ATmega88PA Automotive Atmel Corporation, ATmega88PA Automotive Datasheet - Page 16

• Manufacturer Part Number: ATmega88PA Automotive
• Manufacturer: Atmel Corporation

8. AVR Memories
8.1
8.2
16
Overview
In-System Reprogrammable Flash Program Memory
Atmel ATmega48PA/88PA/168PA [Preliminary]
This section describes the different memories in the Atmel
AVR architecture has two main memory spaces, the Data Memory and the Program Memory
space. In addition, the Atmel ATmega48PA/88PA/168PA features an EEPROM Memory for
data storage. All three memory spaces are linear and regular.
The Atmel ATmega48PA/88PA/168PA contains 4/8/16K bytes On-chip In-System Reprogram-
mable Flash memory for program storage. Since all AVR instructions are 16 or 32 bits wide,
the Flash is organized as 2/4/8/16K x 16. For software security, the Flash Program memory
space is divided into two sections, Boot Loader Section and Application Program Section in
the Atmel ATmega88PA and the Atmel ATmega168PA. See SELFPRGEN description in sec-
tion
details.
The Flash memory has an endurance of at least 10,000 write/erase cycles. The Atmel
ATmega48PA/88PA/168PA Program Counter (PC) is 11/12/13/14 bits wide, thus addressing
the 2/4/8/16K program memory locations. The operation of Boot Program section and associ-
ated Boot Lock bits for software protection are described in detail in
Flash, Atmel ATmega48PA” on page 269
Self-Programming” on page
description 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
Timing” on page
“SPMCSR – Store Program Memory Control and Status Register” on page 292
13.
277.
“Memory Programming” on page 294
and
“Boot Loader Support – Read-While-Write
®
ATmega48PA/88PA/168PA. The
“Self-Programming the
“Instruction Execution
contains a detailed
9223B–AVR–09/11
for more