參數(shù)資料
型號: ATTINY43U-SUR
廠商: Atmel
文件頁數(shù): 8/158頁
文件大?。?/td> 0K
描述: MCU AVR 4KB FLASH 8MHZ 20SOIC
產(chǎn)品培訓模塊: tinyAVR Introduction
標準包裝: 1,000
系列: AVR® ATtiny
核心處理器: AVR
芯體尺寸: 8-位
速度: 8MHz
連通性: USI
外圍設備: 欠壓檢測/復位,POR,PWM,溫度傳感器,WDT
輸入/輸出數(shù): 16
程序存儲器容量: 4KB(2K x 16)
程序存儲器類型: 閃存
EEPROM 大?。?/td> 64 x 8
RAM 容量: 256 x 8
電壓 - 電源 (Vcc/Vdd): 1.8 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 4x10b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 20-SOIC(0.295",7.50mm 寬)
包裝: 帶卷 (TR)
其它名稱: ATTINY43U-SUR-ND
105
8048C–AVR–02/12
ATtiny43U
<continued>
SPITransfer_loop:
out
USICR,r17
in
r16, USISR
sbrs
r16, USIOIF
rjmp
SPITransfer_loop
in
r16,USIDR
ret
The code is size optimized using only eight instructions (plus return). The code example
assumes that the DO and USCK pins have been enabled as outputs in DDRA. The value stored
in register r16 prior to the function is called is transferred to the slave device, and when the
transfer is completed the data received from the slave is stored back into the register r16.
The second and third instructions clear the USI Counter Overflow Flag and the USI counter
value. The fourth and fifth instructions set three-wire mode, positive edge clock, count at USITC
strobe, and toggle USCK. The loop is repeated 16 times.
The following code demonstrates how to use the USI as an SPI master with maximum speed
(f
SCK = fCK/2):
SPITransfer_Fast:
out
USIDR,r16
ldi
r16,(1<<USIWM0)|(0<<USICS0)|(1<<USITC)
ldi
r17,(1<<USIWM0)|(0<<USICS0)|(1<<USITC)|(1<<USICLK)
out
USICR,r16 ; MSB
out
USICR,r17
out
USICR,r16
out
USICR,r17
out
USICR,r16
out
USICR,r17
out
USICR,r16
out
USICR,r17
out
USICR,r16
out
USICR,r17
out
USICR,r16
out
USICR,r17
out
USICR,r16
out
USICR,r17
out
USICR,r16 ; LSB
out
USICR,r17
in
r16,USIDR
ret
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ATTINY441-MMHR 制造商:Atmel Corporation 功能描述:16MHZ,3X3MM, 20VQFN, IND.GRADE,GREEN T&R - Tape and Reel 制造商:Atmel Corporation 功能描述:IC MCU 8BIT 4KB FLASH 20VQFN