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参数资料
| 型号： | M37481M8T-XXXSP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PDIP42 |
| 封装： | 0.600 INCH, 1.78 MM PITCH, SHRINK, PLASTIC, DIP-42 |
| 文件页数： | 30/100页 |
| 文件大小： | 1457K |
| 代理商： | M37481M8T-XXXSP |
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MITSUBISHI MICROCOMPUTERS
7480/7481 GROUP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
32
PRELIMINAR
Y
Notice:
This
is not
a final
specification.
Some
parametric
limits
are
subject
to change.
Each of the transmit and receive registers has a buffer register
(the same address on memory). Since the shift register cannot be
written to or read from directly, transmit data is written to the trans-
mit buffer register and receive data is read from the receive buffer
register. These buffer registers can also hold the next data to be
transmitted and receive 2-byte receive data in succession.
(2) Asynchronous Serial I/O (UART) Mode
The UART 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 to be used by a transmitter and a receiver must be identi-
cal.
Fig. 30 Block diagram of UART serial I/O
Fig. 31 Operation of UART serial I/O function
Receive buffer register
Clock control circuit
Serial I/O control register
Baud rate generator
Serial I/O status register
1/4
Transmit shift register shift completion flag (TSC)
Transmit interrupt request (TI)
Transmit buffer empty flag (TBE)
Receive buffer full flag (RBF)
Receive interrupt request (RI)
Frequency division ratio 1/(n+1)
P14
P15
P16
Receive shift register
Transmit shift register
Transmit buffer register
TXD
SCLK
RXD
XIN
Address 00E016
Address 00E216
Address 00E016
Address 00E116
Address 00E416
7-bit
1/16
UART control register
ST/SP/PA generation
Serial I/O synchronous clock
selection bit (SCS)
OE
SP detection
8-bit
PE
FE
ST detection
Address 00E316
Receive enable bit (RE)
Transmit enable bit (TE)
Character length
selection bit (CHAS)
Character length
selection bit
(CHAS)
BRG count source
selection bit (CSS)
Data bus
Serial I/O enable bit (SIOE)
Serial I/O synchronous clock selection bit (SCS)
Transmit interrupt
source selection bit (TIC)
ST
D0
D1
SP
ST
D0
D1
SP
Transmit or receive clock
Transmit buffer register
write signal
Serial output TxD
Receive buffer register
read signal
Serial input RxD
TBE=0
TSC=0
TBE=0
TBE=1
RBF=0
RBF=1
TSC=1
1 start bit
7/8 data bit
1/0 parity bit
1/2 stop bit
ST
D0
D1
SP
ST
D1
SP
*
VGenerated at 2nd bit in 2
stop bit mode
Notes 1 : Error flag detection occurs at the same time that the RBF flag becomes “1” (at 1st stop bit during reception).
2 : The transmit interrupt (TI) can be selected to be generated when either TBE=1 or TSC=1, depending on the setting of
the transmit interrupt source selection bit of the serial I/O control register.
3 : The receive interrupt (RI) is set when the RBF flag becomes “1”.
D0
TBE=1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| M37481M8-XXXFP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:8-BIT SINGLE-CHIP MICROCOMPUTER 740 FAMILY / 7470 SERIES |
| M37481M8-XXXSP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:8-BIT SINGLE-CHIP MICROCOMPUTER 740 FAMILY / 7470 SERIES |
| M37481MT-088FP | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M37481MXT | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M37481MXT-XXXFP | 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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