STMPE2401TBR STMicroelectronics, STMPE2401TBR Datasheet - Page 37

• Manufacturer Part Number: STMPE2401TBR
• Description: IC I/O EXPANDER I2C 24B 36TFBGA
• Manufacturer: STMicroelectronics

Specifications of STMPE2401TBR

• Interface: I²C
• Number Of I /o: 24
• Interrupt Output: Yes
• Frequency - Clock: 400kHz
• Voltage - Supply: 1.65 V ~ 1.95 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 36-TFBGA
• Includes: Keypad, POR, PWM
• For Use With: 497-6426 - BOARD EVAL BASED ON STMPE2401
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-6133-2

STMPE2401
12
PWM commands
The STMPE2401 PWM Controller works as a simple MCU, with program space of 64
instructions and a simple instruction set. The instructions are all 16 bits in length. The 3
most significant bits are used to identify the commands.
Table 34. PWM commands
Table 35. Identification of instructions
Set Minimum (SMIN) Load the PWM counter with the value of 0x0 and the pwm_x_out will result in
Go to Start (GTS)
Trigger (TRIG)
Set Maximum
SetFullScale
SetMinimum
Instruction
Instruction
BRANCH
GoToStart
Reserved
(SMAX)
RAMP
Branch
Trigger
END
Ramp
End
Branch to the address 0x0 and execute from 0x0 and onwards.
This instruction starts the PWM counters and set the pwm_x_out with the
result from the counting.
Load the PWM counter with the value of 0xff and the pwm_x_out will result in
logic level low.
logic level high.
Branch to a relative or an absolute address to execute with the looping
capability. There are 4 loop counters available and these allow 4 nested
loops.
End the instruction execution by resetting and interrupting to the host.
Capable of waiting as well as sending triggers to another PWM channel.
Bit 15
0
0
0
0
1
1
1
1
Description
Bit 14
0
1
1
0
-
-
-
-
PWM commands
Bit 13
1
0
1
0
-
-
-
-
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