STEVAL-ICB002V1 STMicroelectronics, STEVAL-ICB002V1 Datasheet - Page 36

• Manufacturer Part Number: STEVAL-ICB002V1
• Description: BOARD EVAL TOUCH STM32/STMPE821
• Manufacturer: STMicroelectronics

Specifications of STEVAL-ICB002V1

• Sensor Type: Touch, Capacitive
• Sensing Range: 3 Button/Key
• Interface: USB
• Voltage - Supply: 3.3V
• Embedded: Yes, MCU, 32-Bit
• Utilized Ic / Part: STMPE821
• Silicon Manufacturer: STMicroelectronics
• Kit Contents: Board
• Features: PWM/GPIO Output, Multiple Touch Detection, Demonstrates Up To 3 Capacitive Touch Keys
• Svhc: No SVHC (15-Dec-2010)
• For Use With: 497-10173 - BOARD EVAL S-TOUCH STM32
• Lead Free Status / RoHS Status: Lead free by exemption / RoHS compliant by exemption
• Sensitivity: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 497-10167

Basic PWM controller
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Figure 9.
“On” period = period 0[1:0] * time unit [3:0]
“Off” period = period 1[1:0] * time unit [3:0]
Duty cycle during “on” period = brightness [7:4]
Number of cycles = repetition [3:0]
Ramp up rate is programmable.
Figure 10. Fixed brightness output
“On” period = period 0[1:0] * time unit [3:0]
Off period = don't care
Duty cycle during “on” period = brightness [7:4]
Number of cycles = repetition [3:0] = 0 (means infinite repetition)
Duty cycle
cycle
Duty
Ramps with programmable brightness, ON/OFF period and repetition
period
ON
period
Off
Doc ID 14478 Rev 5
time unit
1 time
unit
period
ON
period
Off
Time
Time
STMPE821
CS00056
CS00055