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参数资料
| 型号： | AS1118-BQFT |
| 厂商： | ams |
| 文件页数： | 11/21页 |
| 文件大小： | 0K |
| 描述： | IC DRIVER 64LED W/DELAY 24-TQFN |
| 标准包装： | 1 |
| 系列： | * |
AS1118
Datasheet - D e t a i l e d D e s c r i p t i o n
Table 8. Register Address Map
Register
D15
D14
D13
D12
D11
Address
D10 D9
D8
D7:D0
Page
Diagnostic Digit 0
Diagnostic Digit 1
Diagnostic Digit 2
Diagnostic Digit 3
Diagnostic Digit 4
Diagnostic Digit 5
Diagnostic Digit 6
Diagnostic Digit 7
X
X
X
X
X
X
X
X
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Note: Write operation: D14=0; Read operation: D14=1.
The Shutdown Register controls AS1118 shutdown mode.
Table 9. Shutdown Register Format (Address (HEX) = 0x0C))
HEX
Mode
Shutdown Mode, Reset Feature Register to Default Settings
Shutdown Mode, Feature Register Unchanged
Normal Operation, Reset Feature Register to Default Settings
Normal Operation, Feature Register Unchanged
Register Data
Code D7 D6 D5 D4 D3 D2 D1 D0
0x00 0 X X X X X X 0
0x80 1 X X X X X X 0
0x01 0 X X X X X X 1
0x81 1 X X X X X X 1
Decode Enable Register (0x09)
The Decode Enable Register sets the decode mode. BCD/HEX decoding (either BCD code – characters 0:9, E, H, L,
P, and -, or HEX code – characters 0:9 and A:F) is selected by bit D2 (page 14) of the Feature Register. The Decode
Enable Register is used to select the decode mode or no-decode for each digit. Each bit in the Decode Enable Regis-
ter corresponds to its respective display digit (i.e., bit D0 corresponds to digit 0, bit D1 corresponds to digit 1 and so
on). Table 11 lists some examples of the possible settings for the Decode Enable Register bits.
Note: A logic high enables decoding and a logic low bypasses the decoder altogether.
When decode mode is used, the decoder looks only at the lower-nibble (bits D3:D0) of the data in the Digit-Registers,
disregarding bits D6:D4. Bit D7 sets the decimal point (SEG DP) independent of the decoder and is positive logic (bit
D7 = 1 turns the decimal point on). Table 11 lists the code-B font; Table 12 lists the HEX font.
When no-decode mode is selected, data bits D7:D0 of the Digit-Registers correspond to the segment lines of the
AS1118. Table 13 shows the 1:1 pairing of each data bit to the appropriate segment line.
Table 10. Decode Enable Register Format Examples
HEX
Decode Mode
No decode for digits 7:0
Code-B/HEX decode for digit 0. No decode for digits 7:1
Code-B/HEX decode for digit 0:2. No decode for digits 7:3
Register Data
Code D7 D6 D5 D4 D3 D2 D1 D0
0x00 0 0 0 0 0 0 0 0
0x01 0 0 0 0 0 0 0 1
0x07 0 0 0 0 0 1 1 1
Code-B/HEX decode for digits 0:5. No decode for digits 7:6
0x3F 0
0 1 1 1 1 1 1
Code-B/HEX decode for digits 0,2,5. No decode for digits 1, 3, 4, 6, 7
0x25 0 0 1 0 0 1 0 1
www.austriamicrosystems.com/LED-Driver-ICs/AS1118
Revision 1.01
10 - 20
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