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MB91302A/V301A Datasheet(PDF) 35 Page - Fuji Electric

Part # MB91302A/V301A
Description  32-Bit Proprietary Microcontroller
PDF  135 Pages
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Manufacturer  FUJI [Fuji Electric]
Direct Link  http://www.fujielectric.co.jp/eng/fdt/scd
Logo FUJI - Fuji Electric

MB91302A/V301A Datasheet(HTML) 35 Page - Fuji Electric

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MB91301 Series
35
■ GENERAL PURPOSE REGISTERS
General purpose registers R0 to R15 are used by the CPU. The registers are used as the accumulator and
memory access pointers for CPU operations.
The following three registers are treated as having special meanings to enhance the operation of some instruc-
tions.
R13 : Virtual accumulator (AC)
R14 : Frame pointer (FP)
R15 : Stack pointer (SP)
The values of R0 to R14 after a reset are undefined. R15 is initialized to 0000 0000H (SSP value) .
R0
R1
R12
R13
R14
R15
AC (Accumulator)
FP (Frame Pointer)
SP (Stack Pointer)
XXXX XXXXH
XXXX XXXXH
0000 0000H
Initial Value
32-bit



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