ATTINY48-MMHR Atmel, ATTINY48-MMHR Datasheet - Page 198
ATTINY48-MMHR
Manufacturer Part Number
ATTINY48-MMHR
Description
MCU AVR 4KB FLASH 12MHZ 28QFN
Manufacturer
Atmel
Series
AVR® ATtinyr
Datasheet
1.ATTINY48-MU.pdf
(302 pages)
Specifications of ATTINY48-MMHR
Core Processor
AVR
Core Size
8-Bit
Speed
12MHz
Connectivity
I²C, SPI
Peripherals
Brown-out Detect/Reset, POR, WDT
Number Of I /o
24
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 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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21.2.7
21.2.8
21.2.9
21.2.10
198
ATtiny48/88
Reading the EEPROM
Programming Low Fuse Bits
Programming High Fuse Bits
Programming Extended Fuse Bits
The algorithm for reading the EEPROM memory is as follows (see
page 194
The algorithm for programming the low fuse bits is as follows (see
page 194
The algorithm for programming the high fuse bits is as follows (see
page 194
The algorithm for programming the extended fuse bits is as follows (see
Flash” on page 194
EEPROM programming waveforms are illustrated in
and letters refer to the programming steps described above.
• Set BS1 to “1”. The Flash word high byte can now be read at DATA
• Set OE to “1”
• A: Load command “0000 0011”
• G: Load address high byte (0x00 – 0xFF)
• B: Load address low byte (0x00 – 0xFF)
• Set OE to “0”, and BS1 to “0”. The EEPROM Data byte can now be read at DATA
• Set OE to “1”
• A: Load command “0100 0000”
• C: Load data low byte. Bit n = “0” programs and bit n = “1” erases the fuse bit
• Give WR a negative pulse and wait for RDY/BSY to go high
• A: Load command “0100 0000”
• C: Load data low byte. Bit n = “0” programs and bit n = “1” erases the fuse bit
• Set BS1 to “1” and BS2 to “0”. This selects high data byte
• Give WR a negative pulse and wait for RDY/BSY to go high
• Set BS1 to “0”. This selects low data byte
• A: Load command “0100 0000”
• C: Load data low byte. Bit n = “0” programs and bit n = “1” erases the fuse bit
• Set BS1 to “0” and BS2 to “1”. This selects extended data byte
• Give WR a negative pulse and wait for RDY/BSY to go high
• Set BS2 to “0”. This selects low data byte
for details on command and address loading):
for details on command and data loading):
for details on command and data loading):
for details on command and data loading):
Figure
21-5, where XX means “don’t care”
“Programming the Flash” on
“Programming the Flash” on
“Programming the Flash” on
“Programming the
8008G–AVR–04/11
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