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EVAL-ADE7569F16EB Datasheet(PDF) 97 Page - Analog Devices

No. de pieza EVAL-ADE7569F16EB
Descripción Electrónicos  Single-Phase Energy Measurement IC with 8052 MCU, RTC, and LCD Driver
PDF  136 Pages
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Fabricante Electrónico  AD [Analog Devices]
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EVAL-ADE7569F16EB Datasheet(HTML) 97 Page - Analog Devices

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Preliminary Technical Data
ADE7566/ADE7569
Rev. PrA | Page 97 of 136
Table 94. Flash Read Protection SFR (PROTR, 0xBF)
Bit No.
Mnemonic
Default
Description
7 to 0
PROTR
0xFF
This SFR is used to write the read protection bits for Page 0 to Page 31 of the flash memory
(see the Protecting the Flash section). Clearing the bits enables the protection.
PROTR.7
PROTR.6
PROTR.5
PROTR.4
PROTR.3
PROTR.2
PROTR.1
PROTR.0
Page 28 to
Page 31
Page 24 to
Page 27
Page 20 to
Page 23
Page 16 to
Page 19
Page 12 to
Page 15
Page 8 to
Page 11
Page 4 to
Page 7
Page 0 to
Page 3
Table 95. Flash Low Byte Address SFR (EADRL, 0xC6)
Bit No.
Mnemonic
Default
Description
7 to 0
EADRL
0
Flash Pointer Low Byte Address. This SFR is also used to write the write/erase protection bits for Page 16 to
Page 23 of the flash memory (see the Protecting the Flash section). Clearing the bits enables the
protection.
EADRL.7
EADRL.6
EADRL.5
EADRL.4
EADRL.3
EADRL.2
EADRL.1
EADRL.0
Page 23
Page 22
Page 21
Page 20
Page 19
Page 18
Page 17
Page 16
Table 96. Flash High Byte Address SFR (EADRH, 0xC7)
Bit No.
Mnemonic
Default
Description
7 to 0
EADRH
0
Flash Pointer High Byte Address. This SFR is also used to write the write/erase protection bits for Page 24 to
Page 31 of the flash memory (see the Protecting the Flash section). Clearing the bits enables the
protection.
EADRH.7
EADRH.6
EADRH.5
EADRH.4
EADRH.3
EADRH.2
EADRH.1
EADRH.0
Page 31
Page 30
Page 29
Page 28
Page 27
Page 26
Page 25
Page 24
Flash Functions
Sample 8051 code is provided in this section to demonstrate
how to use the flash functions. For these examples, the byte of
flash memory 0x3C00 is accessed.
Write Byte
Write 0xF3 into flash memory byte 0x3C00.
MOV EDATA, #F3h
; Data to be written
MOV EADRH, #3Ch
; Setup byte address
MOV EADRL, #00h
MOV FLSHKY, #3Bh
; Write Flash security
key.
MOV ECON, #01H
; Write Byte
Erase Page
Erase the page containing flash memory byte 0x3C00.
MOV EADRH, #3Ch
; Select page through
byte address
MOV EADRL, #00h
MOV FLSHKY, #3Bh
; Write Flash security
key.
MOV ECON, #02H
; Erase Page
Erase All
Erase all of the 16 kB flash memory.
MOV FLSHKY, #3Bh
; Write Flash security
key.
MOV ECON, #03H
; Erase All
Read Byte
Read flash memory byte 0x3C00.
MOV EADRH, #3Ch
; Setup byte address
MOV EADRL, #00h
MOV FLSHKY, #3Bh
; Write Flash security
key.
MOV ECON, #04H
; Read Byte
; Data is ready in EDATA register
Erase Page and Write Byte
Erase the page containing flash memory byte 0x3C00 and then
write 0xF3 to that address. Note that the other 511 bytes in this
page are erased.
MOV EDATA, #F3h
; Data to be written
MOV EADRH, #3Ch
; Setup byte address
MOV EADRL, #00h
MOV FLSHKY, #3Bh
; Write Flash security
key.
MOV ECON, #05H
; Erase page and then
write byte



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