ATTINY44A-MMHR Atmel, ATTINY44A-MMHR Datasheet - Page 165
ATTINY44A-MMHR
Manufacturer Part Number
ATTINY44A-MMHR
Description
MCU AVR 4KB FLASH 20MHZ 20QFN
Manufacturer
Atmel
Series
AVR® ATtinyr
Specifications of ATTINY44A-MMHR
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
12
Program Memory Size
4KB (2K x 16)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Table 19-12. Serial Programming Instruction Set (Continued)
Notes:
Figure 19-2.
8183C–AVR–03/11
Instruction/Operation
Write Lock bits
Write Fuse bits
Write Fuse High bits
Write Extended Fuse Bits
Byte 1
1. Not all instructions are applicable for all parts.
2. a = address
3. Bits are programmed ‘0’, unprogrammed ‘1’.
4. To ensure future compatibility, unused Fuses and Lock bits should be unprogrammed (‘1’) .
5. Refer to the correspondig section for Fuse and Lock bits, Calibration and Signature bytes and Page size.
6. Instructions accessing program memory use a word address. This address may be random within the page range.
7. See http://www.atmel.com/avr for Application Notes regarding programming and programmers.
Load Program Memory Page (High/Low Byte)/
Load EEPROM Memory Page (page access)
Bit 15 B
Serial Programming Instruction example
Byte 2
Adr M M S S B
A
(1)
If the LSB in RDY/BSY data byte out is ‘1’, a programming operation is still pending. Wait until
this bit returns ‘0’ before the next instruction is carried out.
Within the same page, the low data byte must be loaded prior to the high data byte.
Byte 3
Adr LSB
Page Offset
0
Serial Programming Instruction
Byte 4
Byte 1
$AC
$AC
$AC
$AC
Program Memory/
EEPROM Memory
Page Buffer
Page N-1
Page 0
Page 1
Page 2
Byte 1
Byte 2
$E0
$A0
$A8
$A4
Instruction Format
Page Number
Bit 15 B
Byte 2
Write Program Memory Page/
Write EEPROM Memory Page
Adr MSB
ATtiny24A/44A/84A
Byte 3
$00
$00
$00
$00
Byte 3
A A dr r L L SB B
0
data byte in
data byte in
data byte in
data byte in
Byte4
Byte 4
165
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