Datasheet

78K0/Ix2 CHAPTER 17 MULTIPLIER
R01UH0010EJ0500 Rev.5.00 569
Feb 28, 2012
(2) Multiplication input data registers A, B (MULA, MULB)
These are 16-bit registers that store data for multiplication. The multiplier multiplies the values of MULA and
MULB.
MULA and MULB can be set by an 8-bit or 16-bit memory manipulation instruction.
Reset signal generation clears these registers to 0000H.
Caution In the case of multiplication of 8 bits by 8 bits, set the multiplied data to MULAL and MULBL.
Figure 17-3. Format of Multiplication input data registers A, B (MULA, MULB)
Symbol
Address: FF70H, FF71H After reset: 0000H R/W
FF71H (MULAH) FF70H (MULAL)
MULA
Symbol
Address: FF72H, FF73H After reset: 0000H R/W
FF73H (MULBH) FF72H (MULBL)
MULB