ATMEGA48P-20MUR Atmel, ATMEGA48P-20MUR Datasheet - Page 293

• Manufacturer Part Number: ATMEGA48P-20MUR
• Description: MCU AVR 4K FLASH 20MHZ 32QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA48P-20MUR

• 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): 2.7 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

8025L–AVR–7/10
Table 27-5.
Note:
Table 27-6.
Notes:
Extended Fuse Byte
–
–
–
–
–
BOOTSZ1
BOOTSZ0
BOOTRST
High Fuse Byte
RSTDISBL
DWEN
SPIEN
WDTON
EESAVE
BODLEVEL2
BODLEVEL1
BODLEVEL0
(2)
1. The default value of BOOTSZ[1:0] results in maximum Boot Size. See
1. See
2. The SPIEN Fuse is not accessible in serial programming mode.
3. See
4. See
(3)
(1)
page
(4)
(4)
(4)
Extended Fuse Byte for ATmega88P/168P
Fuse High Byte for ATmega48P/88P/168P
”Alternate Functions of Port C” on page 83
”WDTCSR – Watchdog Timer Control Register” on page 55
Table 28-4 on page 314
296.
Bit No
Bit No
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
for BODLEVEL Fuse decoding.
Description
–
–
–
–
–
Select Boot Size
(see
Table 26-7 on page 287
Table 26-10 on page 288
for details)
Select Boot Size
(see
Table 26-7 on page 287
Table 26-10 on page 288
for details)
Select Reset Vector
Description
External Reset Disable
debugWIRE Enable
Enable Serial Program and
Data Downloading
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
ATmega48P/88P/168P
for description of RSTDISBL Fuse.
and
and
Default Value
1
1
1
1
1
0 (programmed)
0 (programmed)
1 (unprogrammed)
Default Value
1 (unprogrammed)
1 (unprogrammed)
0 (programmed, SPI
programming enabled)
1 (unprogrammed)
1 (unprogrammed), EEPROM
not reserved
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
for details.
”Pin Name Mapping” on
(1)
(1)
293