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参数资料
| 型号： | M38D59GF-XXXFP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, MROM, 6.25 MHz, MICROCONTROLLER, PQFP80 |
| 封装： | 14 X 20 MM, 0.80 MM PITCH, PLASTIC, QFP-80 |
| 文件页数： | 84/142页 |
| 文件大小： | 2004K |
| 代理商： | M38D59GF-XXXFP |
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Rev.3.04
May 20, 2008
REJ03B0158-0304
38D5 Group
[Transmit Buffer Register/Receive Buffer Register
(TB1/RB1)]
The transmit buffer register and the receive buffer register are
located at the same address. The transmit buffer is write-only and
the receive buffer is read-only. If a character bit length is 7 bits,
the MSB of data stored in the receive buffer is “0”.
[Serial I/O1 Status Register (SIO1STS)]
The read-only serial I/O1 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 set to “0” when the receive
buffer register is read.
If there is an error, it is detected at the same time that data is
transferred from the receive shift register to the receive buffer
register, and the receive buffer full flag is set. A write to the
serial I/O1 status register sets all the error flags OE, PE, FE, and
SE (bit 3 to bit 6, respectively) to “0”. Writing “0” to the serial
I/O1 enable bit SIOE (bit 7 of the serial I/O1 control register)
also sets all the status flags to “0”, including the error flags.
All bits of the serial I/O1 status register are set to “0” at reset, but
if the transmit enable bit (bit 4) of the serial I/O1 control register
has been set to “1”, the transmit shift completion flag (bit 2) and
the transmit buffer empty flag (bit 0) become “1”.
[Serial I/O1 Control Register (SIO1CON)]
The serial I/O1 control register consists of eight control bits for
the serial I/O1 function.
[UART Control Register (UARTCON)]
The UART control register consists of four control bits (bits 0 to
3) which are valid when asynchronous serial I/O is selected and
set the data format of the data transfer and one bit (bit 4) which is
always valid and sets the output structure of the P41/TXD pin.
[Baud Rate Generator (BRG)]
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.
<Notes on serial I/O1>
When setting transmit enable bit of serial I/O1 to “1”, the serial
I/O1 transmit interrupt request bit is automatically set to “1”.
When not requiring the interrupt occurrence synchronous with
the transmission enabled, take the following sequence.
(1) Set the serial I/O1 transmit interrupt enable bit to “0”
(disabled).
(2) Set the transmit enable bit to “1”.
(3) Set the serial I/O1 transmit interrupt request bit to “0” after
1 or more instructions have been executed.
(4) Set the serial I/O1 transmit interrupt enable bit to “1”
(enabled).
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相关代理商/技术参数 |
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