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參數(shù)資料
| 型號： | ATS636LSETN-T |
| 廠商： | Allegro MicroSystems, Inc. |
| 英文描述： | RESISTOR, FIXED, FILM, CHIP |
| 中文描述： | 可編程回到偏霍爾效應(yīng)的聚烯烴功能開關(guān) |
| 文件頁數(shù)： | 7/15頁 |
| 文件大?。?/td> | 814K |
| 代理商： | ATS636LSETN-T |
ATS635LSE and ATS636LSE
PROGRAMMABLE TRUE POWER-ON HALL-EFFECT GEAR-TOOTH SWITCHES
Page 7 of 15
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
Copyright 200
5
Allegro MicroSystems, Inc.
FUNCTION DESCRIPTION: ADDRESSING / PROGRAMMING PROTOCOL
The ATS635LSE and ATS636LSE magnetic operate point (B
OP
) is programmed by serially addressing the devices
through the supply terminal (1). After the correct operate point is determined, the device programming bits are selected
and blown, then a lock bit is selected and blown to prevent any further (accidental) programming.
Addressing:
Bop is programmable in both the positive and negative direction from its initial value. Addressing is used to
determine the desired code, while programming is used to lock the code. A unique key is needed to blow fuses, while
addressing as described below does not allow for the device to be programmed accidentally.
Addressing with positive polarity.
The magnetic operate point (B
OP
) is adjustable using 7 bits or 128 addresses. The
Addresses are sequentially selected (Figure 2) until the required operate point is reached. The first address must be
selected with a High voltage pulse (V
PP
), while the remaining pulses should be V
PH
Pulses. Note that the difference
between B
OP
and the magnetic release point (B
RP
), the Hysteresis (B
HYS
), is fixed for all addresses.
0
V
PL
V
PH
t
d(1)
t
d(0)
C
C
C
C
C
C
(
V
PP
Figure 2 – Addressing Pulses: Positive Polarity
Addressing with negative polarity.
The magnetic operate point (B
OP
) is adjustable with negative polarity using 7 bits or
128 addresses. To invert the polarity it is necessary to first apply a keying sequence (Figure 3). The polarity key contains
a V
PP
pulse and at least 1 V
PH
pulse, but no more than 6 V
PH
pulses; the key in Figure 3 shows 2 V
PH
pulses. The
addresses are then sequentially selected until the required operate point is reached. The first address must be selected
with a High voltage pulse (V
PP
), while the remaining pulses should be V
PH
Pulses.
0
V
PP
V
PL
V
PH
t
d(1)
t
d(0)
C
C
C
C
C
C
(
P
K
Figure 3 – Addressing Pulses: Negative Polarity
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