AT90LS2323-4SI Atmel, AT90LS2323-4SI Datasheet - Page 11
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AT90LS2323-4SI
Manufacturer Part Number
AT90LS2323-4SI
Description
IC MCU 2K FLASH 4MHZ LV 8-SOIC
Manufacturer
Atmel
Series
AVR® 90LSr
Datasheet
1.AT90LS2323-4PC.pdf
(64 pages)
Specifications of AT90LS2323-4SI
Core Processor
AVR
Core Size
8-Bit
Speed
4MHz
Connectivity
SPI
Peripherals
Brown-out Detect/Reset, POR, WDT
Number Of I /o
3
Program Memory Size
2KB (1K x 16)
Program Memory Type
FLASH
Eeprom Size
128 x 8
Ram Size
128 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 6 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
8-SOIC (5.3mm Width), 8-SOP, 8-SOEIAJ
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Data Converters
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AT90LS2323-4SI
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
SRAM Data Memory
1004D–09/01
Figure 9 shows how the AT90S2323/2343 Data Memory is organized.
Figure 9. SRAM Organization
The 224 data memory locations address the Register file, I/O memory and the data
SRAM. The first 96 locations address the Register file + I/O memory, and the next 128
locations address the data SRAM.
The five different addressing modes for the data memory cover: Direct, Indirect with Dis-
placement, Indirect, Indirect with Pre-decrement and Indirect with Post-increment. In the
register file, registers R26 to R31 feature the indirect addressing pointer registers.
The direct addressing reaches the entire data address space.
The Indirect with Displacement mode features 63 address locations reached from the
base address given by the Y- and Z-register.
When using register indirect addressing modes with automatic pre-decrement and post-
increment, the address registers X, Y, and Z are used and decremented and
incremented.
The 32 general-purpose working registers, 64 I/O registers and the 128 bytes of data
SRAM in the AT90S2323/2343 are all directly accessible through all these addressing
modes.
I/O Registers
Register File
R29
R30
R31
$3D
$3E
$3F
$00
$01
$02
R0
R1
R2
…
…
AT90S/LS2323/2343
Data Address Space
Internal SRAM
$DD
$DE
$DF
$1D
$1E
$1F
$5D
$5E
$5F
$00
$01
$02
$20
$21
$22
$60
$61
$62
…
…
…
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