參數(shù)資料
型號: MB89951PFM
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 5 MHz, MICROCONTROLLER, PQFP64
封裝: 0.65 MM PITCH, QFP-64
文件頁數(shù): 59/110頁
文件大?。?/td> 619K
代理商: MB89951PFM
HARDWARE CONFIGURATION
2– 37
2.2.4 UART
Full-duplex double buffers
CLK synchronous and asynchronous data transfer
8 baud rates (for internal clock)
The baud rate can also be freely selected by external clock input or input
from the internal timer.
Variable data length
NRZ transfer format
Two data and clock pins can be switched for use.
The data and clock input/output polarities can be inverted.
(1) Block diagram
(a) Baud rate generator and serial clock generator
* At switching between port output and serial clock output, the SCKE bit
of the UART is valid when the RSEL bit is 0; the SCKE bit of the serial
I/O is valid when the RSEL bit is 1.
Peripherals
P45/SCK
CPU clock
1/4
1/6
1/13
1/65
PDS1, 0
PWM timer output
Serial clock
1/2n
1/4
1/2
1/8
RC2
to
RC0
CS1, 0
CR
SMDE
UART serial clock
RSEL
SCKE*
Serial I/O clock
P45/SCK
1/2
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