dspic33fj128mc204 Microchip Technology Inc., dspic33fj128mc204 Datasheet - Page 26

• Manufacturer Part Number: dspic33fj128mc204
• Description: High-performance, 16-bit Digital Signal Controllers
• Manufacturer: Microchip Technology Inc.

3.4
The
dsPIC33FJ64MCX02/X04,
dsPIC33FJ128MCX02/X04 features a 17-bit by 17-bit
single-cycle multiplier that is shared by both the MCU
ALU and DSP engine. The multiplier can perform
signed, unsigned and mixed-sign multiplication. Using
a 17-bit by 17-bit multiplier for 16-bit by 16-bit
multiplication not only allows you to perform mixed-sign
multiplication, it also achieves accurate results for
special operations, such as (-1.0) x (-1.0).
The
dsPIC33FJ64MCX02/X04,
dsPIC33FJ128MCX02/X04 supports 16/16 and 32/16
divide operations, both fractional and integer. All divide
instructions are iterative operations. They must be
executed within a REPEAT loop, resulting in a total
execution time of 19 instruction cycles. The divide
operation can be interrupted during any of those
19 cycles without loss of data.
A 40-bit barrel shifter is used to perform up to a 16-bit
left or right shift in a single cycle. The barrel shifter can
be used by both MCU and DSP instructions.
DS70291C-page 24
Special MCU Features
dsPIC33FJ32MC302/304,
dsPIC33FJ32MC302/304,
and
and
Preliminary
© 2009 Microchip Technology Inc.