參數(shù)資料
型號(hào)： AS5140H-ASST
廠商： ams
文件頁(yè)數(shù)： 20/38頁(yè)
文件大?。?/td> 1279K
描述： IC ENCODER ROTARY 10BIT 16-SSOP
標(biāo)準(zhǔn)包裝： 2,000
傳感范圍： 45mT ~ 75mT
類型： 線性，旋轉(zhuǎn)編碼器 - 可編程
電源電壓： 3 V ~ 3.6 V，4.5 V ~ 5.5 V
電流 - 電源： 21mA
電流 - 輸出（最大）： 4mA
輸出類型： 數(shù)字式，PWM，10 位串行
特點(diǎn)： 可編程
工作溫度： -40°C ~ 150°C
封裝/外殼： *
供應(yīng)商設(shè)備封裝： *
包裝： *
www.austriamicrosystems.com/AS5140H
Revision 1.4
19 - 37
AS5140H
Data Sheet - Detailed Description
7.6 Programming the AS5140H
Note:   A detailed description of the austriamicrosystems low voltage polyfuse OTP programming method is given in Application Note AN514X-
10, which can be downloaded from the austriamicrosystems website. The OTP programming description in this datasheet is for general
information only.
After power-on, programming the AS5140H is enabled with the rising edge of CSn with Prog = high and CLK = low. The AS5140H programming
is a one-time-programming (OTP) method, based on polysilicon fuses. The advantage of this method is that a programming voltage of only 3.3V
is required for programming. The OTP consists of 52 bits, of which 21 bits are available for user programming. 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 programming, 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.
The OTP memory can be accessed in several ways:
 Load Operation: The Load operation reads the OTP fuses and loads the contents into the OTP register. Note that the 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 program the 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 Program operation 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 programming. For each pro-
grammed 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.
7.6.1   OTP Memory Assignment
Table 19. OTP Bit Assignment
Bit
Symbol
Function
mbit1
Factory Bit
51
Md0
Incremental Output Mode Selection
50
Md1
49
Div0
48
Div1
47
Index
46
Z0
10 bit Zero Position
:
:
37
Z9
36
CCW
Direction
35
RA0
Redundancy Address
:
:
31
RA4
30
FS 0
Factory Bit
:
FS 1
Factory Bit
18
FS 12
Factory Bit
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AS5140H-DB 制造商:ams 功能描述:AS5140H Demo Board
AS5140H-PB 制造商:ams 功能描述:AS5140H Progamming Board
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