AT94K05AL-25BQX Atmel, AT94K05AL-25BQX Datasheet - Page 127

• Manufacturer Part Number: AT94K05AL-25BQX
• Manufacturer: Atmel

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

4.28.7.6
1138I–FPSLI–1/08
fmac16x16_32
Description
Usage
Statistics
Signed fractional multiply-accumulate of two 16-bit numbers with a 32-bit result.
R19:R18:R17:R16 += (R23:R22 • R21:R20) << 1
Cycles: 25 + ret
Words: 21 + ret
Register usage: R0 to R2 and R16 to R23 (11 registers)
fmac16x16_32:
fmac16x16_32_method_B
speed/Size
clr
fmuls r23, r21
add
adc
fmul
adc
adc
add
adc
adc
adc
fmulsu
sbc
add
adc
adc
fmulsu
sbc
add
adc
adc
ret
clr
r2
r18, r0
r19, r1
r22, r20
r18, r2
r19, r2
r16, r0
r17, r1
r18, r2
r19, r2
r19, r2
r17, r0
r18, r1
r19, r2
r19, r2
r17, r0
r18, r1
r19, r2
r2
r23, r20
r21, r22
; Register usage optimized
; ( (signed)ah * (signed)bh ) << 1
; ( al * bl ) << 1
optimized
; but reduces cycles/words by 2
; ( (signed)ah * bl ) << 1
; ( (signed)bh * al ) << 1
; uses two temporary registers (r4,r5),
AT94KAL Series FPSLIC
127