ATMEGA88-20PJ Atmel, ATMEGA88-20PJ Datasheet - Page 16

IC MCU AVR 8K 5V 20MHZ 28-DIP

ATMEGA88-20PJ

Manufacturer Part Number
ATMEGA88-20PJ
Description
IC MCU AVR 8K 5V 20MHZ 28-DIP
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheets

Specifications of ATMEGA88-20PJ

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 6x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
28-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
ATMEGA88-24PJ
ATMEGA88-24PJ
7. AVR Memories
7.1
7.2
16
Overview
In-System Reprogrammable Flash Program Memory
ATmega48/88/168
This section describes the different memories in the ATmega48/88/168. The AVR architecture
has two main memory spaces, the Data Memory and the Program Memory space. In addition,
the ATmega48/88/168 features an EEPROM Memory for data storage. All three memory spaces
are linear and regular.
The ATmega48/88/168 contains 4K/8K/16K bytes On-chip In-System Reprogrammable Flash
memory for program storage. Since all AVR instructions are 16 or 32 bits wide, the Flash is orga-
nized as 2K/4K/8K × 16. For software security, the Flash Program memory space is divided into
two sections, Boot Loader Section and Application Program Section in ATmega88 and
ATmega168. ATmega48 does not have separate Boot Loader and Application Program sec-
tions, and the SPM instruction can be executed from the entire Flash. See SELFPRGEN
description in section
266
The Flash memory has an endurance of at least 10,000 write/erase cycles. The
ATmega48/88/168 Program Counter (PC) is 11/12/13 bits wide, thus addressing the 2K/4K/8K
program memory locations. The operation of Boot Program section and associated Boot Lock
bits for software protection are described in detail in
on page 261
ATmega168” on page
on Flash Programming in SPI- or Parallel Programming mode.
Constant tables can be allocated within the entire program memory address space (see the LPM
– Load Program Memory instruction description).
Timing diagrams for instruction fetch and execution are presented in
ing” on page
and
page
13.
and
282for more details.
“Boot Loader Support – Read-While-Write Self-Programming, ATmega88 and
“SPMCSR – Store Program Memory Control and Status Register” on page
268.
“Memory Programming” on page 284
“Self-Programming the Flash, ATmega48”
contains a detailed description
“Instruction Execution Tim-
2545S–AVR–07/10

Related parts for ATMEGA88-20PJ