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| 型号： | M38K29F8LHP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP64 |
| 封装： | 10 X 10 MM, 0.50 MM PITCH, PLASTIC, LQFP-64 |
| 文件页数： | 17/25页 |
| 文件大小： | 1451K |
| 代理商： | M38K29F8LHP |
38K2 Group
Rev.3.00
Oct 15, 2006
page 22 of 147
REJ03B0193-0300
(2) Asynchronous Serial I/O (UART) Mode
Clock asynchronous serial I/O mode (UART) can be selected by
setting 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 used by a transmitter and receiver must be identical.
The transmit and receive shift registers each have a buffer regis-
ter, but the two buffers have the same address in memory. Since
the shift register cannot be written to or read from directly, transmit
data is written to the transmit buffer, and receive data is read from
the receive buffer.
The transmit buffer can also hold the next data to be transmitted,
and the receive buffer register can hold a character while the next
character is being received.
Fig. 20 Block diagram of UART serial I/O
Fig. 21 Operation of UART serial I/O function
System clock
1/4
OE
PE FE
1/16
Data bus
Receive buffer register
Address 002616
Receive shift register
Receive buffer full flag (RBF)
Receive interrupt request (RI)
Baud rate generator
Frequency division ratio 1/(n+1)
Address 0FE216
ST/SP/PA generator
Transmit buffer register
Data bus
Transmit shift register
Address 002616
Transmit shift register shift completion flag (TSC)
Transmit buffer empty flag (TBE)
Transmit interrupt request (TI)
Address 002716
STdetector
SP detector
UART control register
Address 0FE116
Character length selection bit
Address 0FE016
BRG count source selection bit
Transmit interrupt source selection bit
Serial I/O synchronous clock selection bit
Clock control circuit
Character length selection bit
7 bits
8 bits
Serial I/O1 control register
P42/EXTC/SCLK
Serial I/O status register
P40/EXDREQ/RxD
P41/EXDACK/TxD
TSC=0
TBE=1
RBF=0
TBE=0
RBF=1
ST
D0
D1
SP
D0
D1
ST
SP
TBE=1
TSC=1
ST
D0
D1
SP
D0
D1
ST
SP
Transmit buffer write signal
Generated at 2nd bit in 2-stop-bit mode
1 start bit
7 or 8 data bits
1 or 0 parity bit
1 or 2 stop bit (s)
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 generated to occur when either the TBE or TSC flag becomes “1”, depending on the setting of the transmit interrupt
source selection bit (TIC) of the serial I/O1 control register.
3 : The receive interrupt (RI) is set when the RBF flag becomes “1”.
4 : After data is written to the transmit buffer register when TSC=1, 0.5 to 1.5 cycles of the data shift cycle is necessary until changing to TSC=0.
Notes
Serial output TXD
Serial input RXD
Receive buffer read signal
Transmit or receive clock
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相关代理商/技术参数 |
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| M38K29F8LHP#U0 | 功能描述:IC 740/38K2 MCU FLASH 64-LQFP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:740/38000 产品培训模块:CAN Basics Part-1 CAN Basics Part-2 Electromagnetic Noise Reduction Techniques Part 1 M16C Product Overview Part 1 M16C Product Overview Part 2 标准包装:1 系列:M16C™ M32C/80/87 核心处理器:M32C/80 芯体尺寸:16/32-位 速度:32MHz 连通性:EBI/EMI，I²C，IEBus，IrDA，SIO，UART/USART 外围设备:DMA，POR，PWM，WDT 输入/输出数:121 程序存储器容量:384KB（384K x 8） 程序存储器类型:闪存 EEPROM 大小:- RAM 容量:24K x 8 电压 - 电源 (Vcc/Vdd):3 V ~ 5.5 V 数据转换器:A/D 34x10b，D/A 2x8b 振荡器型:内部 工作温度:-20°C ~ 85°C 封装/外壳:144-LQFP 包装:托盘 产品目录页面:749 (CN2011-ZH PDF) 配用:R0K330879S001BE-ND - KIT DEV RSK M32C/87 |
| M38K29F8LHP#UO | 制造商:Renesas Electronics Corporation 功能描述: |
| M38K29T-ADF | 功能描述:DEV TEMPORARY TARGET BOARD FOR M RoHS:否 类别:编程器，开发系统 >> 配件 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program RoHS指令信息:IButton RoHS Compliance Plan 标准包装:1 系列:- 附件类型:USB 至 1-Wire? RJ11 适配器 适用于相关产品:1-Wire? 设备 产品目录页面:1429 (CN2011-ZH PDF) |
| M38K29T-PAC | 制造商:Renesas Electronics Corporation 功能描述:DEV SIMPLE TOOL SYSTEM PKG FOR 38000/38K - Bulk |
| M38UC-150 | 制造商:M/A-COM Technology Solutions 功能描述:MICROWAVE MIXER - Bulk |
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