參數(shù)資料
型號(hào): ATTINY43U-MUR
廠商: Atmel
文件頁數(shù): 59/158頁
文件大?。?/td> 0K
描述: MCU AVR 4KB FLASH 8MHZ 20QFN
產(chǎn)品培訓(xùn)模塊: tinyAVR Introduction
標(biāo)準(zhǔn)包裝: 6,000
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(shè)備: 欠壓檢測(cè)/復(fù)位,POR,PWM,溫度傳感器,WDT
輸入/輸出數(shù): 16
程序存儲(chǔ)器容量: 4KB(2K x 16)
程序存儲(chǔ)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-WFQFN 裸露焊盤
包裝: 帶卷 (TR)
151
8048C–AVR–02/12
ATtiny43U
19.6.9
Programming the Fuse High Bits
The algorithm for programming the Fuse High bits is as follows (refer to “Programming the
Flash” on page 147 for details on Command and Data loading):
1.
A: Load Command “0100 0000”.
2.
C: Load Data Low Byte. Bit n = “0” programs and bit n = “1” erases the Fuse bit.
3.
Set BS1 to “1” and BS2 to “0”. This selects high data byte.
4.
Give WR a negative pulse and wait for RDY/BSY to go high.
5.
Set BS1 to “0”. This selects low data byte.
19.6.10
Programming the Extended Fuse Bits
The algorithm for programming the Extended Fuse bits is as follows (refer to “Programming the
Flash” on page 147 for details on Command and Data loading):
1.
1. A: Load Command “0100 0000”.
2.
2. C: Load Data Low Byte. Bit n = “0” programs and bit n = “1” erases the Fuse bit.
3.
3. Set BS1 to “0” and BS2 to “1”. This selects extended data byte.
4.
4. Give WR a negative pulse and wait for RDY/BSY to go high.
5.
5. Set BS2 to “0”. This selects low data byte.
Figure 19-5. Programming the FUSES Waveforms
19.6.11
Programming the Lock Bits
The algorithm for programming the Lock bits is as follows (refer to “Programming the Flash” on
page 147 for details on Command and Data loading):
1.
A: Load Command “0010 0000”.
2.
C: Load Data Low Byte. Bit n = “0” programs the Lock bit. If LB mode 3 is programmed
(LB1 and LB2 is programmed), it is not possible to program the Boot Lock bits by any
External Programming mode.
3.
Give WR a negative pulse and wait for RDY/BSY to go high.
The Lock bits can only be cleared by executing Chip Erase.
RDY/BSY
WR
OE
RESET +12V
0x40
DATA
XX
XA1/BS2
XA0
PAGEL/BS1
CLKI
AC
0x40
DATA
XX
AC
Write Fuse Low byte
Write Fuse high byte
0x40
DATA
XX
AC
Write Extended Fuse byte
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