參數(shù)資料
型號: MC68HCP11A1CP2
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: HCMOS Single-Chip Microcontroller
中文描述: 8-BIT, 2 MHz, MICROCONTROLLER, PDIP48
封裝: DIP-48
文件頁數(shù): 54/158頁
文件大?。?/td> 776K
代理商: MC68HCP11A1CP2
MOTOROLA
5-10
SERIAL COMMUNICATIONS INTERFACE
MC68HC11A8
TECHNICAL DATA
5
5.8.4 Serial Communications Status Register (SCSR)
The serial communications status register (SCSR) provides inputs to the interrupt logic
circuits for generation of the SCI system interrupt.
TDRE — Transmit Data Register Empty
The transmit data register empty bit is set to indicate that the content of the serial com-
munications data register have been transferred to the transmit serial shift register.
This bit is cleared by reading the SCSR (with TDRE = 1) followed by a write to the
SCDR.
TC — Transmit Complete
The transmit complete bit is set at the end of a data frame, preamble, or break condi-
tion if:
1. TE = 1, TDRE = 1, and no pending data, preamble, or break is to be transmitted;
or
2. TE = 0, and the data, preamble, or break in the transmit shift register has been
transmitted.
The TC bit is a status flag which indicates that one of the above conditions have oc-
curred.
The TC bit is cleared by reading the SCSR (with TC set) followed by a write to the
SCDR.
RDRF — Receive Data Register Full
The receive data register full bit s set when the receiver serial shift register s transferred to
the SCDR. The RDRF bit is cleared when the SCSR is read (with RDRF set) followed by a
read of the SCDR.
IDLE — Idle Line Detect
The dle ine detect bit, when set, ndicates the receiver has detected an dle ine. The IDLE
bit s cleared by reading the SCSR with IDLE set followed by reading SCDR. Once the IDLE
status flag is cleared, it will not be set again until after the RxD line has been active and be-
comes idle again.
OR — Overrun Error
The overrun error bit s set when he next byte s ready o be ransferred rom he receive shift
register to the SCDR which is already full (RDRF bit is set). When an overrun error occurs,
the data which caused he overrun s ost and he data which was already n SCDR s not dis-
turbed. The OR is cleared when the SCSR is read (with OR set), followed by a read of the
SCDR.
7
6
5
4
3
2
1
0
0
0
$
1
02E
RESET
TDRE
1
TC
1
RDRF
0
IDLE
0
OR
0
NF
0
FE
0
SCSR
相關(guān)PDF資料
PDF描述
MC68HCP11A1CP3 HCMOS Single-Chip Microcontroller
MC68HCP11A1MFN2 HCMOS Single-Chip Microcontroller
MC68HCP11A1MP2 HCMOS Single-Chip Microcontroller
MC68HCP11A1VFN2 HCMOS Single-Chip Microcontroller
MC68HCP11A1VP2 HCMOS Single-Chip Microcontroller
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC68HCP11A1FN 制造商:MOTORALA 功能描述:
MC68HCP11E0CP2 制造商:Rochester Electronics LLC 功能描述:- Bulk
MC68HCP11E0FN 功能描述:MICROCONTROLLER MCU 8ADC 3MHC RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器, 系列:HC11 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
MC68HCP11E0FNE 功能描述:8位微控制器 -MCU 8B MCU 512RAM COP A/D RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
MC68HCP11E1CFNE2 功能描述:8位微控制器 -MCU 8B MCU 512 BYTES RAM RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT