AT94K05AL-25DQU Atmel, AT94K05AL-25DQU Datasheet - Page 128
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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4.28.7.7
128
AT94KAL Series FPSLIC
Comment on Implementations
All 16-bit x 16-bit = 32-bit functions implemented here start by clearing the R2 register, which is
just used as a “dummy” register with the “add with carry” (ADC) and “subtract with carry” (SBC)
operations. These operations do not alter the contents of the R2 register. If the R2 register is not
used elsewhere in the code, it is not necessary to clear the R2 register each time these functions
are called, but only once prior to the first call to one of the functions.
add
fmulsu
fmuls r23, r21
movw
fmul
adc
adc
adc
adc
sbc
add
adc
adc
fmulsu
sbc
add
adc
adc
ret
r16, r0
r5:r4,r1:r0
r22, r20
r4, r2
r17, r1
r18, r4
r19, r5
r23, r20
r19, r2
r17, r0
r18, r1
r19, r2
r19, r2
r17, r0
r18, r1
r19, r2
r21, r22
; ( (signed)ah * (signed)bh ) << 1
; ( al * bl ) << 1
; ( (signed)ah * bl ) << 1
; ( (signed)bh * al ) << 1
1138I–FPSLI–1/08
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