参数资料
型号: MC68711D3CFBE2
厂商: Freescale Semiconductor
文件页数: 94/124页
文件大小: 0K
描述: IC MCU 8BIT 44-QFP
标准包装: 96
系列: HC11
核心处理器: HC11
芯体尺寸: 8-位
速度: 2MHz
连通性: SCI,SPI
外围设备: POR,WDT
输入/输出数: 26
程序存储器容量: 4KB(4K x 8)
程序存储器类型: OTP
RAM 容量: 192 x 8
电压 - 电源 (Vcc/Vdd): 4.5 V ~ 5.5 V
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 44-QFP
包装: 托盘
SERIAL COMMUNICATIONS INTERFACE
TECHNICAL DATA
7-5
7.5 SCI Error Detection
Three error conditions, SCDR overrun, received bit noise, and framing can occur dur-
ing generation of SCI system interrupts. Three bits (OR, NF, and FE) in the serial com-
munications status register (SCSR) indicate if one of these error conditions exists. The
overrun error (OR) bit is set when the next byte is ready to be transferred from the re-
ceive shift register to the SCDR and the SCDR is already full (RDRF bit is set). When
an overrun error occurs, the data that caused the overrun is lost and the data that was
already in SCDR is not disturbed. The OR is cleared when the SCSR is read (with OR
set), followed by a read of the SCDR.
The noise flag (NF) bit is set if there is noise on any of the received bits, including the
start and stop bits. The NF bit is not set until the RDRF flag is set. The NF bit is cleared
when the SCSR is read (with FE equal to one) followed by a read of the SCDR.
When no stop bit is detected in the received data character, the framing error (FE) bit
is set. FE is set at the same time as the RDRF. If the byte received causes both fram-
ing and overrun errors, the processor only recognizes the overrun error. The framing
error flag inhibits further transfer of data into the SCDR until it is cleared. The FE bit is
cleared when the SCSR is read (with FE equal to one) followed by a read of the SCDR.
7.6 SCI Registers
There are five addressable registers in the SCI.
7.6.1 Serial Communications Data Register (SCDR)
SCDR is a parallel register that performs two functions. It is the receive data register
when it is read, and the transmit data register when it is written. Reads access the re-
ceive data buffer and writes access the transmit data buffer. Receive and transmit are
double buffered.
*U = Unaffected
7.6.2 Serial Communications Control Register 1 (SCCR1)
The SCCR1 register provides the control bits that determine word length and select
the method used for the wake-up feature.
R8 — Receive Data Bit 8
If M bit is set, R8 stores the ninth bit in the receive data character.
SCDR — SCI Data Register
$002F
Bit 7
654321
Bit 0
R7/T7
R6/T6
R5/T5
R4/T4
R3/T3
R2/T2
R1/T1
R0/T0
RESET:
U*
UUUUUUU
SCCR1 — SCI Control Register 1
$002C
Bit 7
654321
Bit 0
R8
T8
0
M
WAKE
0
RESET:
U
000000
F
re
e
sc
a
le
S
e
m
ic
o
n
d
u
c
to
r,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
c
..
.
相关PDF资料
PDF描述
VE-B11-CU-F4 CONVERTER MOD DC/DC 12V 200W
MC68711E20CFNE3 IC MCU 8BIT 52-PLCC
HCE103MBCDJ0KR CAP CER 10000PF 3KV 20% RADIAL
MC68711E20CFUE2 IC MCU 8BIT 64-QFP
HCE103MBCDF0KR CAP CER 10000PF 3KV 20% RADIAL
相关代理商/技术参数
参数描述
MC68711E20CFNE2 功能描述:8位微控制器 -MCU 8B 20K EPROM 768RAM RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
MC68711E20CFNE2 制造商:Freescale Semiconductor 功能描述:8-Bit Microcontroller IC
MC68711E20CFNE3 功能描述:8位微控制器 -MCU 8B 20K EPROM 768RAM RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
MC68711E20CFNE4 功能描述:8位微控制器 -MCU 8B 20K EPROM 768RAM RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
MC68711E20CFUE2 功能描述:IC MCU 8BIT 64-QFP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器, 系列:HC11 标准包装:1 系列:AVR® ATmega 核心处理器:AVR 芯体尺寸:8-位 速度:16MHz 连通性:I²C,SPI,UART/USART 外围设备:欠压检测/复位,POR,PWM,WDT 输入/输出数:32 程序存储器容量:32KB(16K x 16) 程序存储器类型:闪存 EEPROM 大小:1K x 8 RAM 容量:2K x 8 电压 - 电源 (Vcc/Vdd):2.7 V ~ 5.5 V 数据转换器:A/D 8x10b 振荡器型:内部 工作温度:-40°C ~ 125°C 封装/外壳:44-TQFP 包装:剪切带 (CT) 其它名称:ATMEGA324P-B15AZCT