ATTINY261A-MUR Atmel, ATTINY261A-MUR Datasheet - Page 180
ATTINY261A-MUR
Manufacturer Part Number
ATTINY261A-MUR
Description
MCU AVR 2KB FLASH 20MHZ 32QFN
Manufacturer
Atmel
Series
AVR® ATtinyr
Datasheet
1.ATTINY461A-MU.pdf
(292 pages)
Specifications of ATTINY261A-MUR
Core Processor
AVR
Core Size
8-Bit
Speed
20MHz
Connectivity
USI
Peripherals
Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Number Of I /o
16
Program Memory Size
2KB (1K x 16)
Program Memory Type
FLASH
Eeprom Size
128 x 8
Ram Size
128 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 11x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATTINY261A-MUR
Manufacturer:
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Quantity:
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18.7.7
180
ATtiny261A/461A/861A
Reading the Flash
programmed simultaneously. The programming algorithm for the EEPROM data memory is as
follows (refer to
Data loading):
Figure 18-6. Programming the EEPROM Waveforms
The algorithm for reading the Flash memory is as follows (refer to
page 177
RESET +12V
1. A: Load Command “0001 0001”.
2. G: Load Address High Byte (0x00 - 0xFF).
3. B: Load Address Low Byte (0x00 - 0xFF).
4. C: Load Data (0x00 - 0xFF).
5. E: Latch data (give PAGEL a positive pulse).
6. K: Repeat 3 through 5 until the entire buffer is filled.
7. L: Program EEPROM page
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 BS to “1”. The Flash word high byte can now be read at DATA.
6. Set OE to “1”.
PAGEL/BS1
RDY/BSY
XA1/BS2
XTAL1
DATA
a. Set BS to “0”.
b. Give WR a negative pulse. This starts programming of the EEPROM page.
c. Wait until to RDY/BSY goes high before programming the next page (See
XA0
WR
OE
RDY/BSY goes low.
18-6
for details on Command and Address loading):
for signal waveforms).
0x11
A
“Programming the Flash” on page 177
ADDR. HIGH
G
ADDR. LOW
B
DATA
C
XX
E
ADDR. LOW
B
for details on Command, Address and
DATA
C
K
XX
E
“Programming the Flash” on
L
8197B–AVR–01/10
Figure
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