IXXBB1 Fujitsu Microelectronics, Inc., IXXBB1 Datasheet - Page 33

• Manufacturer Part Number: IXXBB1
• Description: 32-bit Proprietary Microcontroller Cmos Fr60 Mb91301 Series
• Manufacturer: Fujitsu Microelectronics, Inc.

Return pointer (RP)
System stack pointer (SSP)
User stack pointer (USP)
Multiplication and division result register (MDH/MDL)
The RP is the return pointer and stores the subroutine return address.
The SSP is the system stack pointer and functions as R15 when the S flag is “0”.
The USP is the user stack pointer and functions as R15 when the S flag is “1”.
MDH/MDL : 32-bit registers used for multiplication and division.
MDH
MDL
: Remainder
: Quotient
MDH
MDL
RP
SSP
USP
Multiplication and division result register
31
31
31
31
SSP
USP
RP
0
0
0
0
MB91301 Series
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