M37902FCCHP PDF资料下载(108/143 页)16-BIT, FLASH, 26 MHz, MICROCONTROLLER, PQFP100

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参数资料

型号：	M37902FCCHP
元件分类：	微控制器/微处理器
英文描述：	16-BIT, FLASH, 26 MHz, MICROCONTROLLER, PQFP100
封装：	14 X 14 MM, 0.50 MM PITCH, PLASTIC, LQFP-100
文件页数：	108/143页
文件大小：	1148K
代理商：	M37902FCCHP

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M37902FCCHP, M37902FGCHP, M37902FJCHP

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

MITSUBISHI MICROCOMPUTERS

CLOCK SYNCHRONOUS SERIAL COMMUNI-

CATION

A case where communication is performed between two clock syn-

chronous serial I/O ports as shown in Figure 69 will be described.

(The transmission side will be denoted by subscript j and the receiv-

ing side will be denoted by subscript k.)

Bit 0 of the UARTj transmit/receive mode register and UARTk trans-

mit/receive mode register must be set to “1” and bits 1 and 2 must be

“0”. The length of the transmission data is fixed at 8 bits.

Bit 3 of the UARTj transmit/receive mode register of the clock send-

ing side is cleared to “0” to select the internal clock. Bit 3 of the

UARTk transmit/receive mode register of the clock receiving side is

set to “1” to select the external clock. Bits 4, 5 and 6 are ignored in

clock synchronous mode. Bit 7 must always be “0”.

The clock source is selected by bit 0 (CS0) and bit 1 (CS1) of the

clock-sending-side UARTj transmit/receive control register 0. As

shown in Figure 64, the selected clock is divided by (n+1), then by 2,

is passed through a transmission control circuit, and is output as

transmission clock CLKj. Therefore, when the selected clock is fi,

Bit Rate = fi/ {(n + 1)

× 2}

On the clock receiving side, the CS0 and CS1 bits of the UARTk

transmit/receive control register 0 are ignored because an external

clock is selected.

_______

Both of UART0 and UART1 can use CTS and RTS functions.

Bit 4 of the UARTi transmit/receive control register 0 is used to de-

_______

termine whether to use CTS or RTS signal. Bit 4 must be “0” when

_______

CTS or RTS signal is used. Bit 4 must be “1” when CTS and RTS sig-

_______

nals are not used. When CTS and RTS signals are not used, CTS/

_______

RTS pin can be used as a normal port pin.

_______ _______

When using pin CTS/RTS, :

If bit 2 of the UARTi transmit/receive control register 0 is cleared to

_______

“0”, CTS input is selected.

_______

If bit 2 is set to “1”, RTS output is selected.

_______

The case using CTS and RTS signals are explained below. As

shown in Figure 76, bits 2 and 3 of the serial I/O pin control register

can determine whether port pins P83 and P87 are used as pins TxDi

or as port pins. When bits 2 and 3 are “0”, P83 and P87 function as

pins TxDi; when bits 2 and 3 are “1”, P83 and P87 function as port

pins. Therefore, in the input-only system where pins TxDi are not

used, pins TxDi can function as port pins.

Fig. 69 Clock synchronous serial communication

UARTj transmit register

TxDj

RxDj

CLKj

CTSj

UARTj transmit buffer register

UARTj receive buffer register

UARTj receive register

UARTj Transmit/Receive mode register

UARTj Transmit/Receive control

EPTY

CS1

CS0

OER

FER

PER

CPL

SUM

UARTk transmit register

UARTk transmit buffer register

UARTk receive buffer register

UARTk receive register

UARTk Transmit/Receive mode register

UARTk Transmit/Receive control

EPTY

MSB

/LSB

OER

FER

PER

SUM

TxDk

RxDk

CLKk

RTSk

MSB

/LSB

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相关代理商/技术参数	参数描述
M37902FGCGP	制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
M37902FGCHP	制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
M37902FJCHP	制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
M37903S4CHP	制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:16-BIT CMOS MICROCOMPUTER
M37905F8CFP	制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:16-BIT CMOS MICROCOMPUTER

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