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CAT9532YI-T2 Datasheet(PDF) 11 Page - ON Semiconductor |
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CAT9532YI-T2 Datasheet(HTML) 11 Page - ON Semiconductor |
11 / 14 page CAT9532 www.onsemi.com 11 Application Information Programming Example The following programming sequence is an example how to set: • LED0 to LED3: ON • LED4 to LED7: Dimming at 30% brightness; Blink 1: 152 Hz, duty cycle 30% • LED8 to LED11: Blink at 2 Hz with 50% duty cycle (Blink 2) • LED12 to LED15: OFF Figure 14. Typical Application 5 V 5 V LED0 LED1 LED2 LED3 LED4 LED5 LED6 LED7 LED8 LED9 LED10 LED11 LED12 LED13 LED14 LED15 A2 A1 A0 SDA SCL CAT9532 SDA SCL GND 10 k W (x 3) GPIOs RESET RESET VCC VCC VSS I2C/SMBus MASTER Command Description I2C Data 1 START 2 Send Slave address, A0−A2 = low C0h 3 Command Byte: AI=”1”; PSC0 Addr 12h 4 Set Blink 1 at 152Hz, T_Blink1 = 1/152 Write PSC0 = 0 00h 5 Set PWM0 duty cycle to 30% PWM0 / 256 = 0.3; Write PWM0=77 4Dh 6 Set Blink 2 at 2Hz, T_Blink1 = 1/2 Write PSC1 = 75 4Bh 7 Set PWM1 duty cycle to 50% PWM1 / 256 = 0.5; Write PWM1=128 80h 8 Write LS0: LED0 to LED3 = ON 55h 9 Write LS1: LED4 to LED7 at Blink1 AAh 10 Write LS2: LED8 to LED11 at Blink2 FFh 11 Write LS3: LED12 to LED15 = OFF 00h 12 STOP Figure 15. qJA Transient Response Curve for TSSOP−24 Table 11. THERMAL RATINGS Parameters Ratings Units qJA TSSOP−24 (Note 8) 124 °C/W 8. Based on JEDEC EIA/JESD51−3 (2.0 oz Cu, 100 mm2) |
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