STMPE1601 STMicroelectronics, STMPE1601 Datasheet - Page 40

• Manufacturer Part Number: STMPE1601
• Description: 16-bit Enhanced Port Expander With Keypad And Pwm Controller Xpander Logic
• Manufacturer: STMicroelectronics

Basic PWM controller
11.1
11.2
40/60
Interrupt on basic PWM controller
A basic PWM controller can be programmed to generate interrupts at the completion of a
blinking sequence. However, there are some limitations:
Trigger feature
The basic PWM controller can be programmed to be controlled by an external “trigger”
signal. This feature can be used to implement:
●
●
A 120 μS pulse is generated at PWM output when the programmed timer has elapsed
without getting any trigger for the trigger source.
a)
b)
c)
d)
One shot trigger circuit
Watchdog timer
Each basic PWM controller has its own bit in the interrupt enable/status registers.
If enabled, completion in any of the PWM controller triggers interrupts. No interrupt
will be generated if infinite repetition is set.
In WDT mode, an interrupt is generated when timeout occurs
In One-shot mode
If Auto-reload, interrupt is generated every time a valid trigger is detected
If Non-auto-reload, an interrupt is generated just once
STMPE1601