MC68HC912B32CFU8 Freescale Semiconductor, MC68HC912B32CFU8 Datasheet - Page 126

• Manufacturer Part Number: MC68HC912B32CFU8
• Description: IC MCU 32K FLASH 8MHZ 80-QFP
• Manufacturer: Freescale Semiconductor
• Series: HC12r

Specifications of MC68HC912B32CFU8

• Core Processor: CPU12
• Core Size: 16-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 63
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 768 x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Pulse-Width Modulator (PWM)
126
CLOCK SOURCE
CLOCK EDGE SYNC
PWENx
PWENx
CLOCK SOURCE
CLOCK EDGE SYNC
PPOL = 0
PPOL = 1
(ECLK)
(ECLK)
GATE
Figure 11-2. Block Diagram of PWM Center-Aligned Output Channel
GATE
Figure 11-1. Block Diagram of PWM Left-Aligned Output Channel
PPOL = 0
PPOL = 1
PWDTY
RESET
M68HC12B Family Data Sheet, Rev. 9.1
PWCNTx
PWCNTx
PWDTY
UP COUNTER ONLY
RESET
8-BIT COMPARE =
(PWPER − PWDTY)
8-BIT COMPARE
8-BIT COMPARE =
DUTY CYCLE
CENTR = 0
8-BIT COMPARE
CENTR = 1
PWDTYx
PWPERx
PERIOD
PWDTYx
PWPERx
PWPER
PWPER
×
2
×
2
S
T
R
Q
Q
Q
Q
PPOLx
PPOLx
MUX
DATA REGISTER
MUX
FROM PORT P
DATA REGISTER
FROM PORT P
Freescale Semiconductor
PWDTY
MUX
MUX
DRIVER
TO PIN
DRIVER
TO PIN