ATMEGA48A-PU Atmel, ATMEGA48A-PU Datasheet - Page 297

IC MCU AVR 4K FLASH 28PDIP

ATMEGA48A-PU

Manufacturer Part Number
ATMEGA48A-PU
Description
IC MCU AVR 4K FLASH 28PDIP
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheets

Specifications of ATMEGA48A-PU

Core Processor
AVR
Core Size
8-Bit
Speed
20MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
23
Program Memory Size
4KB (2K x 16)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 6x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
28-DIP (0.300", 7.62mm)
Controller Family/series
Atmega
No. Of I/o's
23
Eeprom Memory Size
256Byte
Ram Memory Size
512Byte
Cpu Speed
20MHz
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATMEGA48A-PU
Manufacturer:
Microchip Technology
Quantity:
1 051
27.2
8271C–AVR–08/10
Fuse Bits
Table 27-3.
Notes:
The ATmega48A/48PA/88A/88PA/168A/168PA/328/328P has three Fuse bytes.
Table 27-9
Fuse bytes. Note that the fuses are read as logical zero, “0”, if they are programmed.
Table 27-4.
ATmega48A/48PA/88A/88PA/168A/168PA/328/328
Extended Fuse Byte
SELFPRGEN
BLB0 Mode
BLB1 Mode
1
2
3
4
1
2
3
4
1. Program the Fuse bits and Boot Lock bits before programming the LB1 and LB2.
2. “1” means unprogrammed, “0” means programmed
describe briefly the functionality of all the fuses and how they are mapped into the
Lock Bit Protection Modes
Extended Fuse Byte for ATmega 48A/48PA
BLB02
BLB12
1
1
0
0
1
1
0
0
BLB01
BLB11
Bit No
1
0
0
1
1
0
0
1
7
6
5
4
3
2
1
0
No restrictions for SPM or LPM accessing the Application
section.
SPM is not allowed to write to the Application section.
SPM is not allowed to write to the Application section, and LPM
executing from the Boot Loader section is not allowed to read
from the Application section. If Interrupt Vectors are placed in
the Boot Loader section, interrupts are disabled while executing
from the Application section.
LPM executing from the Boot Loader section is not allowed to
read from the Application section. If Interrupt Vectors are placed
in the Boot Loader section, interrupts are disabled while
executing from the Application section.
No restrictions for SPM or LPM accessing the Boot Loader
section.
SPM is not allowed to write to the Boot Loader section.
SPM is not allowed to write to the Boot Loader section, and LPM
executing from the Application section is not allowed to read
from the Boot Loader section. If Interrupt Vectors are placed in
the Application section, interrupts are disabled while executing
from the Boot Loader section.
LPM executing from the Application section is not allowed to
read from the Boot Loader section. If Interrupt Vectors are
placed in the Application section, interrupts are disabled while
executing from the Boot Loader section.
Description
Self Programming Enable
(1)(2)
. Only ATmega88A/88PA/168A/168PA/328/328P.
Default Value
1
1
1
1
1
1
1
1 (unprogrammed)
Table 27-5
297
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