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AS8267 bảng dữ liệu(PDF) 114 Page - ams AG

tên linh kiện AS8267
Giải thích chi tiết về linh kiện  Single-Phase 2-Current Energy Measurement Integrated Circuits with Microcontroller, RTC, Programmable Multi-Purpose I/Os
PDF  136 Pages
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nhà sản xuất  AMSCO [ams AG]
Trang chủ  http://www.ams.com
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AS8267 bảng dữ liệu(HTML) 114 Page - ams AG

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Data Sheet AS8267 / AS8268
Revision 1.0, 19-Jun-07
Page 114 of 136
Flow Diagram of Operational Modes
VDD[D|A] off
VDD_BAT off
VDD[D|A] off
VDD_BAT on
insert
battery
VDD[D|A] on
VDD_BAT off:
- no clock
- chip stays reset
power-up
(Vmain on)
VDD[D|A] on
VDD_BAT on
power-up
(Vmains on)
BOOTLOAD
Power-on
Reset
MCU in idle mode,
"loop program"
running
MCU:
Program execution,
Command mode
active
Finished.
Program
available
Finished.
No program
Receiving
SCT command
Evaluating SCT
command
Write to
ext.
EEPROM
Read
from ext.
EEPROM
Reset
chip
Receiving
SCT command
BOOT
LOAD
16 bit
address
8 bit
data in
(...)
16 bit
address
Back to
MCU
Back to
MCU
Back to
MCU
f4h
f3h
f0h
Program
execution
Command
mode disable
Command
mode enable
UART
handling
Interrupt
from UART
Read
from
XDATA
Write to
XDATA
f6h
f5h
16 bit
address
8 bit
data in
(...)
16 bit
address
Back to
MCU
Back to
MCU
16 bit
blocklength
16 bit
blocklength
8 bit
data out
(...)
8 bit
data out
(...)
Read
Prompt
Set
Baudrate
8 bit out:
"A"
8 bit out:
"L"
8 bit out:
"I"
8 bit out:
"V"
8 bit out:
"E"
Back to
MCU
SBaudH
SBaudL
Back to
MCU
f2h
f1h
16 bit
blocklength
16 bit
blocklength
ACK /
NACK
ACK /
NACK
Set
password
f7h/f8h
8 bytes
password
Back to
MCU
ACK /
NACK



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