AS1112B 데이터 시트보기 (PDF) - austriamicrosystems AG
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AS1112B Datasheet PDF : 18 Pages
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AS1112
Datasheet - Pinout
4 Pinout
Pin Assignments
Figure 2. Pin Assignments (Top View)
CLK 1
SDI 2
MODE 3
OUT0 4
OUT1 5
OUT2 6
OUT3 7
OUT4 8
AS1112
Thermal
Pad
33
24 GSCLK
23 SDO
22 XERR
21 OUT15
20 OUT14
19 OUT13
18 OUT12
17 OUT11
CLK 1
SDI 2
MODE 3
OUT0 4
OUT1 5
OUT2 6
OUT3 7
OUT4 8
AS1112B
Thermal
Pad
33
24 GSCLK
23 SDO
22 XERR
21 OUT15
20 OUT14
19 OUT13
18 OUT12
17 OUT11
Pin Descriptions
Table 2. Pin Descriptions
Pin Number Pin Name
Description
1
CLK
Serial Data Shift Clock
2
SDI
Serial Data Input
Mode Select input with internal pulldown
3
MODE 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
Error Output
22
XERR 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
TEST Test Pin This pin must be connected to GND (AS1112) to ensure normal operation.
25
XTEST Test Pin This pin must be connected to VCC (AS1112B) 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.
Power Down input with internal pulldown (AS1112)
PD
0 = normal operation mode
29
1 = powerdown mode
N/C
Not Connected (AS1112B)
30
GND
Ground
Blank Outputs
31
OEN
0 = OUTn outputs are controlled by the greyscale PWM control.
1 = OUTn outputs are forced off; the greyscale counter is reset.
Data Latch. The internal connections are switched by pin MODE.
32
LD
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.
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Revision 1.06
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