- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄1905 > ATMEGA103-6AI (Atmel)IC MCU 128K 6MHZ A/D IT 64TQFP PDF資料下載
參數(shù)資料
| 型號： | ATMEGA103-6AI |
| 廠商： | Atmel |
| 文件頁數(shù)： | 100/141頁 |
| 文件大小： | 0K |
| 描述： | IC MCU 128K 6MHZ A/D IT 64TQFP |
| 產(chǎn)品培訓模塊： | megaAVR Introduction |
| 標準包裝： | 90 |
| 系列： | AVR® ATmega |
| 核心處理器： | AVR |
| 芯體尺寸： | 8-位 |
| 速度： | 6MHz |
| 連通性： | SPI，UART/USART |
| 外圍設備： | POR，PWM，WDT |
| 輸入/輸出數(shù)： | 32 |
| 程序存儲器容量： | 128KB（64K x 16） |
| 程序存儲器類型： | 閃存 |
| EEPROM 大?。?/td> | 4K x 8 |
| RAM 容量： | 4K x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 4 V ~ 5.5 V |
| 數(shù)據(jù)轉換器： | A/D 8x10b |
| 振蕩器型： | 內部 |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 64-TQFP |
| 包裝： | 托盤 |
| 配用： | ATSTK501-ND - ADAPTER KIT FOR 64PIN AVR MCU |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁當前第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁第109頁第110頁第111頁第112頁第113頁第114頁第115頁第116頁第117頁第118頁第119頁第120頁第121頁第122頁第123頁第124頁第125頁第126頁第127頁第128頁第129頁第130頁第131頁第132頁第133頁第134頁第135頁第136頁第137頁第138頁第139頁第140頁第141頁
61
ATmega103(L)
0945I–AVR–02/07
Figure 38. SPI Master-Slave Interconnection
The system is single-buffered in the transmit direction and double-buffered in the
receive direction. This means that characters to be transmitted cannot be written to the
SPI Data Register before the entire shift cycle is completed. When receiving data, how-
ever, a received byte must be read from the SPI Data Register before the next byte has
been completely shifted in. Otherwise, the first byte is lost.
When the SPI is enabled, the data direction of the MOSI, MISO, SCK and SS pins is
overridden according to the following table:
Note:
See “Alternate Functions of Port B” on page 89 for a detailed description and how to
define the direction of the user-defined SPI pins.
SS Pin Functionality
When the SPI is configured as a Master (MSTR in SPCR is set), the user can determine
the direction of the SS pin. If SS is configured as an output, the pin is a general output
pin that does not affect the SPI system. If SS is configured as an input, it must be held
high to ensure Master SPI operation. If the SS pin is driven low by peripheral circuitry
when the SPI is configured as Master with the SS pin defined as an input, the SPI sys-
tem interprets this as another Master selecting the SPI as a Slave and starts to send
data to it. To avoid bus contention, the SPI system takes the following actions:
1.
The MSTR bit in SPCR is cleared and the SPI system becomes a Slave. As a
result of the SPI becoming a Slave, the MOSI and SCK pins become inputs.
2.
The SPIF Flag in SPSR is set, and if the SPI interrupt is enabled and the I-bit in
SREG is set, the interrupt routine will be executed.
Thus, when interrupt-driven SPI transmittal is used in Master mode and there exists a
possibility that SS is driven low, the interrupt should always check that the MSTR bit is
still set. Once the MSTR bit has been cleared by a Slave Select, it must be set by the
user to re-enable SPI Master mode.
When the SPI is configured as a Slave, the SS pin is always input. When SS is held low,
the SPI is activated and MISO becomes an output if configured so by the user. All other
pins are inputs. When SS is driven high, all pins are inputs and the SPI is passive, which
means that it will not receive incoming data. Note that the SPI logic will be reset once
Table 22. SPI Pin Overrides
PIN
Direction, Master SPI
Direction, Slave SPI
MOSI
User Defined
Input
MISO
Input
User Defined
SCK
User Defined
Input
SS
User Defined
Input
MASTER
MISO
SPI
CLOCK GENERATOR
SLAVE
MISO
MOSI MOSI
SCK
SS
V
CC
MSBLSB
MSB
LSB
8-BIT SHIFT REGISTER
相關PDF資料 |
PDF描述 |
|---|---|
| ATMEGA128A-AUR | MCU AVR 128K FLASH 16MHZ 64TQFP |
| ATMEGA128L-8MJ | IC MCU AVR 128K 8MHZ LV 64-QFN |
| ATMEGA16-16MUR | MCU AVR 16KB FLASH 16MHZ 44QFN |
| ATMEGA164PA-AN | IC MCU AVR 16K FLASH 44TQFP |
| ATMEGA164PA-CUR | MCU AVR 16KB FLASH 20MHZ 49VFBGA |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| ATMEGA103L | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-bit Microcontroller with 128K Bytes In-System Programmable Flash |
| ATMEGA103L-4AC | 功能描述:8位微控制器 -MCU TQFP-64 128K FLASH 3 RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT |
| ATMEGA103L-4AI | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-Bit Microcontroller with 64K/128K Bytes In-System Programmable Flash |
| ATMEGA128 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-bit Microcontroller with 128K Bytes In-System Programmable Flash |
| ATMEGA128(L) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:ATmega128(L) Preliminary Summary [Updated 9/03. 23 Pages] |
發(fā)布緊急采購，3分鐘左右您將得到回復。