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STMPE2403 Datasheet(PDF) 40 Page - STMicroelectronics

Part # STMPE2403
Description  24-bit Enhanced port expander with Keypad and PWM controller Xpander logic
PDF  63 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STMPE2403 Datasheet(HTML) 40 Page - STMicroelectronics

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PWM controller
STMPE2403
40/63
11
PWM controller
The STMPE2403 PWM controller provides 3 independent PWM outputs used to generate
light effect; if the PWM outputs are not used, these pins can be used as GPIO.
Figure 7.
PWM controller
Instructions are downloaded into the memory via the I2C connection.
32KHz
Primary Clock
Prescaler
(Divide by 16 or 512)
Divide by “Step Time”
(Up/Down by “Step
Sign”)
Comparator
PWM Count
Count from 0-255
based on instructions
PWM Ref
Counts from 0-255
repeatedly
Increment
Counter
64Hz-2KHz
1Hz-2KHz
Instruction Word 0
Instruction Word 1
Instruction Word 2
Instruction Word 63
Instruction
Processor
INT
PWM Output
Trigger Bus



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