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STMPE16M31 数据表(PDF) 39 Page - STMicroelectronics |
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STMPE16M31 数据表(HTML) 39 Page - STMicroelectronics |
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39 / 85 page  STMPE16M31, STMPE24M31 PWM controller Doc ID 16174 Rev 4 39/85 11 PWM controller The PWM controller allows to control the brightness, ramping/fading and blinking of LEDs. The STMPE24M31/16M31 features 8 independent PWM controllers. The PWM controllers outputs are connected to the GPIO through the PWM array controller. The PAC provides the following list of flexibility to the overall PWM’s system: – Each GPIO may utilize the output of 1 of the 8 PWM controllers. – Up to 16 GPIO may be controlled by the same PWM at the same time. – Each of the PWM could be programmed to be triggered by a touch sensing input. The PWM controller uses a base clock of 512 kHz, clock pulses have a variable duty cycle of 0 to 100% in 16 steps. The PWM’s frequency is 32 kHz (to be out of audio range). 11.1 PWM function register map This section lists and describes the PWM function registers of the STMPE16M31 and STMPE24M31 devices, starting with a register map and then provides detailed descriptions of register types. Table 12. PWM function registers Address Register name Reset value R/W Description 0x30 PWM_MASTER_EN 0x00 RW PWM master enable 0x40 PWM_0_SET 0x00 RW PWM0 setup 0x41 PWM_0_CTRL 0x00 RW PWM0 control 0x42 PWM_0_RAMP 0x00 RW PWM0 ramp rate 0x43 PWM_0_TRIG 0x00 RW PWM0 trigger 0x44 PWM_1_SET 0x00 RW PWM1 setup 0x45 PWM_1_CTRL 0x00 RW PWM1 control 0x46 PWM_1_RAMP 0x00 RW PWM1 ramp rate 0x47 PWM_1_TRIG 0x00 RW PWM1 trigger 0x48 PWM_2_SET 0x00 RW PWM2 setup 0x49 PWM_2_CTRL 0x00 RW PWM2 control 0x4A PWM_2_RAMP 0x00 RW PWM2 ramp rate 0x4B PWM_2_TRIG 0x00 RW PWM2 trigger 0x4C PWM_3_SET 0x00 RW PWM3 setup 0x4D PWM_3_CTRL 0x00 RW PWM3 control 0x4E PWM_3_RAMP 0x00 RW PWM3 ramp rate 0x4F PWM_3_TRIG 0x00 RW PWM3 trigger Obsolete Product(s) - Obsolete Product(s) |
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