參數(shù)資料
型號(hào)： M38859FFHP
元件分類： 微控制器/微處理器
英文描述： 8-BIT, FLASH, 4 MHz, MICROCONTROLLER, PQFP80
封裝： 12 X 12 MM, 0.50 MM PITCH, PLASTIC, LQFP-80
文件頁(yè)數(shù)： 31/103頁(yè)
文件大小： 1580K
代理商： M38859FFHP
32
3885 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
(2) Asynchronous Serial I/O (UART) Mode
Universal asynchronous transmitter receiver (UART) serial I/O
mode can be selected by clearing the serial I/O mode selection bit
Eight serial data transfer formats can be selected, and the transfer
formats used by a transmitter and receiver must be identical.
Both the transmit and receive shift registers have a buffer, but the
two buffers assigned the same address. Since the shift register
cannot be written to or read from directly, transmit data is written
to the transmit buffer register, and receive data is read from the re-
ceive buffer register.
The transmit buffer register can also hold the next data to be
transmitted, and the receive buffer register can hold a character
while the next character is being received.
Fig. 28 Block diagram of UART mode
f(XIN)
1/4
OE
PE FE
1/16
Data bus
Receive buffer register
Receive shift register
Receive buffer full flag (RBF)
Receive interrupt request (RI)
Baud rate generator
Frequency division ratio 1/(n+1)
ST/SP/PA generator
Transmit buffer register
Data bus
Transmit shift register
Transmit shift completion flag (TSC)
Transmit buffer empty flag (TBE)
Transmit interrupt request (TI)
ST detector
SP detector
UART control register
Character length selection bit
BRG count source selection bit
Transmit interrupt source selection bit
Serial I/O synchronous clock selection bit
Clock control circuit
Character length selection bit
7 bits
8 bits
Serial I/O control register
P46/SCLK
Serial I/O status register
P44/RXD
P45/TXD
(f(XCIN) in low-speed mode)
Address
001816
Address
001A16
Address 001B16
Address 001916
相關(guān)PDF資料
PDF描述
M38857M8-XXXHP 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PQFP80
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M38859FF-HP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
M38859M1-XXXHP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
M38859M2-XXXHP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
M38859M3-XXXHP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
M38859M4-XXXHP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
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