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

• Manufacturer Part Number: AT94K05AL-25AJI
• Description: IC FPSLIC 5K GATE 25MHZ 84PLCC
• Manufacturer: Atmel
• Series: FPSLIC®r

Specifications of AT94K05AL-25AJI

• Core Type: 8-bit AVR
• Speed: 25MHz
• Interface: I²C, UART
• Program Sram Bytes: 4K-16K
• Fpga Sram: 2kb
• Data Sram Bytes: 4K ~ 16K
• Fpga Core Cells: 256
• Fpga Gates: 5K
• Fpga Registers: 436
• Voltage - Supply: 3 V ~ 3.6 V
• Mounting Type: Surface Mount
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 84-PLCC
• For Use With: ATSTK594 - BOARD FPSLIC DAUGHTER FOR STK500
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

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