參數(shù)資料
型號： R5F212BASNFA
元件分類： 微控制器/微處理器
英文描述： 16-BIT, FLASH, 20 MHz, RISC MICROCONTROLLER, PQFP48
封裝： 14 X 14 MM, 0.80 MM PITCH, PLASTIC, LQFP-48
文件頁數(shù)： 25/138頁
文件大?。?/td> 492K
代理商： R5F212BASNFA
208
4317K–AVR–03/2013
AT90PWM2/3/2B/3B
18.10.5
USART Baud Rate Registers – UBRRL and UBRRH
Bit 15:12 – Reserved Bits
These bits are reserved for future use. For compatibility with future devices, these bit must be
written to zero when UBRRH is written.
Bit 11:0 – UBRR11:0: USART Baud Rate Register
This is a 12-bit register which contains the USART baud rate. The UBRRH contains the four
most significant bits, and the UBRRL contains the eight least significant bits of the USART baud
rate. Ongoing transmissions by the Transmitter and Receiver will be corrupted if the baud rate is
changed. Writing UBRRL will trigger an immediate update of the baud rate prescaler.
18.11 Examples of Baud Rate Setting
For standard crystal, resonator and external oscillator frequencies, the most commonly used
baud rates for asynchronous operation can be generated by using the UBRR settings in Table
18-9 up to Table 18-12. UBRR values which yield an actual baud rate differing less than 0.5%
from the target baud rate, are bold in the table. Higher error ratings are acceptable, but the
Receiver will have less noise resistance when the error ratings are high, especially for large
serial frames (see “Asynchronous Operational Range” on page 201). The error values are calcu-
lated using the following equation:
Table 18-8.
UCPOL Bit Settings
UCPOL
Transmitted Data Changed
(Output of TxDn Pin)
Received Data Sampled
(Input on RxD Pin)
0
Rising XCK Edge
Falling XCK Edge
1
Falling XCK Edge
Rising XCK Edge
Bit
15
14
13121110
9
8
––––
UBRR[11:8]
UBRRH
UBRR[7:0]
UBRRL
76543210
Read/Write
RRRR
R/W
Initial Value
00000000
Error[%]
1
BaudRate
Closest Match
BaudRate
--------------------------------------------------------
–
100%
=
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
R5F212BASNFA#U0 制造商:Renesas Electronics Corporation 功能描述:IC MCU 16BIT 96KB FLASH 64LQFP 制造商:Renesas Electronics Corporation 功能描述:R8C Series 16 bit 7 kB RAM 96 kB Flash Single Chip Microcontroller SMT -LQFP-64
R5F212BASNFA#V0 功能描述:IC MCU 16/32BIT 96KB FLSH 64LQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:R8C/2x/2B 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(shè)備:POR，PWM，WDT 輸入/輸出數(shù):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(shù)據(jù)轉(zhuǎn)換器:A/D 8x10b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 85°C 封裝/外殼:68-LCC（J 形引線） 包裝:帶卷 (TR)
R5F212BASNFP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:RENESAS MCU
R5F212BASNFP#U0 制造商:Renesas Electronics Corporation 功能描述:MCU 16-Bit R8C CISC 96KB Flash 2.5V/3.3V/5V 64-Pin LQFP 制造商:Renesas Electronics Corporation 功能描述:MCU 16BIT R8C CISC 96KB FLASH 2.5V/3.3V/5V 64LQFP - Trays 制造商:Renesas Electronics Corporation 功能描述:MCU R8C/2B 制造商:Renesas Electronics 功能描述:MCU 16-Bit R8C CISC 96KB Flash 2.5V/3.3V/5V 64-Pin LQFP 制造商:Renesas 功能描述:MCU 16-Bit R8C CISC 96KB Flash 2.5V/3.3V/5V 64-Pin LQFP
R5F212BASNFP#V0 功能描述:IC R8C/2B MCU FLASH 64LQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:R8C/2x/2B 標準包裝:250 系列:56F8xxx 核心處理器:56800E 芯體尺寸:16-位 速度:60MHz 連通性:CAN，SCI，SPI 外圍設(shè)備:POR，PWM，溫度傳感器，WDT 輸入/輸出數(shù):21 程序存儲器容量:40KB（20K x 16） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:6K x 16 電壓 - 電源 (Vcc/Vdd):2.25 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 6x12b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 125°C 封裝/外殼:48-LQFP 包裝:托盤 配用:MC56F8323EVME-ND - BOARD EVALUATION MC56F8323
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