参数资料
型号: C8051F236R
厂商: Silicon Laboratories Inc
文件页数: 25/146页
文件大小: 0K
描述: IC 8051 MCU 8K FLASH 48TQFP
标准包装: 1
系列: C8051F2xx
核心处理器: 8051
芯体尺寸: 8-位
速度: 25MHz
连通性: SPI,UART/USART
外围设备: 欠压检测/复位,POR,WDT
输入/输出数: 32
程序存储器容量: 8KB(8K x 8)
程序存储器类型: 闪存
RAM 容量: 1.25K x 8
电压 - 电源 (Vcc/Vdd): 2.7 V ~ 3.6 V
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 48-TQFP
包装: 剪切带 (CT)
其它名称: 336-1013-1
C8051F2xx
120
Rev. 1.6
If T1M (CKCON.4) is logic 1, then the above equation becomes:
T1_OVERFLOWRATE = (SYSCLK) / (256 – TH1).
If T1M (CKCON.4) is logic 0, then the above equation becomes:
T1_OVERFLOWRATE = (SYSCLK/12) / (256 – TH1).
The Timer 2 overflow rate, when in Baud Rate Generator Mode and using an internal clock source, is
determined solely by the Timer 2 16-bit reload value (RCAP2H:RCAP2L). The Timer 2 clock source is
fixed at SYSCLK/2. The Timer 2 overflow rate can be calculated as follows:
T2_OVERFLOWRATE = (SYSCLK/2) / (65536 – [RCAP2H:RCAP2L]).
Timer 2 can be selected as the baud rate generator for RX and/or TX by setting RCLK (T2CON.5) and/or
TCLK (T2CON.4), respectively. When either RCLK or TCLK is set to logic 1, Timer 2 interrupts are auto-
matically disabled and the timer is forced into Baud Rate Generator Mode with SYSCLK/2 as its clock
source. If a different timebase is required, setting the C/T2 bit (T2CON.1) to logic 1 will allow Timer 2 to be
clocked from the external input pin T2. See the Timers section for complete timer configuration details.
Figure 16.5. UART Modes 1, 2, and 3 Interconnect Diagram
OR
RS-232
C8051Fxxx
RS-232
LEVEL
XLTR
TX
RX
C8051Fxxx
RX
TX
MCU
RX
TX
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