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ADP1050ACPZ-R7 数据表(PDF) 44 Page - Analog Devices

部件名 ADP1050ACPZ-R7
功能描述  Versatile digital voltage mode controller
PDF  93 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

ADP1050ACPZ-R7 数据表(HTML) 44 Page - Analog Devices

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Data Sheet
ADP1050
READ OPERATION (BYTE READ AND BLOCK READ)
Read from Main Block, Page 0 and Page 1
Page 0 and Page 1 of the main block are reserved for storing the
default settings and the user settings, respectively, and are intended
to prevent third party access to this data. To read from Page 0 or
Page 1, the user must first unlock the EEPROM (see the Unlock
the EEPROM section). After the EEPROM is unlocked, Page 0 and
Page 1 are readable, using the EEPROM_DATA_xx commands
as described in the Read from Main Block, Page 2 to Page 15
section. Note that when the EEPROM is locked, a read from
Page 0 and Page 1 returns invalid data.
Read from Main Block, Page 2 to Page 15
Data in Page 2 to Page 15 of the main block is always readable,
even with the EEPROM locked. The data in the EEPROM main
block can be read one byte at a time or multiple bytes in series,
using the EEPROM_DATA_xx commands (Register 0xB0 to
Register 0xBF).
Before executing this command, the user must program the
number of bytes to read, using the EEPROM_NUM_RD_BYTES
command (Register 0xD2). Also, the user can program the offset
from the page boundary where the first read byte is returned,
using the EEPROM_ADDR_OFFSET command (Register 0xD3).
In the following example, three bytes from Page 4 are read from
the EEPROM, starting from the sixth byte of that page.
1. Set number of return bytes = 3.
A
S
P
A
A
0x03
0xD2
W
7-BIT SLAVE
ADDRESS
MASTER TO SLAVE
SLAVE TO MASTER
Figure 47. Set Number of Return Bytes = 3
2. Set address offset = 5.
A
S
P
A
A
0x00
0x05
0xD3
W
7-BIT SLAVE
ADDRESS
A
MASTER TO SLAVE
SLAVE TO MASTER
Figure 48. Set Address Offset = 5
3. Read three bytes from Page 4.
R
S
A
A
A
Sr
0xB4
W
7-BIT SLAVE
ADDRESS
7-BIT SLAVE
ADDRESS
P
A
...
BYTE COUNT =
0x03
DATA BYTE
1
A
A
DATA BYTE
3
MASTER TO SLAVE
SLAVE TO MASTER
Figure 49. Read Three Bytes from Page 4
Note that the block read command can read a maximum of
256 bytes for any single transaction.
WRITE OPERATION (BYTE WRITE AND BLOCK
WRITE)
The user cannot write directly to the information block; this
block is used by the ADP1050 to store the first flag information
(see the First Flag ID Recording section).
Write to Main Block, Page 0 and Page 1
Page 0 and Page 1 of the main block are reserved for storing the
default settings and the user settings, respectively. The user cannot
perform a direct write operation to Page 0 or Page 1 using the
EEPROM_DATA_xx commands. If the user writes to Page 0,
Page 1 returns a no acknowledge. To program the register contents
of Page 1 of the main block, it is recommended that the STORE_
USER_ALL command be used (Register 0x15). See the Save
Register Settings to the User Settings section.
Write to Main Block, Page 2 to Page 15
Before performing a write to Page 2 through Page 15 of the
main block, the user must first unlock the EEPROM (see the
Unlock the EEPROM section).
Data in Page 2 to Page 15 of the EEPROM main block can be
programmed (written to) one byte at a time or multiple bytes in
series, using the EEPROM_DATA_xx commands (Register 0xB0
to Register 0xBF). Before executing this command, the user can
program the offset from the page boundary where the first byte
is written, using the EEPROM_ADDR_OFFSET command
(Register 0xD3).
If the targeted page has not yet been erased, the user can erase
the page, as described in the EEPROM Password section.
In the following example, four bytes are written to Page 9,
starting from the 257th byte of that page.
1. Set address offset = 256.
A
S
P
A
A
0x01
0x00
0xD3
W
7-BIT SLAVE
ADDRESS
A
MASTER TO SLAVE
SLAVE TO MASTER
Figure 50. Set Address Offset = 256
2. Write four bytes to Page 9.
A
S
A
A
BYTE COUNT = 4
0xB9
W
7-BIT SLAVE
ADDRESS
MASTER TO SLAVE
SLAVE TO MASTER
P
A
A
...
DATA BYTE 1
DATA BYTE 4
Figure 51. Write Four Bytes to Page 9
Note that the block write command can write a maximum of
256 bytes for any single transaction.
Rev. A | Page 43 of 92



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