upd78f0730 Renesas Electronics Corporation., upd78f0730 Datasheet - Page 35

• Manufacturer Part Number: upd78f0730
• Description: 8-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

3.1.2 Internal data memory space
(1) Internal high-speed RAM
(2) Internal expansion RAM
3.1.3 Special function register (SFR) area
Table 3-7 Special Function Register List in 3.2.3 Special function registers (SFRs)).
3.1.4 USB area
to FAFFH (see 12.4.3 Request data registers).
The PD78F0730 incorporates the following RAMs.
On-chip peripheral hardware special function registers (SFRs) are allocated in the area from FF00H to FFFFH (see
Caution Do not access addresses to which SFRs are not assigned.
Some registers for USB (UF0DD0 to UF0DD17 and UF0CIE0 to UF0CIE255) are allocated in the area from F9D1H
The 32-byte area FEE0H to FEFFH is assigned to four general-purpose register banks consisting of eight 8-bit
registers per bank.
This area cannot be used as a program area in which instructions are written and executed.
The internal high-speed RAM can also be used as a stack memory.
The internal expansion RAM can also be used as a normal data area similar to the internal high-speed RAM, as
well as a program area in which instructions can be written and executed.
The internal expansion RAM cannot be used as a stack memory.
PD78F0730
PD78F0730
Part Number
Part Number
Table 3-5. Internal High-Speed RAM Capacity
Table 3-6. Internal Expansion RAM Capacity
Preliminary User’s Manual U19014EJ1V0UD
CHAPTER 3 CPU ARCHITECTURE
1,024
2,048
8 bits (FB00H to FEFFH)
8 bits (F000H to F7FFH)
Internal High-Speed RAM
Internal Expansion RAM
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