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參數(shù)資料
| 型號： | AS5020 |
| 廠商： | AUSTRIAMICROSYSTEMS AG |
| 元件分類： | 模擬信號調理 |
| 英文描述： | 6-BIT MAGNETIC ANGULAR POSITION ENCODER WITH SERIAL INTERFACE |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, PDSO8 |
| 封裝： | SOIC-8 |
| 文件頁數(shù)： | 5/11頁 |
| 文件大?。?/td> | 338K |
| 代理商： | AS5020 |
6-Bit Magnetic Position Encoder
–Data Sheet Rev.1.0
AS5020
Rev. n/c
Page 5/11
Feb 2001
PD/CS
CLK
DATA
D4
D0
Latch
actual value
Next
value
1
2
7
8
9
D5
NVR
Parity
D5
D4 D0
NVR
Parity
D5
angle 1
angle 2
angle n
Figure 3 Daisy Chain read out
Zero Position Programming
A simple single pin programming allows changing the initial zero position. It is easy to program
permanently a new zero-reference into the internal OTP (one time programmable) ROM. This
allows a fast and economic magnet placement since the intrinsic orientation is not important.
Single Pin Programming is provided via the PROG pin. Fig.4 shows the typical programming
sequence needed for fixing the new zero position.
Zero Position Programming Sequence
Before calibration, the new zero position must be adjusted in measurement mode (PD/CS=0).
The rising edge of PD/CS gets the actual position and stores it internally for the permanent
programming. A high level at the PROG Pin during power-down (PD/CS=1) with a minimum
duration of 300
V
#
HQDEOHV
#
SURJUDPPLQJ
1#
$IWHU
#
RQH
#
LQLWLDO
#
GXPP\
#
ELW
#
SXOVH
/#
VL[
#
SXOVHV
#
RI
#;
9
28
μ
s
select the latched position information and zap the reference value into the OTP ROM.
Continuous Read Out Mode Selection
An optional 9
th
pulse after the initialisation pulse, the dummy pulse, and the 6 data pulses can
be used to set Continuous Read Out Mode (see Fig.4).
PROG [V]
8
0
t
Initialisation
Zero Position Programming
1
2
3
4
Bit 0
Bit 1
Bit 3
Bit 2
Bit 5
Bit 4
5
6
7
8
Optional
Cont.
Mode
Dummy
Calibration Position
Latched
Measurement
Enable
CS
Enable
Programming
t
ProgEN
Figure 4 Programming sequence
Note: Daisy Chain configuration is not possible in Continuous Read Out Mode.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
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