ATTINY43U-MUR Atmel, ATTINY43U-MUR Datasheet - Page 149
![MCU AVR 4KB FLASH 8MHZ 20QFN](/photos/6/87/68751/313-20-qfn_sml.jpg)
ATTINY43U-MUR
Manufacturer Part Number
ATTINY43U-MUR
Description
MCU AVR 4KB FLASH 8MHZ 20QFN
Manufacturer
Atmel
Series
AVR® ATtinyr
Specifications of ATTINY43U-MUR
Core Processor
AVR
Core Size
8-Bit
Speed
8MHz
Connectivity
USI
Peripherals
Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Number Of I /o
16
Program Memory Size
4KB (2K x 16)
Program Memory Type
FLASH
Eeprom Size
64 x 8
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 4x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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19.6.8
19.6.9
19.6.10
19.6.11
8048B–AVR–03/09
Programming the Fuse Low Bits
Programming the Fuse High Bits
Programming the Extended Fuse Bits
Programming the Lock Bits
The algorithm for programming the Fuse Low bits is as follows (refer to
on page 145
The algorithm for programming the Fuse High bits is as follows (refer to
Flash” on page 145
The algorithm for programming the Extended Fuse bits is as follows (refer to
Flash” on page 145
Figure 19-5. Programming the FUSES Waveforms
The algorithm for programming the Lock bits is as follows (refer to
page 145
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. Give WR a negative pulse and wait for RDY/BSY to go high.
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.
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.
RESET +12V
PAGEL/BS1
RDY/BSY
XA1/BS2
for details on Command and Data loading):
DATA
CLKI
XA0
WR
OE
for details on Command and Data loading):
0x40
A
for details on Command and Data loading):
for details on Command and Data loading):
DATA
C
Write Fuse Low byte
XX
0x40
A
DATA
C
Write Fuse high byte
XX
0x40
“Programming the Flash” on
A
“Programming the Flash”
DATA
C
Write Extended Fuse byte
“Programming the
XX
“Programming the
149
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