AS1116-BSST(2009) 데이터 시트보기 (PDF) - austriamicrosystems AG
부품명
상세내역
제조사
AS1116-BSST Datasheet PDF : 20 Pages
| |||
AS1116
Datasheet - Detailed Description
Display brightness is controlled by an integrated pulse-width modulator which is controlled by the lower-nibble of the
Intensity Control Register. The modulator scales the average segment-current in 16 steps from a maximum of 15/16
down to 1/16 of the peak current set by RSET.
Table 16. Intensity Register Format
Register Data
Duty Cycle HEX Code MSB D2 D1 LSB
1/16 (min on)
2/16
0xX0
0xX1
0000
0001
3/16
0xX2
0010
4/16
0xX3
0011
5/16
0xX4
0100
6/16
0xX5
0101
7/16
0xX6
0110
8/16
0xX7
0111
Duty Cycle
9/16
10/16
11/16
12/16
13/16
14/16
15/16
15/16 (max on)
HEX Code
0xX8
0xX9
0xXA
0xXB
0xXC
0xXD
0xXE
0xXF
Register Data
MSB D2 D1 LSB
1000
1001
1010
1011
1100
1101
1110
1111
Table 17. Intensity Register Address
Register HEX Address
0x0A
0x10
0x11
0x12
0x13
Type
Global
Digit
Digit
Digit
Digit
Register Data
D7:D4
D3:D0
X
Global Intensity
Digit 1 Intensity
Digit 0 Intensity
Digit 3 Intensity
Digit 2 Intensity
Digit 5 Intensity
Digit 4 Intensity
Digit 7 Intensity
Digit 6 Intensity
Scan-Limit Register (0x0B)
The Scan-Limit Register controls which of the digits are to be displayed. When all 8 digits are to be displayed, the
update frequency is typically 0.8kHz. If the number of digits displayed is reduced, the update frequency is increased.
The frequency can be calculated using 8fOSC/N, where N is the number of digits. Since the number of displayed digits
influences the brightness, RSET should be adjusted accordingly.
Note: To avoid differences in brightness this register should not be used to blank parts of the display (leading zeros).
Table 18. Scan-Limit Register Format (Address (HEX) = 0x0B))
Scan Limit
Display digit 0 only
Display digits 0:1
Display digits 0:2
Display digits 0:3
HEX
Register Data
Code D7:D3 D2 D1 D0
0xX0 X 0 0 0
0xX1 X 0 0 1
0xX2 X 0 1 0
0xX3 X 0 1 1
Scan Limit
Display digits 0:4
Display digits 0:5
Display digits 0:6
Display digits 0:7
HEX Register Data
Code D7:D3 D2 D1 D0
0xX4 X 1 0 0
0xX5 X 1 0 1
0xX6 X 1 1 0
0xX7 X 1 1 1
www.austriamicrosystems.com
Revision 1.04
13 - 20
Share Link: 