AT94K05AL ATMEL Corporation, AT94K05AL Datasheet - Page 46

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AT94K05AL

Manufacturer Part Number
AT94K05AL
Description
Fpslic Devices Combine 5K Gates of Atmel's Patented AT40K Fpga Architecture, a 20 Mips Avr 8-bit Risc Microprocessor Core, Numerous Fixed Microcontroller Peripheries And up to 36K Bytes of Program And Data SRAM.
Manufacturer
ATMEL Corporation
Datasheet

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46
AT94K Series FPSLIC
Figure 29. The Parallel Instruction Fetches and Instruction Executions
Figure 30 shows the internal timing concept for the register file. In a single clock cycle an ALU
operation using two register operands is executed, and the result is stored back to the destina-
tion register.
Figure 30. Single Cycle ALU Operation
The internal data SRAM access is performed in two system clock cycles as described in
Figure 31.
Figure 31. On-chip Data SRAM Access Cycles
Register Operands Fetch
2nd Instruction Execute
AVR CLK
3rd Instruction Execute
1st Instruction Execute
ALU Operation Execute
Address
2nd Instruction Fetch
3rd Instruction Fetch
4th Instruction Fetch
1st Instruction Fetch
Total ExecutionTime
Data
Data
WR
Result Write Back
RD
AVR CLK
AVR CLK
Prev. Address
T1
T1
T1
Address
T2
T2
T2
T3
T3
T3
Rev. 1138F–FPSLI–06/02
T4
T4
T4

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