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參數(shù)資料
| 型號： | AD5100YRQZ-RL7 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 電源管理 |
| 英文描述： | System-Management IC with Programmable Quad Voltage Monitoring and Supervisory Functions |
| 中文描述： | 4-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO16 |
| 封裝： | 0.025 INCH PITCH, ROHS COMPLIANT, MO-137AB, QSOP-16 |
| 文件頁數(shù)： | 27/32頁 |
| 文件大?。?/td> | 495K |
| 代理商： | AD5100YRQZ-RL7 |
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Preliminary Technical Data
AD5100
Rev. PrJ | Page 27 of 32
Programming
Sequence
Comment
S
0x5C
A
0x01
A
0x8F
A
P
Delay
S
0x5D
Start
Slave
Addr
ess
+
Write
Ack
Set
V
1MON
OV
Thres
hold
Ack
OTP
at
setti
ng
15
Ack
Stop
Wait
for
30ms
Start
Slave
Addr
ess
+
Read
Figure 24. Example of Executing OTP and a Successful Validation
When all default registers have been programmed, the lock bit
should be set. User programmed defaults won’t become active until
the first power cycle after the lock bit is set. Programming the lock
bit is done in exactly the same manner as all other registers.
Temporary Over-Ride of Default Settings (Over-Ride
Function)
As stated previously in the register map section, even with the lock
bit set, it is possible to temporarily over-ride the default values of
any of the permanently programmable registers. To Over-Ride a
permanent setting in a particular register, the following sequence
should be used:
1.
Set bit [3] in register 0x16 (Special Functions 1)
2.
Write the desired temporary data to the register of choice
While the Over-Ride bit is set in register 0x18, the user may over-
ride any registers they wish by simply writing to them with new
data.
To revert an over-ridden register back to its default setting, the
following sequence should be used:
1.
Clear bit [3] in register 0x16
2.
Write a dummy byte to the register of choice
Clearing the Over-Ride bit in register 0x18 does not cause all over-
ridden registers to revert back to their defaults at the same time.
For example, imagine the user had over-ridden registers 0x01, 0x02
& 0x03. If the user now cleared the Over-Ride bit in register 0x16
and wrote a dummy byte to register 0x01, it would revert back to its
default value. However registers 0x02 & 0x03 would still contain
their Over-Ride data. To revert both registers back to their defaults,
the user must write dummy data to each register individually.
Power cycling the AD5100 will also revert all registers back to their
programmed defaults.
Controlling the AD5100
There are two ways to control the AD5100. Users can apply the
AD5100 evaluation software for one time programming the
devices in the factory without ever reprogramming the parts in
the fields. They can also design or make use of the on-board I
2
C
controllers for programming the AD5100. The later is necessary
for any dynamic or field programming applications.
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