AT94K05AL-25BQX Atmel, AT94K05AL-25BQX Datasheet - Page 126
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AT94K05AL-25BQX
Manufacturer Part Number
AT94K05AL-25BQX
Description
Manufacturer
Atmel
Datasheet
1.AT94K05AL-25BQX.pdf
(204 pages)
Specifications of AT94K05AL-25BQX
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
144
Package Type
LQFP
Lead Free Status / RoHS Status
Compliant
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4.28.7.5
126
AT94KAL Series FPSLIC
fmuls16x16_32
Description
Usage
Statistics
Note:
Signed fractional multiply of two 16-bit numbers with a 32-bit result.
R19:R18:R17:R16 = (R23:R22 • R21:R20) << 1
Cycles: 20 + ret
Words: 16 + ret
Register usage: R0 to R2 and R16 to R23 (11 registers)
fmuls16x16_32:
clr
fmuls r23, r21
movw
fmul
adc
movw
fmulsu
sbc
add
adc
adc
fmulsu
sbc
add
adc
adc
ret
1. The routine is non-destructive to the operands.
r2
r19:r18, r1:r0
r22, r20
r18, r2
r17:r16, r1:r0
r19, r2
r17, r0
r18, r1
r19, r2
r19, r2
r17, r0
r18, r1
r19, r2
r23, r20
r21, r22
; ( (signed)ah * (signed)bh ) << 1
; ( al * bl ) << 1
; ( (signed)ah * bl ) << 1
; Sign extend
; ( (signed)bh * al ) << 1
; Sign extend
(1)
1138I–FPSLI–1/08
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