ATTINY43U-MU Atmel, ATTINY43U-MU Datasheet - Page 148
ATTINY43U-MU
Manufacturer Part Number
ATTINY43U-MU
Description
MCU AVR 4K FLASH 8MHZ 20-QFN
Manufacturer
Atmel
Series
AVR® ATtinyr
Specifications of ATTINY43U-MU
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
20-MLF®, QFN
Processor Series
ATTINY4x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
256 B
Interface Type
SPI
Maximum Clock Frequency
8 MHz
Number Of Programmable I/os
16
Number Of Timers
2
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
EWAVR, EWAVR-BL
Development Tools By Supplier
ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 4 Channel
For Use With
ATSTK600-TINYX3U - STK600 SOCKET/ADAPTER TINYX3U
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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19.6.6
19.6.7
148
ATtiny43U
Reading the Flash
Reading the EEPROM
K: Repeat 3 through 5 until the entire buffer is filled.
L: Program EEPROM page
Figure 19-4. Programming the EEPROM Waveforms
The algorithm for reading the Flash memory is as follows (refer to
page 145
The algorithm for reading the EEPROM memory is as follows (refer to
on page 145
5. E: No action.
1. Set BS1 to “0”.
2. Give WR a negative pulse. This starts programming of the EEPROM page. RDY/BSY
3. Wait until to RDY/BSY goes high before programming the next page (See
1. A: Load Command “0000 0010”.
2. G: Load Address High Byte (0x00 - 0xFF).
3. B: Load Address Low Byte (0x00 - 0xFF).
4. Set OE to “0”, and BS1 to “0”. The Flash word low byte can now be read at DATA.
5. Set BS1 to “1”. The Flash word high byte can now be read at DATA.
6. Set OE to “1”.
1. A: Load Command “0000 0011”.
2. G: Load Address High Byte (0x00 - 0xFF).
3. B: Load Address Low Byte (0x00 - 0xFF).
4. Set OE to “0”, and BS1 to “0”. The EEPROM Data byte can now be read at DATA.
5. Set OE to “1”.
XA1/BS2
goes low.
for signal waveforms).
RESET +12V
PAGEL/BS1
RDY/BSY
DATA
CLKI
for details on Command and Address loading):
XA0
WR
OE
for details on Command and Address loading):
0x11
A
ADDR. HIGH
G
ADDR. LOW
B
DATA
C
XX
E
ADDR. LOW
B
DATA
C
K
XX
E
“Programming the Flash” on
“Programming the Flash”
L
Figure 19-4
8048B–AVR–03/09
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