upd78f0148m1gka1-9eu Renesas Electronics Corporation., upd78f0148m1gka1-9eu Datasheet - Page 412

• Manufacturer Part Number: upd78f0148m1gka1-9eu
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

412
Address: FF62H, FF63H, FF64H, FF65H
Symbol
MDA0H
Symbol
MDA0L
(2) Multiplication/division data register A0 (MDA0H, MDA0L)
Cautions 1. MDA0H is cleared to 0 when an operation is started in the multiplication mode (when
MDA0 is a 32-bit register that sets a 16-bit multiplier A in the multiplication mode and a 32-bit dividend in the
division mode, and stores the 32-bit result of the operation (higher 16 bits: MDA0H, lower 16 bits: MDA0L).
MDA
MDA
031
015
2. Do not change the value of MDA0 during operation processing (while bit 7 (DMUE) of
3. The value read from MDA0 during operation processing (while DMUE is 1) is not
Figure 18-3. Format of Multiplication/Division Data Register A0 (MDA0H, MDA0L)
multiplier/divider control register 0 (DMUC0) is set to 81H).
multiplier/divider control register 0 (DMUC0) is 1).
executed, but the result is undefined.
guaranteed.
MDA
MDA
030
014
MDA
MDA
029
013
FF65H (MDA0HH)
FF63H (MDA0LH)
MDA
MDA
028
012
MDA
MDA
027
011
CHAPTER 18 MULTIPLIER/DIVIDER
After reset: 0000H, 0000H
MDA
MDA
026
010
User’s Manual U15947EJ3V1UD
MDA
MDA
025
009
MDA
MDA
024
008
MDA
MDA
023
007
R/W
MDA
MDA
022
006
MDA
MDA
021
005
Even in this case, the operation is
FF64H (MDA0HL)
FF62H (MDA0LL)
MDA
MDA
020
004
MDA
MDA
019
003
MDA
MDA
018
002
MDA
MDA
017
001
MDA
MDA
016
000