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參數(shù)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(shù): 54/112頁
文件大小: 676K
代理商: MC68HC705BD3
MOTOROLA
7-8
MC68HC05BD3
M-BUS SERIAL INTERFACE
7
7.3.4
M-Bus Status Register (MSR)
The MIF and MAL bits are software clearable; while the other bits are read only.
MCF - Data Transfer Complete
1 (set)
A byte transfer has been completed.
0 (clear) –
A byte is being transfer.
When MCF is set, the MIF (M-Bus interrupt) bit is also set. An M-Bus interrupt is generated if the
MIEN bit is set.
MAAS - Addressed as Slave
1 (set)
Currently addressed as a slave.
0 (clear) –
Not currently addressed.
This MAAS bit is set when its own specific address (M-Bus Address register) matches the calling
address. When MAAS is set, the MIF (M-Bus interrupt) bit is also set. An interrupt is generated if
the MIEN bit is set. Then CPU needs to check the SRW bit and set its MTX bit accordingly. Writing
to the M-Bus Control register clears this bit.
MBB - Bus Busy
1 (set)
M-Bus busy.
0 (clear) –
M-Bus idle.
This bit indicates the status of the bus. When a START signal is detected, MBB is set. When a
STOP signal is detected, it is cleared.
MAL - Arbitration Lost
1 (set)
Lost arbitration in master mode.
0 (clear) –
No arbitration lost.
This arbitration lost flag is set when the M-Bus master loses arbitration during a master
transmission mode. When MAL is set, the MIF (M-Bus interrupt) bit is also set. This bit must be
cleared by software.
Address
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
State
on reset
$001A
MCF
MAAS
MBB
MAL
SRW
MIF
RXAK
1000 0001
TPG
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)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(biāo)準(zhǔn)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(shè)備:POR,PWM,溫度傳感器,WDT 輸入/輸出數(shù):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(shù)據(jù)轉(zhuǎn)換器:A/D 6x12b 振蕩器型:內(nèi)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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