ATMEGA88-20MUR Atmel, ATMEGA88-20MUR Datasheet - Page 287

• Manufacturer Part Number: ATMEGA88-20MUR
• Description: MCU AVR 8K FLASH 20MHZ 32QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA88-20MUR

• 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: 8KB (4K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 1K 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: *
• Cpu Family: ATmega
• Device Core: AVR
• Device Core Size: 8b
• Frequency (max): 20MHz
• Interface Type: SPI/TWI/USART
• Total Internal Ram Size: 1KB
• # I/os (max): 23
• Number Of Timers - General Purpose: 3
• Operating Supply Voltage (typ): 3.3/5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 2.7V
• On-chip Adc: 8-chx10-bit
• Instruction Set Architecture: RISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 32
• Package Type: MLF EP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

2545T–AVR–05/11
Table 28-5.
Note:
Table 28-6.
Notes:
Extended fuse byte
–
–
–
–
–
BOOTSZ1
BOOTSZ0
BOOTRST
High fuse byte
RSTDISBL
DWEN
SPIEN
WDTON
EESAVE
BODLEVEL2
BODLEVEL1
BODLEVEL0
(2)
1. The default value of BOOTSZ1..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)
for details.
(4)
(4)
(4)
Extended fuse byte for mega88/168.
Fuse high byte.
“Alternate functions of port C” on page 81
“WDTCSR – Watchdog timer control register” on page 53
Table 29-4 on page 307
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
and
for details)
Select boot size
(see
and
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
Table 27-9 on page 282
Table 27-9 on page 282
Table 27-6 on page 281
Table 27-6 on page 281
for description of RSTDISBL fuse.
ATmega48/88/168
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.
Table 28-11 on page 290
(1)
(1)
287