S9S12GA240F0MLL Freescale Semiconductor, S9S12GA240F0MLL Datasheet - Page 655
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S9S12GA240F0MLL
Manufacturer Part Number
S9S12GA240F0MLL
Description
16-bit Microcontrollers - MCU 16BIT 240KB FLASH
Manufacturer
Freescale Semiconductor
Datasheet
1.S9S12G96F0CLL.pdf
(1292 pages)
Specifications of S9S12GA240F0MLL
Rohs
yes
Core
S12
Processor Series
MC9S12G
Data Bus Width
16 bit
Maximum Clock Frequency
25 MHz
Program Memory Size
240 KB
Data Ram Size
4 KB
On-chip Adc
Yes
Operating Supply Voltage
3.13 V to 5.5 V
Operating Temperature Range
- 40 C to + 125 C
Package / Case
LQFP-100
Mounting Style
SMD/SMT
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
S9S12GA240F0MLL
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
- Current page: 655 of 1292
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19.4.2
The main part of the PWM module are the actual timers. Each of the timer channels has a counter, a period
register and a duty register (each are 8-bit). The waveform output period is controlled by a match between
the period register and the value in the counter. The duty is controlled by a match between the duty register
and the counter value and causes the state of the output to change during the period. The starting polarity
of the output is also selectable on a per channel basis. Shown below in
for the PWM timer.
19.4.2.1
Each PWM channel has an enable bit (PWMEx) to start its waveform output. When any of the PWMEx
bits are set (PWMEx = 1), the associated PWM output signal is enabled immediately. However, the actual
PWM waveform is not available on the associated PWM output until its clock source begins its next cycle
due to the synchronization of PWMEx and the clock source. An exception to this is when channels are
concatenated. Refer to
Freescale Semiconductor
Clock Source
PWMEx
(Clock Edge
PWM Channel Timers
PWM Enable
Sync)
Gate
The first PWM cycle after enabling the channel can be irregular.
Up/Down
Section 19.4.2.7, “PWM 16-Bit Functions”
8-Bit Counter
Figure 19-16. PWM Timer Channel Block Diagram
PWMCNTx
Q
Q
Reset
MC9S12G Family Reference Manual, Rev.1.23
T
R
NOTE
8-bit Compare =
8-bit Compare =
PWMPERx
PWMDTYx
CAEx
for more detail.
Figure 19-16
Pulse-Width Modulator (S12PWM8B8CV2)
T
R
Q
Q
PPOLx
From Port PWMP
M
U
Data Register
X
is the block diagram
M
U
X
To Pin
Driver
657
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