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參數(shù)資料
| 型號(hào)： | AS5245 |
| 廠商： | AUSTRIAMICROSYSTEMS AG |
| 元件分類： | 同步/旋轉(zhuǎn)傳感器 |
| 英文描述： | 12-bit Rotary Position Sensor; Package Type: QFN(5x5)-32; Temperature Range: -40 - +140 °C; Resolution: 12-bit rotary (4096 steps); Automotive Qualification: X; Output Interface: SSI & PWM; Supervised Voltages (IN1): 5,00; Supply Voltage: 4,50-5,50 |
| 封裝： | QFN(5x5)-32 |
| 文件頁數(shù)： | 17/31頁 |
| 文件大?。?/td> | 871K |
| 代理商： | AS5245 |
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AS5245
Data Sheet - Application Information
9 Application Information
The benefits of AS5245 are as follows:
Complete system-on-chip
Angle measurement with programmable range up to 360o
High reliability due to non-contact magnetic sensing
Ideal for applications in harsh environments
Robust system tolerant to magnet msalignment, airgap variations, temperature variations and external magnetic fields
No calibration required
Building of redundancy systems with plausibility checks
9.1 Programming the AS5245
After power-on, programmng the AS5245 is enabled with the rising edge of CSn with PDIO = high and CLK = low
The AS5245 programmng is a one-time programmng (OTP) method, based on poly silicon fuses. The advantage of this method is that a
programmng voltage of only 3.3V to 3.6V is required for programmng.
The OTP consists of 52 bits, of which 21 bits are available for user programmng. The remaining 31 bits contain factory settings and a unique
chip identifier (Chip-ID).
A single OTP cell can be programmed only once. Per default, the cell is “0”; a programmed cell will contain a “1”. While it is not possible to reset
a programmed bit from“1” to “0”, multiple OTP writes are possible, as long as only unprogrammed “0”-bits are programmed to “1”.
Independent of the OTP programmng, it is possible to overwrite the OTP register temporarily with an OTP write command at any time. This
setting will be cleared and overwritten with the hard programmed OTP settings at each power-up sequence or by a LOAD operation. Use
application note AN514X_10
to get more information about the programmng options.
The OTP memory can be accessed in the following ways:
Load Operation:
The Load operation reads the OTP fuses and loads the contents into the OTP register. A Load operation is automatically
executed after each power-on-reset.
Write Operation:
The Write operation allows a temporary modification of the OTP register. It does not programthe OTP. This operation can
be invoked multiple times and will remain set while the chip is supplied with power and while the OTP register is not modified with another
Write or Load operation.
Read Operation:
The Read operation reads the contents of the OTP register, for example to verify a Write command or to read the OTP
memory after a Load command.
Program Operation:
The Programoperation writes the contents of the OTP register permanently into the OTP ROM
Analog Readback Operation:
The Analog Readback operation allows a quantifiable verification of the programmng. For each
programmed or unprogrammed bit, there is a representative analog value (in essence, a resistor value) that is read to verify whether a bit
has been successfully programmed or not.
9.1.1 Zero Position Programming
Zero position programmng is an OTP option that simplifies assembly of a system as the magnet does not need to be manually adjusted to the
mechanical zero position. Once the assembly is completed, the mechanical and electrical zero positions can be matched by software. Any
position within a full turn can be defined as the permanent new zero position.
For zero position programmng, the magnet is turned to the mechanical zero position (e.g. the “off”-position of a rotary switch) and the actual
angular value is read.
This value is written into the OTP register bits Z35:Z46.
Note:
The zero position value may also be modified before programmng, e.g. to programan electrical zero position that is 180o (half turn)
fromthe mechanical zero position, just add 2048 to the value read at the mechanical zero position and programthe new value into the
OTP register.
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| AS5245 AB | 功能描述:BOARD ADAPTER AS5245 RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 評(píng)估板 - 傳感器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- |
| AS5245 DB | 功能描述:BOARD DEMO AS5245 RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 評(píng)估板 - 傳感器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- |
| AS5245_1 | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:Programmable 360?o Magnetic Angle Encoder with Absolute SSI and PWM Output |
| AS5245-DB | 功能描述:磁傳感器開發(fā)工具 AS5245 Demo Board RoHS:否 制造商:Maxim Integrated 工具用于評(píng)估: 接口類型: 工作電壓: |
| AS5245-HMFM | 功能描述:IC ENCODER ROTARY 32-QFN 制造商:ams 系列:汽車級(jí)，AEC-Q100 零件狀態(tài):有效 編碼器類型:磁性 輸出類型:正交（增量） 每轉(zhuǎn)脈沖數(shù):- 電壓 - 電源:3 V ~ 3.6 V，4.5 V ~ 5.5 V 致動(dòng)器類型:外磁鐵，不含 棘爪:無 內(nèi)置開關(guān):無 安裝類型:表面貼裝 朝向:- 端子類型:SMD（SMT）接片 旋轉(zhuǎn)壽命（最少次數(shù)）:- 標(biāo)準(zhǔn)包裝:1 |
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