AT94K05AL-25DQU Atmel, AT94K05AL-25DQU Datasheet - Page 113

• Manufacturer Part Number: AT94K05AL-25DQU
• Manufacturer: Atmel

Specifications of AT94K05AL-25DQU

• Device System Gates: 5000
• Propagation Delay Time: 12.1ns
• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (max): 3.6V
• Operating Supply Voltage (min): 3V
• Operating Temperature Classification: Industrial
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Mounting: Surface Mount
• Pin Count: 208
• Package Type: PQFP
• Lead Free Status / RoHS Status: Compliant

4.28.1
1138I–FPSLI–1/08
8-bit Multiplication
Table 4-24.
Doing an 8-bit multiply using the hardware multiplier is simple: just load the operands into two
registers (or only one for square multiply) and execute one of the multiply instructions. The result
will be placed in register pair R1:R0. However, note that only the MUL instruction does not have
register usage restrictions.
multiply instructions.
8-bit x 8-bit Routines:
Unsigned Multiply 8 x 8 = 16 bits
Signed Multiply 8 x 8 = 16 bits
Fractional Signed/Unsigned Multiply 8 x 8 = 16 bits
Fractional Signed Multiply-accumulate 8 x 8 + = 16 bits
16-bit x 16-bit Routines:
Signed/Unsigned Multiply 16 x 16 = 32 bits
UnSigned Multiply 16 x 16 = 32 bits
Signed Multiply 16 x 16 = 32 bits
Signed Multiply-accumulate 16 x 16 + = 32 bits
Fractional Signed Multiply 16 x 16 = 32 bits
Fractional Signed Multiply-accumulate 16 x 16 + = 32 bits
Performance Summary
Figure 4-36
shows the valid (operand) register usage for each of the
AT94KAL Series FPSLIC
Word (Cycles)
Word (Cycles)
13 (17)
15 (19)
19 (23)
16 (20)
21 (25)
1 (2)
1 (2)
1 (2)
3 (4)
6 (9)
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