ATmega88PA Automotive Atmel Corporation, ATmega88PA Automotive Datasheet - Page 16

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

6.2.1
16
Atmel ATtiny24/44/84 [Preliminary]
Data Memory Access Times
When using register indirect addressing modes with automatic pre-decrement and post-incre-
ment, the address registers X, Y, and Z are decremented or incremented.
The 32 general purpose working registers, 64 I/O Registers, and 128/256/512 bytes of internal
data SRAM in the Atmel
modes. The Register File is described in
Figure 6-2.
This section describes the general access timing concepts for internal memory access. The
internal data SRAM access is performed in two clk
page
Figure 6-3.
16.
Address
Data Memory Map
On-chip Data SRAM Access Cycles
clk
Data
Data
WR
CPU
RD
®
(128/256/512 x 8)
64 I/O Registers
Data Memory
ATtiny24/44/84 are all accessible through all these addressing
Internal SRAM
Compute Address
32 Registers
T1
Memory Access Instruction
“General Purpose Register File” on page
0x0DF/0x015F/0x025F
0x0000 - 0x001F
0x0020 - 0x005F
0x0060
Address valid
T2
CPU
cycles as described in
Next Instruction
T3
Figure 6-3 on
7701E–AVR–02/11
10.