UPD784026 Renesas Electronics Corporation., UPD784026 Datasheet - Page 75
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UPD784026
Manufacturer Part Number
UPD784026
Description
16/8-bit Single-chip Microcontrollers
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD784026.pdf
(759 pages)
- Current page: 75 of 759
- Download datasheet (3Mb)
3.1 MEMORY SPACE
and internal RAM) depends on the LOCATION instruction. A LOCATION instruction must be executed after reset release, and
can only be used once.
(1) When LOCATION 0 instruction is executed
(2) When LOCATION 0FH instruction is executed
The PD784026 can access a 1 M-byte memory space. The mapping of the internal data area (special function registers
The program after reset release must be as follows:
The internal data area is mapped onto addresses 0F700H to 0FFFFH.
Internal ROM is mapped onto addresses 0 to 0F6FFH in the PD784026, and onto addresses 0 to 0BFFFH in the
cannot be used when the LOCATION 0 instruction is executed.
External memory is accessed in external memory extension mode.
The internal data area is mapped onto addresses FF700H to FFFFFH.
Internal ROM is mapped onto addresses 0 to 0FFFFH in the PD784026, and onto addresses 0 to 0BFFFH in the
External memory is accessed in external memory extension mode.
PD784025. The 2304 bytes of the 64 K-byte ROM incorporated in the PD784026 that overlap the internal data area
PD784025.
RSTVCT
INITSEG
RSTSTRT: LOCATION 0H; or LOCATION 0FH
CHAPTER 3 CPU ARCHITECTURE
CSEG
DW
CSEG
MOVG SP, #STKBGN
to
AT 0
RSTSTRT
BASE
35
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