MC68F375BGMZP33 Freescale Semiconductor, MC68F375BGMZP33 Datasheet - Page 474

• Manufacturer Part Number: MC68F375BGMZP33
• Description: IC MPU 32BIT 33MHZ 217-PBGA
• Manufacturer: Freescale Semiconductor

Specifications of MC68F375BGMZP33

• Processor Type: M683xx 32-Bit
• Speed: 33MHz
• Voltage: 5V
• Mounting Type: Surface Mount
• Package / Case: 217-PBGA
• Processor Series: M683xx
• Core: CPU32
• Data Bus Width: 32 bit
• Program Memory Type: Flash
• Program Memory Size: 256 KB
• Data Ram Size: 10 KB
• Interface Type: SPI, SCI, CAN
• Maximum Clock Frequency: 16 MHz
• Number Of Programmable I/os: 48
• Number Of Timers: 16
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 16 Channel
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Features: -
• Lead Free Status / Rohs Status: No

13.7.13.2 PWMA — PWM Period Register
MC68F375
REFERENCE MANUAL
POL
CLK2
The PWMA register contains the period value for the next cycle of the PWM output
waveform. In normal usage, with the PWMSM enabled, the software writes a period
value into PWMA1 and this value is then loaded into the PWMA2 register at the end
of the current period. If the PWMSM is disabled, a period value written to PWMA1 is
loaded into PWMA2 on the next tic (of the MCU system clock). PWMA2 is a temporary
register that is used for smoothly updating the PWM period value; it cannot be read or
written directly by software.
Software may write a new period value into PWMA1 at any time and this new value
will take effect at the start of the next PWM period (or when the LOAD bit in the PWM-
SIC register is written to a ‘1’). The PWMSM hardware does not modify the contents
of PWMA1 at any time.
Control Bits
0
1
0
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
PWMSM CLK Bits
EN
0
0
1
1
CLK1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
Table 13-16 PWMSM Output Pin Polarity Selection
Output Pin State
Table 13-17 PWMSM Clock Rate Selection
Always high
Always low
High pulse
Low pulse
Freescale Semiconductor, Inc.
CLK0
For More Information On This Product,
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
CONFIGURABLE TIMER MODULE (CTM9)
CPSM Bit DIV23
Go to: www.freescale.com
Rev. 25 June 03
Periodic Edge
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
Falling edge
Rising edge
—
—
PWMSM Clock
f
f
f
f
f
f
f
SYS
SYS
f
f
f
f
SYS
SYS
f
f
f
SYS
SYS
SYS
f
f
SYS
SYS
SYS
SYS
SYS
SYS
SYS
SYS
SYS
Variable Edge
Falling edge
/ 128
/ 512
/ 192
/ 768
Rising edge
/ 16
/ 32
/ 64
/ 12
/ 24
/ 48
/ 96
/ 2
/ 4
/ 8
/ 3
/ 6
—
—
Prescaler (/256)
Prescaler (/256)
Optional Interrupt
Prescaler (/16)
Prescaler (/32)
Prescaler (/64)
Prescaler (/16)
Prescaler (/32)
Prescaler (/64)
Clock Source
Prescaler (/2)
Prescaler (/4)
Prescaler (/8)
Prescaler (/2)
Prescaler (/4)
Prescaler (/8)
Falling edge
Rising edge
PCLK1
PCLK1
MOTOROLA
On
—
—
13-48