mcf51ac256a Freescale Semiconductor, Inc, mcf51ac256a Datasheet - Page 203

• Manufacturer Part Number: mcf51ac256a
• Description: Mcf51ac Flexis
• Manufacturer: Freescale Semiconductor, Inc

11.1.3
The FTM features include:
11.1.4
When the MCU is in active BDM background or BDM foreground mode, the FTM temporarily suspends
all counting until the MCU returns to normal user operating mode. During stop mode, all FTM input clocks
Freescale Semiconductor
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FTM source clock is selectable
— Source clock can be the system clock, the fixed system clock or a clock from an external pin
— Fixed system clock source is synchronized to the system clock by an external synchronization
— External clock pin may be shared with any FTM channel pin or a separated input pin
— External clock source is synchronized to the system clock by FTM
Prescaler divide-by 1, 2, 4, 8, 16, 32, 64 or 128
FTM has a 16-bit counter
— It can be a free-running counter or a counter with initial and final value
— The counting can be up or up-down
Each channel can be configured for input capture, output compare or edge-aligned PWM mode
In input capture mode
— the capture can occur on rising edges, falling edges or both edges
— an input filter can be selected for some channels
In output compare mode the output signal can be set, cleared or toggled on match
All channels can be configured for center-aligned PWM mode
Each pair of channels can be combined to generate a PWM signal (with independent control of both
edges of PWM signal)
The FTM channels can operate as pairs with equal outputs, pairs with complimentary outputs or
independent channels (with independent outputs)
The deadtime insertion is available for each complementary pair
Generation of triggers to ADC (hardware trigger)
Software control of PWM outputs
A fault input for global fault control
The polarity of each channel is configurable
The generation of an interrupt per channel
The generation of an interrupt when the counter overflows
The generation of an interrupt when the fault condition is detected
Synchronized loading of write buffered FTM registers
Write protection for critical registers
Backwards compatible with TPM
circuit to FTM
Features
Modes of Operation
MCF51AC256 ColdFire Integrated Microcontroller Reference Manual, Rev. 5
FlexTimer Module (FTMV1)
11-3