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參數資料
型號: MC68HC705BD3
廠商: Motorola, Inc.
英文描述: 8-Bit Microcontroller Units (MCU).(8位微控制器)
中文描述: 8位微控制器單元(MCU)。(8位微控制器)
文件頁數: 55/112頁
文件大小: 676K
代理商: MC68HC705BD3
MC68HC05BD3
MOTOROLA
7-9
M-BUS SERIAL INTERFACE
7
SRW - Slave R/W Select
1 (set)
Read from slave, from calling master
0 (clear) –
Write to slave from calling master.
When MAAS is set, the R/W command bit of the calling address sent from the master is latched
into this SRW bit. By checking this bit, the CPU can then select slave transmit/receive mode by
configuring MTX bit of the M-Bus Control register.
MIF - M-Bus Interrupt
1 (set)
An M-Bus interrupt has occurred.
0 (clear) –
An M-Bus interrupt has not occurred.
When this bit is set, an interrupt is generated to the CPU if MIEN is set. This bit is set when one
of the following events occurs:
1) Completion of one byte of data transfer. It is set at the falling edge of the 9th
clock - MCF set.
2) A match of the calling address with its own specific address in slave mode -
MAAS set.
3) A loss of bus arbitration - MAL set.
This bit must be cleared by software in the interrupt routine.
RXAK - Receive Acknowledge
1 (set)
No acknowledgment signal detected.
0 (clear) –
Acknowledgment signal detected after 8 bits data transmitted.
If cleared, it indicates an acknowledge signal has been received after the completion of 8 bits data
transmission on the bus. If set, no acknowledge signal has been detected at the 9th clock. This is
an active low status flag.
7.3.5
M-Bus Data I/O Register (MDR)
In master transmit mode, data written into this register is sent to the bus automatically, with the
most significant bit out first. In master receive mode, reading of this register initiates receiving of
the next byte data. In slave mode, the same function applies after it has been addressed.
Address
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
State
on reset
$001B
MD7
MD6
MD5
MD4
MD3
MD2
MD1
MD0
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TPG
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相關代理商/技術參數
參數描述
MC68HC705BD3P 制造商:Motorola 功能描述:MOTOROLA NXC4C
MC68HC705BD7P1 制造商:Rochester Electronics LLC 功能描述:- Bulk
MC68HC705C4ACP 制造商:Freescale Semiconductor 功能描述:
MC68HC705C8AB 功能描述:IC MCU 8K OTP 2.1MHZ 42-SDIP RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器, 系列:HC05 標準包裝:250 系列:56F8xxx 核心處理器:56800E 芯體尺寸:16-位 速度:60MHz 連通性:CAN,SCI,SPI 外圍設備:POR,PWM,溫度傳感器,WDT 輸入/輸出數:21 程序存儲器容量:40KB(20K x 16) 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:6K x 16 電壓 - 電源 (Vcc/Vdd):2.25 V ~ 3.6 V 數據轉換器:A/D 6x12b 振蕩器型:內部 工作溫度:-40°C ~ 125°C 封裝/外殼:48-LQFP 包裝:托盤 配用:MC56F8323EVME-ND - BOARD EVALUATION MC56F8323
MC68HC705C8ACB 制造商:Rochester Electronics LLC 功能描述:HCO5 CORE + 8K RAM + EPR - Bulk
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