UPD78F1502AGK-GAK-AX Datasheet, PDF (101/1031 Pages) Renesas Technology Corp – 16-Bit Single-Chip Microcontrollers

78K0R/Lx3
CHAPTER 3 CPU ARCHITECTURE
3.1.6 Data memory addressing
Addressing refers to the method of specifying the address of the instruction to be executed next or the address of the
register or memory relevant to the execution of instructions.
Several addressing modes are provided for addressing the memory relevant to the execution of instructions for the
78K0R/Lx3 microcontrollers, based on operability and other considerations. For areas containing data memory in
particular, special addressing methods designed for the functions of special function registers (SFR) and general-purpose
registers are available for use. Figures 3-5 to 3-7 show correspondence between data memory and addressing.
<R>
Figure 3-5. Correspondence Between Data Memory and Addressing
(μPD78F1500A, 78F1503A, 78F1506A, 78F1510A, 78F1513A, 78F1516A)
FFFFFH
FFF20H
FFF1FH
FFF00H
FFEFFH
FFEE0H
FFEDFH
FFE20H
FFE1FH
FEF00H
FEEFFH
Special function register (SFR)
256 bytes
General-purpose register
32 bytes
RAM
4 KB
Mirror
55.75 KB
F1000H
F0FFFH
F0800H
F07FFH
F0000H
EFFFFH
Reserved
Extended special
function register (2nd SFR)
2 KB
SFR addressing
Register addressing
Short direct
addressing
Direct addressing
Register indirect addressing
Based addressing
Based indexed addressing
Reserved
10000H
0FFFFH
00000H
Flash memory
64 KB
R01UH0004EJ0501 Rev.5.01
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Jun 20, 2011