Datasheet

78K0/Ix2 CHAPTER 17 MULTIPLIER
R01UH0010EJ0500 Rev.5.00 567
Feb 28, 2012
CHAPTER 17 MULTIPLIER
17.1 Functions of Multiplier
The multiplier is mounted onto all 78K0/Ix2 microcontroller products.
The multiplier has the following functions.
 Can execute calculation of 8 bits  8 bits = 16 bits.
 Can execute calculation of 16 bits  16 bits = 32 bits.
Figure 17-1 shows the block diagram of the multiplier.
Figure 17-1. Block Diagram of Multiplier
Internal bus
Internal bus
Multiplication input data
register A (MULA)
Multiplication input data
register B (MULB)
32-bit multiplier
16-bit higher multiplication
result storage register (MUL0H)
16-bit lower multiplication result
storage register (MUL0L)