ATMEGA48A-PU Atmel, ATMEGA48A-PU Datasheet - Page 299

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

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

8271C–AVR–08/10
Table 27-7.
Notes:
Table 27-8.
Notes:
ATmega48A/48PA/88A/88PA/168A/168PA/328/328
High Fuse Byte
WDTON
EESAVE
BODLEVEL2
BODLEVEL1
BODLEVEL0
High Fuse Byte
RSTDISBL
DWEN
SPIEN
WDTON
EESAVE
BOOTSZ1
BOOTSZ0
BOOTRST
(2)
1. See
2. The SPIEN Fuse is not accessible in serial programming mode.
3. See
4. See
1. See
2. The SPIEN Fuse is not accessible in serial programming mode.
3. See
4. The default value of BOOTSZ[1:0] results in maximum Boot Size. See
(3)
(3)
(1)
page
(4)
(4)
(4)
Fuse High Byte for ATmega48A/48PA/88A/88PA/168A/168PA (Continued)
Fuse High Byte for ATmega328/328P
”Alternate Functions of Port C” on page 86
”WDTCSR – Watchdog Timer Control Register” on page 55
Table 28-13 on page 323
”Alternate Functions of Port C” on page 86
”WDTCSR – Watchdog Timer Control Register” on page 55
303.
Bit No
Bit No
4
3
2
1
0
7
6
5
4
3
2
1
0
Description
Watchdog Timer Always On
EEPROM memory is
preserved through the Chip
Erase
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
Watchdog Timer Always On
EEPROM memory is
preserved through the Chip
Erase
Select Boot Size
(see
Table 26-7 on page
Table 26-10 on page 292
Table 26-13 on page 293
for details)
Select Boot Size
(see
Table 26-7 on page
Table 26-10 on page 292
Table 26-13 on page 293
for details)
Select Reset Vector
for BODLEVEL Fuse decoding.
for description of RSTDISBL Fuse.
for description of RSTDISBL Fuse.
291,
291,
and
and
Default Value
1 (unprogrammed)
1 (unprogrammed), EEPROM
not reserved
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
Default Value
1 (unprogrammed)
1 (unprogrammed)
0 (programmed, SPI
programming enabled)
1 (unprogrammed)
1 (unprogrammed), EEPROM
not reserved
0 (programmed)
0 (programmed)
1 (unprogrammed)
for details.
for details.
”Pin Name Mapping” on
(4)
(4)
299