ATMEGA48A-MMHR Atmel, ATMEGA48A-MMHR Datasheet - Page 298
ATMEGA48A-MMHR
Manufacturer Part Number
ATMEGA48A-MMHR
Description
IC MCU AVR 4K FLASH 28QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA48A-MMHR.pdf
(566 pages)
Specifications of ATMEGA48A-MMHR
Package / Case
28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Speed
20MHz
Number Of I /o
23
Eeprom Size
256 x 8
Core Processor
AVR
Program Memory Type
FLASH
Ram Size
512 x 8
Program Memory Size
4KB (4K x 8)
Data Converters
A/D 8x10b
Oscillator Type
Internal
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Connectivity
I²C, SPI, UART/USART
Core Size
8-Bit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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8271C–AVR–08/10
Table 27-5.
Note:
Table 27-6.
Note:
Table 27-7.
ATmega48A/48PA/88A/88PA/168A/168PA/328/328
Extended Fuse Byte
–
–
–
–
–
BOOTSZ1
BOOTSZ0
BOOTRST
Extended Fuse Byte
–
–
–
–
–
BODLEVEL2
BODLEVEL1
BODLEVEL0
High Fuse Byte
RSTDISBL
DWEN
SPIEN
(2)
1. The default value of BOOTSZ[1:0] results in maximum Boot Size. See
1. See
(1)
page
(1)
(1)
(1)
Extended Fuse Byte for ATmega88A/88PA/168A/168PA
Extended Fuse Byte for ATmega328/328P
Fuse High Byte for ATmega48A/48PA/88A/88PA/168A/168PA
Table 28-13 on page 323
303.
Bit No
Bit No
Bit No
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
7
6
5
Description
–
–
–
–
–
Select Boot Size
(see
Table 26-7 on page 291
Table 26-10 on page 292
for details)
Select Boot Size
(see
Table 26-7 on page 291
Table 26-10 on page 292
for details)
Select Reset Vector
Description
–
–
–
–
–
Brown-out Detector trigger
level
Brown-out Detector trigger
level
Brown-out Detector trigger
level
Description
External Reset Disable
debugWIRE Enable
Enable Serial Program and
Data Downloading
for BODLEVEL Fuse decoding.
and
and
Default Value
1
1
1
1
1
0 (programmed)
0 (programmed)
1 (unprogrammed)
Default Value
1
1
1
1
1
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
Default Value
1 (unprogrammed)
1 (unprogrammed)
0 (programmed, SPI
programming enabled)
”Pin Name Mapping” on
(1)
(1)
298
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