參數資料
型號： M37542F4GP
元件分類： 微控制器/微處理器
英文描述： 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP32
封裝： 7 X 7 MM, 0.80 MM PITCH, PLASTIC, LQFP-32
文件頁數： 69/124頁
文件大小： 1238K
代理商： M37542F4GP
7542 Group
Rev.3.03
Jul 11, 2008
Page 47 of 117
REJ03B0006-0303
Fig. 55 Block diagram of clock synchronous serial I/O1
Fig. 56 Operation of clock synchronous serial I/O1 function
Serial Interface
The 7542 Group has Serial I/O1 and Serial I/O2. Except that Serial
I/O1 has the bus collision detection function and the TXD2 output
structure for Serial I/O2 is CMOS only, they have the same function.
●Serial I/O1
Serial I/O1 can be used as either clock synchronous or asynchro-
nous (UART) serial I/O. A dedicated timer is also provided for
baud rate generation.
(1) Clock Synchronous Serial I/O1 Mode
Clock synchronous serial I/O1 mode can be selected by setting
the serial I/O1 mode selection bit of the serial I/O1 control register
(bit 6) to “1”.
For clock synchronous serial I/O1, the transmitter and the receiver
must use the same clock. If an internal clock is used, transfer is
started by a write signal to the TB/RB.
1/4
F/F
P12/SCLK1
Serial I/O1 status register
Serial I/O1 control register
P13/SRDY1
P10/RXD1/CAP0
P11/TXD1
XIN
Receive buffer register 1
Address 001816
Receive shift register 1
Receive buffer full flag (RBF)
Receive interrupt request (RI)
Clock control circuit
Shift clock
Serial I/O1 synchronous
clock selection bit
Frequency division ratio 1/(n+1)
Baud rate generator 1
Address 001C16
BRG count source selection bit
Clock control circuit
Falling-edge detector
Transmit buffer register 1
Data bus
Address 001816
Shift clock
Transmit shift completion flag (TSC)
Transmit buffer empty flag (TBE)
Transmit interrupt request (TI)
Transmit interrupt source selection bit
Address 001916
Data bus
Address 001A16
Transmit shift register 1
D7
D0
D1
D2
D3
D4
D5
D6
D0
D1
D2
D3
D4
D5
D6
RBF = 1
TSC = 1
TBE = 0
TBE = 1
TSC = 0
Transfer shift clock
(1/2 to 1/2048 of the internal
clock, or an external clock)
Serial output TxD1
Serial input RxD1
Write pulse to receive/transmit
buffer register 1 (address 001816)
Overrun error (OE)
detection
Notes 1: As the transmit interrupt (TI), which can be selected, either when the transmit buffer has emptied (TBE=1) or after
the transmit shift operation has ended (TSC=1), by setting the transmit interrupt source selection bit (TIC) of the
serial I/O1 control register.
2: If data is written to the transmit buffer register when TSC=0, the transmit clock is generated continuously and serial
data is output continuously from the TxD1 pin.
3: The receive interrupt (RI) is set when the receive buffer full flag (RBF) becomes “1” .
Receive enable signal SRDY1
相關PDF資料
PDF描述
M37542F4FP 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDSO36
M37542M4-XXXHP 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PQCC36
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相關代理商/技術參數
參數描述
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M37542F8FP#W4 功能描述:IC 740 MCU FLASH 32K 36-SSOP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:740/38000 標準包裝:250 系列:80C 核心處理器:8051 芯體尺寸:8-位 速度:16MHz 連通性:EBI/EMI，I²C，UART/USART 外圍設備:POR，PWM，WDT 輸入/輸出數:40 程序存儲器容量:- 程序存儲器類型:ROMless EEPROM 大小:- RAM 容量:256 x 8 電壓 - 電源 (Vcc/Vdd):4.5 V ~ 5.5 V 數據轉換器:A/D 8x10b 振蕩器型:內部 工作溫度:-40°C ~ 85°C 封裝/外殼:68-LCC（J 形引線） 包裝:帶卷 (TR)
M37542F8GP 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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