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参数资料
| 型号： | M38C80E4-XXXFP |
| 厂商： | Mitsubishi Electric Corporation |
| 英文描述： | SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| 中文描述： | 单芯片8位CMOS微机 |
| 文件页数： | 26/51页 |
| 文件大小： | 874K |
| 代理商： | M38C80E4-XXXFP |
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26
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
38C8 Group
PRELIMINARY
Notice: This is not a final specification.
change.
Some parametric limits are subject to
[Transmit Buffer/Receive Buffer Register
(TB/RB)] 0018
16
The transmit buffer register and the receive buffer register are lo-
cated at the same address. The transmit buffer register is write-only
and the receive buffer register is read-only. If a character bit length is
7 bits, the MSB of data stored in the receive buffer register is
“
0
”
.
[Serial I/O Status Register (SIOSTS)] 0019
16
The read-only serial I/O status register consists of seven flags (bits 0
to 6) which indicate the operating status of the serial I/O function and
various errors.
Three of the flags (bits 4 to 6) are valid only in UART mode.
The receive buffer full flag (bit 1) is cleared to
“
0
”
when the receive
buffer is read.
If there is an error, it is detected at the same time that data is trans-
ferred from the receive shift register to the receive buffer register,
and the receive buffer full flag is set. A write to the serial I/O status
register clears all the error flags OE, PE, FE, and SE. Writing
“
0
”
to
the serial I/O enable bit (SIOE) also clears all the status flags, includ-
ing the error flags.
All bits of the serial I/O status register are initialized to
“
0
”
at reset,
but if the transmit enable bit (bit 4) of the serial I/O control register
has been set to
“
1
”
, the transmit shift register shift completion flag
(bit 2) and the transmit buffer empty flag (bit 0) become
“
1
”
.
[Serial I/O Control Register (SIOCON)] 001A
16
The serial I/O control register contains eight control bits for the serial
I/O1 function.
[UART Control Register (UARTCON) ]001B
16
This is a 5 bit register containing four control bits, which are valid
when UART is selected and set the data format of an data receiver/
transfer, and one control bit, which is always valid and sets the out-
put structure of the P4
5
/T
X
D pin.
[Baud Rate Generator(BRG)] 0016
16
The baud rate generator determines the baud rate for serial transfer.
The baud rate generator divides the frequency of the count source
by 1/(n + 1), where n is the value written to the baud rate generator.
I
Notes on serial I/O
When setting the transmit enable bit to
“
1
”
, the serial I/O transmit
interrupt request bit is automatically set to
“
1
”
. When not requiring
the interrupt occurrence synchronized with the transmission enalbed,
take the following sequence.
Set the serial I/O transmit interrupt enable bit to
“
0
”
(disabled).
Set the transmit enable bit to
“
1
”
.
Set the serial I/O transmit interrupt request bit to
“
0
”
after 1 or more
instructions have been executed.
Set the serial I/O transmit interrupt enable bit to
“
1
”
(enabled).
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相关代理商/技术参数 |
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|---|---|
| M38D20F1XXXFP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M38D20F1XXXHP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M38D20F2XXXFP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M38D20F2XXXHP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M38D20F3XXXFP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
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