参数资料
型号: PIC16C64A-20/L
厂商: Microchip Technology
文件页数: 77/126页
文件大小: 0K
描述: IC MCU OTP 2KX14 PWM 44PLCC
产品培训模块: Asynchronous Stimulus
8-bit PIC® Microcontroller Portfolio
标准包装: 27
系列: PIC® 16C
核心处理器: PIC
芯体尺寸: 8-位
速度: 20MHz
连通性: I²C,SPI
外围设备: 欠压检测/复位,POR,PWM,WDT
输入/输出数: 33
程序存储器容量: 3.5KB(2K x 14)
程序存储器类型: OTP
RAM 容量: 128 x 8
电压 - 电源 (Vcc/Vdd): 4 V ~ 6 V
振荡器型: 外部
工作温度: 0°C ~ 70°C
封装/外壳: 44-LCC(J 形引线)
包装: 管件
配用: AC164309-ND - MODULE SKT FOR PM3 44PLCC
444-1001-ND - DEMO BOARD FOR PICMICRO MCU
309-1040-ND - ADAPTER 44-PLCC ZIF TO 40-DIP
309-1039-ND - ADAPTER 44-PLCC TO 40-DIP
54
AT90S/LS4433
1042H–AVR–04/03
data is transferred from UDR to the 10(11)-bit Shift Register, bit 0 of the Shift Register is
cleared (start bit) and bit 9 or 10 is set (stop bit). If 9-bit data word is selected (the CHR9
bit in the UART Control and Status Register B, UCSRB is set), the TXB8 bit in UCSRB is
transferred to bit nine in the Transmit Shift Register.
On the baud rate clock following the transfer operation to the Shift Register, the start bit
is shifted out on the TXD pin. Then follows the data, LSB first. When the stop bit has
been shifted out, the Shift Register is loaded if any new data has been written to the
UDR during the transmission. During loading, UDRE is set. If there is no new data in the
UDR Register to send when the stop bit is shifted out, the UDRE Flag will remain set
until UDR is written again. When no new data has been written, and the stop bit has
been present on TXD for one bit length, the TX Complete Flag, TXC, in UCSRA is set.
The TXEN bit in UCSRB enables the UART Transmitter when set (one). When this bit is
cleared (zero), the PD1 pin can be used for general I/O. When TXEN is set, the UART
Transmitter will be connected to PD1, which is forced to be an output pin regardless of
the setting of the DDD1 bit in DDRD.
Data Reception
Figure 41 shows a block diagram of the UART Receiver.
Figure 41. UART Receiver
UART CONTROL
AND STAUS
REGISTER B (UCSRB)
UART CONTROL
AND STAUS
REGISTER A (UCSRA)
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