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參數(shù)資料
| 型號： | M38859M5-XXXHP |
| 廠商： | Renesas Technology Corp. |
| 英文描述： | SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| 中文描述： | 單芯片8位CMOS微機 |
| 文件頁數(shù)： | 33/103頁 |
| 文件大?。?/td> | 1580K |
| 代理商： | M38859M5-XXXHP |
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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
of the serial I/O control register to
“
0
”
.
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(X
IN
)
1/4
OE
PE FE
1/16
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)
Serial I/O status register
Transmit interrupt request (TI)
ST detector
SP detector
UART control register
Address 001B
16
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
P4
6
/S
CLK
P4
4
/R
X
D
P4
5
/T
X
D
(f(X
CIN
) in low-speed mode)
Address
0018
16
Address
001A
16
Address 0019
16
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| M38859M6-XXXHP | SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M38859M7-XXXHP | SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M38859M8-XXXHP | SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M38859M9-XXXHP | SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M38859MA-XXXHP | SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M38859M6-XXXHP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M38859M7-XXXHP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M38859M8-XXXHP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M38859M9-XXXHP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M38859MA-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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