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AS1112B-BQFT Datasheet(PDF) 3 Page - ams AG |
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AS1112B-BQFT Datasheet(HTML) 3 Page - ams AG |
3 / 20 page www.austriamicrosystems.com/LED-Driver-ICs/AS1112 Revision 1.13 2 - 19 AS1112 Datasheet - P i n o u t 4 Pinout Pin Assignments Figure 2. Pin Assignments (Top View) Pin Descriptions Table 2. Pin Descriptions Pin Number Pin Name Description 1 CLK Serial Data Shift Clock 2 SDI Serial Data Input 3 MODE Mode Select input with internal pulldown MODE = GND: Selects greyscale mode (see Setting Greyscale Brightness on page 12). MODE = VCC: Selects dot correction mode (see Setting Dot Correction on page 11). 4:11 OUT0:OUT7 Constant-Current Outputs 0:7 14:21 OUT8:OUT15 Constant-Current Outputs 8:15 22 XERR Error Output 0 = LED open detection or overtemperature condition is detected. 1 = Normal operation. 23 SDO Serial Data Output 24 GSCLK Greyscale Clock. Reference clock for greyscale PWM control 25 TEST Test Pin. This pin must be connected to GND (AS1112) to ensure normal operation. XTEST Test Pin. This pin must be connected to VCC (AS1112B, AS1112C) to ensure normal operation. 26 IREF Reference Current Terminal 27 VCC Power Supply Voltage 12,13,28 N/C This pin must not be connected. 29 PD Power Down input with internal pulldown (AS1112) 0 = normal operation mode 1 = powerdown mode N/C Not Connected (AS1112B, AS1112C) 30 GND Ground 31 OEN Blank Outputs 0 = OUTn outputs are controlled by the greyscale PWM control. 1 = OUTn outputs are forced off; the greyscale counter is reset. 32 LD Data Latch. The internal connections are switched by pin MODE. For LD (MODE = GND), the greyscale register receives new data. For LD (MODE = VCC), the dot correction register receives new data. 33 Thermal Pad Thermal Pad. This pin must be connected to GND to ensure normal operation. Thermal Pad 24 GSCLK 23 SDO 22 XERR 21 OUT15 20 OUT14 19 OUT13 18 OUT12 17 OUT11 8 OUT4 7 OUT3 6 OUT2 5 OUT1 4 OUT0 3 MODE 2 SDI 1 CLK AS1112 Thermal Pad 24 GSCLK 23 SDO 22 XERR 21 OUT15 20 OUT14 19 OUT13 18 OUT12 17 OUT11 8 OUT4 7 OUT3 6 OUT2 5 OUT1 4 OUT0 3 MODE 2 SDI 1 CLK AS1112B/C 33 33 |
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