AT94K40AL-25BQC Atmel, AT94K40AL-25BQC Datasheet - Page 128

• Manufacturer Part Number: AT94K40AL-25BQC
• Description: IC FPSLIC 40K GATE 25MHZ 144LQFP
• Manufacturer: Atmel
• Series: FPSLIC®r

Specifications of AT94K40AL-25BQC

• Core Type: 8-bit AVR
• Speed: 18MHz
• Interface: I²C, UART
• Program Sram Bytes: 20K-32K
• Fpga Sram: 18kb
• Data Sram Bytes: 4K ~ 16K
• Fpga Core Cells: 2304
• Fpga Gates: 40K
• Fpga Registers: 2862
• Voltage - Supply: 3 V ~ 3.6 V
• Mounting Type: Surface Mount
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 144-LQFP
• For Use With: ATSTK594 - BOARD FPSLIC DAUGHTER FOR STK500
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

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