ATMEGA88P-20MUR Atmel, ATMEGA88P-20MUR Datasheet - Page 292

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ATMEGA88P-20MUR

Manufacturer Part Number
ATMEGA88P-20MUR
Description
MCU AVR 8KB FLASH 20MHZ 32QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet

Specifications of ATMEGA88P-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
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
27.2
8025L–AVR–7/10
Fuse Bits
Table 27-3.
Notes:
The ATmega48P/88P/168P has three Fuse bytes.
functionality of all the fuses and how they are mapped into the Fuse bytes. Note that the fuses
are read as logical zero, “0”, if they are programmed.
Table 27-4.
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
Lock Bit Protection Modes
Extended Fuse Byte for ATmega48P
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 ATmega88P/168P/328P.
Table 27-4
ATmega48P/88P/168P
-
Table 27-7
Default Value
1
1
1
1
1
1
1
1 (unprogrammed)
describe briefly the
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