CP3BT23_14 Datasheet, PDF (258/324 Pages) Texas Instruments – CP3BT23 Reprogrammable Connectivity Processor with Bluetooth and Dual CAN Interfaces

CP3BT23
SNOSCX3A – JULY 2013 – REVISED JANUARY 2014
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26 Versatile Timer Unit (VTU)
The Versatile Timer Unit (VTU) contains four fully independent 16-bit timer subsystems. Each timer
subsystem can operate either as dual 8-bit PWM timers, as a single 16-bit PWM timer, or as a 16-bit
counter with 2 input capture channels. These timer subsystems offers an 8-bit clock prescaler to
accommodate a wide range of system frequencies.
The VTU offers the following features:
• The VTU can be configured to provide:
– Eight fully independent 8-bit PWM channels
– Four fully independent 16-bit PWM channels
– Eight 16-bit input capture channels
• The VTU consists of four timer subsystems, each of which contain:
– A 16-bit counter
– Two 16-bit capture / compare registers
– An 8-bit fully programmable clock prescaler
• Each of the four timer subsystems can operate in the following modes:
– Low power mode, i.e. all clocks are stopped
– Dual 8-bit PWM mode
– 16-bit PWM mode
– Dual 16-bit input capture mode
• The VTU controls a total of eight I/O pins, each of which can function as either:
– PWM output with programmable output polarity
– Capture input with programmable event detection and timer reset
• A flexible interrupt scheme with:
– Four separate system level interrupt requests
– A total of 16 interrupt sources each with a separate interrupt pending bit and interrupt enable bit
258 Versatile Timer Unit (VTU)
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