参数资料
型号: COP8CDR9LVA8
厂商: National Semiconductor
文件页数: 72/111页
文件大小: 0K
描述: IC MCU CMOS 8BIT 68-PLCC
标准包装: 18
系列: COP8™ 8C
核心处理器: COP8
芯体尺寸: 8-位
速度: 20MHz
连通性: Microwire/Plus(SPI),UART/USART
外围设备: POR,PWM,WDT
输入/输出数: 59
程序存储器容量: 32KB(32K x 8)
程序存储器类型: 闪存
RAM 容量: 1K x 8
电压 - 电源 (Vcc/Vdd): 2.7 V ~ 5.5 V
数据转换器: A/D 16x10b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 68-LCC(J 形引线)
包装: 管件
其它名称: *COP8CDR9LVA8
SNOS535I – OCTOBER 2000 – REVISED MARCH 2013
5.13.5 FRAMING FORMATS
The USART supports several serial framing formats (Figure 5-17). The format is selected using control
bits in the ENU, ENUR and ENUI registers.
The first format (1, 1a, 1b, 1c) for data transmission (CHL0 = 1, CHL1 = 0) consists of Start bit, seven
Data bits (excluding parity) and one or two Stop bits. In applications using parity, the parity bit is
generated and verified by hardware.
The second format (CHL0 = 0, CHL1 = 0) consists of one Start bit, eight Data bits (excluding parity) and
7/8, one or two Stop bits. Parity bit is generated and verified by hardware.
The third format for transmission (CHL0 = 0, CHL1 = 1) consists of one Start bit, nine Data bits and one or
two Stop bits. This format also supports the USART “ATTENTION” feature. When operating in this format,
all eight bits of TBUF and RBUF are used for data. The ninth data bit is transmitted and received using
two bits in the ENU and ENUR registers, called XBIT9 and RBIT9. RBIT9 is a read only bit. Parity is not
generated or verified in this mode.
The parity is enabled/disabled by PEN bit located in the ENU register. Parity is selected for 7- and 8-bit
modes only. If parity is enabled (PEN = 1), the parity selection is then performed by PSEL0 and PSEL1
bits located in the ENU register.
Note that the XBIT9/PSEL0 bit located in the ENU register serves two mutually exclusive functions. This
bit programs the ninth bit for transmission when the USART is operating with nine data bits per frame.
There is no parity selection in this framing format. For other framing formats XBIT9 is not needed and the
bit is PSEL0 used in conjunction with PSEL1 to select parity.
The frame formats for the receiver differ from the transmitter in the number of Stop bits required. The
receiver only requires one Stop bit in a frame, regardless of the setting of the Stop bit selection bits in the
control register. Note that an implicit assumption is made for full duplex USART operation that the framing
formats are the same for the transmitter and receiver.
Copyright 2000–2013, Texas Instruments Incorporated
Functional Description
63
Product Folder Links: COP8CBR9 COP8CCR9 COP8CDR9
相关PDF资料
PDF描述
MC68HC705JJ7CDW IC MCU 8BIT 20-SOIC
C8051F583-IQ IC 8051 MCU 128K FLASH 32-QFP
67068-0000 CONN USB RT ANG RECPT TYPE B BLK
P89LPC952FBD,157 IC 80C51 MCU FLASH 8K 44-LQFD
LPC11C22FBD48/301, IC MCU 32BIT 16KB FLASH 48LQFP
相关代理商/技术参数
参数描述
COP8CFE9 制造商:NSC 制造商全称:National Semiconductor 功能描述:8-Bit CMOS Flash Microcontroller with 8k Memory, Virtual EEPROM, and 10-Bit A/D
COP8CFE9HLQ9 功能描述:IC MCU FLASH 8BIT 8K A/D 44LLP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器, 系列:COP8™ 8C 标准包装:250 系列:56F8xxx 核心处理器:56800E 芯体尺寸:16-位 速度:60MHz 连通性:CAN,SCI,SPI 外围设备:POR,PWM,温度传感器,WDT 输入/输出数:21 程序存储器容量:40KB(20K x 16) 程序存储器类型:闪存 EEPROM 大小:- RAM 容量:6K x 16 电压 - 电源 (Vcc/Vdd):2.25 V ~ 3.6 V 数据转换器:A/D 6x12b 振荡器型:内部 工作温度:-40°C ~ 125°C 封装/外壳:48-LQFP 包装:托盘 配用:MC56F8323EVME-ND - BOARD EVALUATION MC56F8323
COP8CFE9HVA9/NOPB 功能描述:IC MCU EEPROM 8BIT 8K 44-PLCC RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器, 系列:COP8™ 8C 标准包装:250 系列:56F8xxx 核心处理器:56800E 芯体尺寸:16-位 速度:60MHz 连通性:CAN,SCI,SPI 外围设备:POR,PWM,温度传感器,WDT 输入/输出数:21 程序存储器容量:40KB(20K x 16) 程序存储器类型:闪存 EEPROM 大小:- RAM 容量:6K x 16 电压 - 电源 (Vcc/Vdd):2.25 V ~ 3.6 V 数据转换器:A/D 6x12b 振荡器型:内部 工作温度:-40°C ~ 125°C 封装/外壳:48-LQFP 包装:托盘 配用:MC56F8323EVME-ND - BOARD EVALUATION MC56F8323
COP8CFE9IMT9/NOPB 功能描述:IC MCU EEPROM 8BIT 8K 48-TSSOP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器, 系列:COP8™ 8C 标准包装:250 系列:56F8xxx 核心处理器:56800E 芯体尺寸:16-位 速度:60MHz 连通性:CAN,SCI,SPI 外围设备:POR,PWM,温度传感器,WDT 输入/输出数:21 程序存储器容量:40KB(20K x 16) 程序存储器类型:闪存 EEPROM 大小:- RAM 容量:6K x 16 电压 - 电源 (Vcc/Vdd):2.25 V ~ 3.6 V 数据转换器:A/D 6x12b 振荡器型:内部 工作温度:-40°C ~ 125°C 封装/外壳:48-LQFP 包装:托盘 配用:MC56F8323EVME-ND - BOARD EVALUATION MC56F8323
COP8CJ20 WAF 制造商:Texas Instruments 功能描述: