AT94K05AL-25AQC Atmel, AT94K05AL-25AQC Datasheet - Page 113
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AT94K05AL-25AQC
Manufacturer Part Number
AT94K05AL-25AQC
Description
Manufacturer
Atmel
Datasheet
1.AT94K05AL-25AQC.pdf
(204 pages)
Specifications of AT94K05AL-25AQC
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
Commercial
Operating Temperature (min)
0C
Operating Temperature (max)
70C
Mounting
Surface Mount
Pin Count
100
Package Type
PQFP
Lead Free Status / RoHS Status
Not Compliant
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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)
113
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