参数资料
型号: ATTINY43U-MUR
厂商: Atmel
文件页数: 49/158页
文件大小: 0K
描述: MCU AVR 4KB FLASH 8MHZ 20QFN
产品培训模块: tinyAVR Introduction
标准包装: 6,000
系列: AVR® ATtiny
核心处理器: AVR
芯体尺寸: 8-位
速度: 8MHz
连通性: USI
外围设备: 欠压检测/复位,POR,PWM,温度传感器,WDT
输入/输出数: 16
程序存储器容量: 4KB(2K x 16)
程序存储器类型: 闪存
EEPROM 大小: 64 x 8
RAM 容量: 256 x 8
电压 - 电源 (Vcc/Vdd): 1.8 V ~ 5.5 V
数据转换器: A/D 4x10b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 20-WFQFN 裸露焊盘
包装: 带卷 (TR)
142
8048C–AVR–02/12
ATtiny43U
19.2
Fuse Bytes
The ATtiny43U has three Fuse bytes. Table 19-3, Table 19-4 and Table 19-5 briefly describe the
functionality of all the fuses and how they are mapped into the Fuse bytes. Note that the fuses
are read as logical zero, “0”, if they are programmed..
Notes:
1. Enables SPM instruction. See “Self-Programming the Flash” on page 135.
Notes:
1. See “Alternate Functions of Port B” on page 75 for description of RSTDISBL and DWEN
Fuses. When RSTDISBL fuse has been programmed, parallel programming must be used for
unprogramming the fuse and programming the device.
2. DWEN must be unprogrammed when Lock Bit security is required. See “Program And Data
3. The SPIEN Fuse is not accessible in SPI Programming mode.
details.
5. See Table 20-5 on page 161 for BODLEVEL Fuse decoding.
Table 19-3.
Fuse Extended Byte
Fuse High Byte
Bit No
Description
Default Value
7
-
1 (unprogrammed)
6
-
1 (unprogrammed)
5
-
1 (unprogrammed)
4
-
1 (unprogrammed)
3
-
1 (unprogrammed)
2
-
1 (unprogrammed)
1
-
1 (unprogrammed)
0
Self-Programming Enable
1 (unprogrammed)
Table 19-4.
Fuse High Byte
Fuse High Byte
Bit No
Description
Default Value
RSTDISBL(1)
7
External Reset disable
1 (unprogrammed)
DWEN(2)
6
DebugWIRE Enable
1 (unprogrammed)
SPIEN(3)
5
Enable Serial Program and Data
Downloading
0 (programmed, SPI prog.
enabled)
WDTON(4)
4
Watchdog Timer always on
1 (unprogrammed)
EESAVE
3
EEPROM memory is preserved
through the Chip Erase
1 (unprogrammed,
EEPROM not preserved)
BODLEVEL2(5)
2
Brown-out Detector trigger level
1 (unprogrammed)
BODLEVEL1(5)
1
Brown-out Detector trigger level
1 (unprogrammed)
BODLEVEL0(5)
0
Brown-out Detector trigger level
1 (unprogrammed)
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