ATA6602-PLQW ATMEL [ATMEL Corporation], ATA6602-PLQW Datasheet - Page 38

• Manufacturer Part Number: ATA6602-PLQW
• Description: Microcontroller with LIN Transceiver, 5V Regulator and Watchdog
• Manufacturer: ATMEL [ATMEL Corporation]

4.5
4.5.1
38
AVR ATA6602/ATA6603 Memories
ATA6602/ATA6603
In-System Reprogrammable Flash Program Memory
This section describes the different memories in the ATA6602/ATA6603. The AVR architecture
has two main memory spaces, the Data Memory and the Program Memory space. In addition,
the ATA6602/ATA6603 features an EEPROM Memory for data storage. All three memory
spaces are linear and regular.
The ATA6602/ATA6603 contains 8/16 Kbytes On-chip In-System Reprogrammable Flash mem-
ory for program storage. Since all AVR instructions are 16 or 32 bits wide, the Flash is organized
as 2/4/8K x 16. For software security, the Flash Program memory space is divided into two sec-
tions, Boot Loader Section and Application Program Section in ATA6602 and ATA6603. See
SELFPRGEN description in section
SPMCSR” on page 286
The Flash memory has an endurance of at least 75,000 write/erase cycles. The
ATA6602/ATA6603 Program Counter (PC) is 11/12/13 bits wide, thus addressing the 2/4/8K
program memory locations. The operation of Boot Program section and associated Boot Lock
bits for software protection are described in detail in
Self-Programming, ATA6602 and ATA6603” on page
contains a detailed 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
ing” on page
Figure 4-7.
35.
Program Memory Map, ATA6602/ATA6603
for more details.
Application Flash Section
Program Memory
“Store Program Memory Control and Status Register –
“Boot Loader Support – Read-While-Write
281.
“Memory Programming” on page 297
0x0000
0x7FF
“Instruction Execution Tim-
4921C–AUTO–01/07