AT94K05AL-25AJI Atmel, AT94K05AL-25AJI Datasheet - Page 45
AT94K05AL-25AJI
Manufacturer Part Number
AT94K05AL-25AJI
Description
IC FPSLIC 5K GATE 25MHZ 84PLCC
Manufacturer
Atmel
Series
FPSLIC®r
Specifications of AT94K05AL-25AJI
Core Type
8-bit AVR
Speed
25MHz
Interface
I²C, UART
Program Sram Bytes
4K-16K
Fpga Sram
2kb
Data Sram Bytes
4K ~ 16K
Fpga Core Cells
256
Fpga Gates
5K
Fpga Registers
436
Voltage - Supply
3 V ~ 3.6 V
Mounting Type
Surface Mount
Operating Temperature
-40°C ~ 85°C
Package / Case
84-PLCC
For Use With
ATSTK594 - BOARD FPSLIC DAUGHTER FOR STK500
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
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4.7
4.8
4.9
4.10
4.10.1
1138I–FPSLI–1/08
X-register, Y-register and Z-register
ALU – Arithmetic Logic Unit
Multiplier Unit
SRAM Data Memory
Program and Data Addressing Modes
Registers R26..R31 have some added functions to their general-purpose usage. These registers
are address pointers for indirect addressing of the SRAM. The three indirect address registers X,
Y and Z have functions as fixed displacement, automatic increment and decrement (see the
descriptions for the different instructions).
The high-performance AVR ALU operates in direct connection with all the 32 general-purpose
working registers. Within a single clock cycle, ALU operations between registers in the register
file are executed. The ALU operations are divided into three main categories – arithmetic, logical
and bit-functions.
The high-performance AVR Multiplier operates in direct connection with all the 32 general-pur-
pose working registers. This unit performs 8 x 8 multipliers every two clock cycles. See multiplier
details on
External data SRAM (or program) cannot be used with the FPSLIC AT94K family.
The five different addressing modes for the data memory cover: Direct, Indirect with Displace-
ment, 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 Indirect with Displacement mode features a 63 address locations reach from the base
address given by the Y- or Z-register.
When using register indirect addressing modes with automatic Pre-decrement and Post-incre-
ment, the address registers X, Y and Z are decremented and incremented.
The entire data address space including the 32 general-purpose working registers and the 64
I/O registers are all accessible through all these addressing modes. See the next section for a
detailed description of the different addressing modes.
The embedded AVR core supports powerful and efficient addressing modes for access to the
program memory (SRAM) and data memory (SRAM, Register File and I/O Memory). This sec-
tion describes the different addressing modes supported by the AVR architecture.
Register Direct, Single-register Rd
The operand is contained in register d (Rd).
Register Direct, Two Registers Rd and Rr
Operands are contained in register r (Rr) and d (Rd). The result is stored in register d (Rd).
I/O Direct
Operand address is contained in 6 bits of the instruction word. n is the destination or source reg-
ister address.
page
112.
AT94KAL Series FPSLIC
45
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