ams AG AS5045 Manuel d'utilisation - Page 3

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AS5045 12-BIT PROGRAMMABLE MAGNETIC ROTARY ENCODER
Adapter PCB Operation Manual

2 General Description

The AS5045 is a system-on-chip, combining
integrated Hall elements, analog front end and
digital signal processing in a single device. It
provides incremental output signals and the
absolute angular position of a magnet that is placed
either above or below the device.
The AS5045 can be configured to specific customer
requirements by programming the integrated OTP
(one time programmable) register. An internal
voltage regulator allows the AS5045 to operate at
either 3.3 V or 5 V supplies.
Figure 2: Typical arrangement AS5045 and magnet

3 Pin Configuration

1
MagINCn
MagDECn
2
3
NC
4
NC
5
NC
6
Mode
VSS
7
Prog_DI
8
Figure 3: Pin configuration SSOP16
Revision A.02, 14-Mar-07

4 Pin Description

P
i
P
i
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
VDD5V
16
15
VDD3V3
14
NC
13
NC
12
PWM
CSn
11
CLK
10
9
DO
www.austriamicrosystems.com
n
S
y
m
b
o
l
T
y
p
e
D
e
n
S
y
m
b
o
l
T
y
p
e
D
e
Magnet Field Magnitude INCrease;
active low, indicates a distance
MagINCn
DO_OD
reduction between the magnet and
the device surface. See Error!
Reference source not found.
Magnet Field Magnitude DECrease;
active low, indicates a distance
MagDECn
DO_OD
increase between the device and the
magnet. See Error! Reference
source not found.
NC
-
must be left unconnected
NC
-
must be left unconnected
NC
-
must be left unconnected
select between slow (open, low :VSS)
Mode
-
and fast (high) mode. Internal pull-
down resistor.
VSS
S
Negative Supply Voltage (GND)
OTP Programming Input and Data
Input for Daisy Chain mode. Internal
Prog_DI
DI_PD
pull-down resistor (~74kΩ).
Connect to VSS if not used
Data Output of
DO
DO_T
Synchronous Serial Interface
Clock Input of
DI,
CLK
Synchronous Serial Interface;
ST
Schmitt-Trigger input
Chip Select, active low; Schmitt-
DI_PU,
CSn
Trigger input, internal pull-up resistor
ST
(~50kΩ)
Pulse Width Modulation of approx.
PWM
DO
1kHz; LSB in Mode3.x
NC
-
Must be left unconnected
NC
-
Must be left unconnected
3V-Regulator Output, internally
regulated from VDD5V.Connect to
VDD3V3
S
VDD5V for 3V supply voltage. Do not
load externally.
VDD5V
S
Positive Supply Voltage, 3.0 to 5.5 V
Table 1: Pin description
s
c
r
i
p
t
i
o
n
s
c
r
i
p
t
i
o
n
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