AT94K40AL-25DQU Atmel, AT94K40AL-25DQU Datasheet - Page 122

• Manufacturer Part Number: AT94K40AL-25DQU
• Description: IC FPSLIC 40K GATE 25MHZ 208PQFP
• Manufacturer: Atmel
• Series: FPSLIC®r

Specifications of AT94K40AL-25DQU

• 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: -40°C ~ 85°C
• Package / Case: 208-MQFP, 208-PQFP
• For Use With: ATSTK594 - BOARD FPSLIC DAUGHTER FOR STK500
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

4.28.7.2
122
AT94KAL Series FPSLIC
mul16x16_32
Description
Usage
Statistics
Note:
Unsigned multiply of two 16-bit numbers with a 32-bit result.
R19:R18:R17:R16 = R23:R22 • R21:R20
Cycles: 17 + ret
Words: 13 + ret
Register usage: R0 to R2 and R16 to R23 (11 registers)
mul16x16_32:
clr
mul
movw
mul
movw
mul
add
adc
adc
mul
add
adc
adc
ret
1. Full orthogonality, i.e., any register pair can be used as long as the result and the two oper-
ands do not share register pairs. The routine is non-destructive to the operands.
r2
r23, r21
r19:r18, r1:r0
r22, r20
r17:r16, r1:r0
r23, r20
r17, r0
r18, r1
r19, r2
r21, r22
r17, r0
r18, r1
r19, r2
; ah * bh
; al * bl
; ah * bl
; bh * al
(1)
1138I–FPSLI–1/08