AT94K05AL-25DQU Atmel, AT94K05AL-25DQU Datasheet - Page 126

• 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

4.28.7.5
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