AT94K05AL-25DQU Atmel, AT94K05AL-25DQU Datasheet - Page 121
AT94K05AL-25DQU
Manufacturer Part Number
AT94K05AL-25DQU
Description
Manufacturer
Atmel
Datasheet
1.AT94K05AL-25DQU.pdf
(204 pages)
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
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4.28.7
4.28.7.1
1138I–FPSLI–1/08
Implementations
mul16x16_16
The registers R19:R18:R17:R16 will be incremented with the result of the multiplication of
0.771484375 with the ADC conversion result. In this example, the ADC result is treated as a
signed fraction number. We could also treat it as a signed integer and call it “mac16x16_32”
instead of “fmac16x16_32”. In this case, the 0.771484375 should be replaced with an integer.
Description
Usage
Statistics
Note:
Multiply of two 16-bit numbers with a 16-bit result.
R17:R16 = R23:R22 • R21:R20
Cycles: 9 + ret
Words: 6 + ret
Register usage: R0, R1 and R16 to R23 (8 registers)
mul16x16_16:
mul
movw
mul
add
mul
add
ret
1. Full orthogonality, i.e., any register pair can be used as long as the result and the two oper-
ands do not share register pairs. The routine is non-destructive to the operands.
r22, r20
r17:r16, r1:r0
r23, r20
r17, r0
r21, r22
r17, r0
; al * bl
; ah * bl
; bh * al
AT94KAL Series FPSLIC
(1)
121
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