STEVAL-ICB002V1 STMicroelectronics, STEVAL-ICB002V1 Datasheet - Page 39

• 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

STMPE821
PWM_n_SETUP
Address:
Type:
Reset:
Description:
7
[7:4] BRIGHTNESS:
[3:1] TIMING[3:0] is the time unit from which the duration of the ON period and OFF period is
[0] Write '1' to activate ramp mode
6
0xB0
R/W
0x00
PWM setup register.
This defines the duty cycle during the ON period of the PWM channel output which in turn
determines the brightness level of the LED that the PWM output drives.
0000: Duty cycle ratio 1:15 (6.25%, minimum brightness)
0001: Duty cycle ratio 2:14 (12.50%)
0010: Duty cycle ratio 3:13 (18.75%)
0011: Duty cycle ratio 4:12 (25.00%)
0100: Duty cycle ratio 5:11 (31.25%)
0101: Duty cycle ratio 6:10 (37.50%)
0110: Duty cycle ratio 7: 9 (43.75%)
0111: Duty cycle ratio 8: 8 (50.00%)
1000: Duty cycle ratio 9: 7 (56.25%)
1001: Duty cycle ratio 10: 6 (62.50%)
1010: Duty cycle ratio 11: 5 (68.75%)
1011: Duty cycle ratio 12: 4 (75.00%)
1100: Duty cycle ratio 13: 3 (81.25%)
1101: Duty cycle ratio 14: 2 (87.50%)
1110: Duty cycle ratio 15: 1 (93.75%)
1111: Duty cycle ratio 16: 0 (100.00%, maximum brightness)
defined in:
"000" = 20 mS
"001" = 40 mS
"010" = 80 mS
"011" = 160 mS
"100" = 320 mS
"101" = 640 mS
"110" = 1280 mS
"111" = 2560 mS
BRIGHTNESS
5
Doc ID 14478 Rev 5
4
3
PWM_n setup register (n=0-3)
2
TIMING
Basic PWM controller
1
0
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