cases. Boundary cases occur when the user
specifies a value that is either a maximum or a minimum. This value combined with other conditions
causes unexpected behavior of the PWM system.
The following conditions always cause the corresponding output to be high:
PWDTYx = $00, PWPERx > $00, and PPOLx = 0
PWDTYx PWPERx, and PPOLx = 1
PWPERx = $00 and PPOLx = 1
The following conditions always cause the corresponding output to be low:
PWDTYx = $00, PWPERx > $00, and PPOLx = 1
PWDTYx PWPERx, and PPOLx = 0
PWPERx = $00 and PPOLx = 0
Bit 7
Bit 7
Bit 7
Bit 7
Bit 7
Bit 7
Bit 7
Bit 7
Bit 7
1
1
6
6
6
6
1
6
6
6
6
6
1
Freescale Semiconductor, Inc.
For More Information On This Product,
5
5
5
5
1
5
5
5
5
5
1
Go to: www.freescale.com
4
4
4
4
1
4
4
4
4
4
1
3
3
3
3
1
3
3
3
3
3
1
2
2
2
2
1
2
2
2
2
2
1
1
1
1
1
1
1
1
1
1
1
1
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
1
1
$006C–$006F
$0068–$006B
PWPER1
PWPER2
PWPER3
PWPER4
PWDTY1
PWDTY2
PWDTY3
PWDTY4
M68HC11 K Series
MC68HC11TS/D