R0E00008AKCE00EP38 Datasheet, PDF (26/35 Pages) Renesas Technology Corp – Microcomputer Development Environment System

E8a Emulator
7. Notes on Using the E8a Emulator
(2) Pins used by the E8a emulator
The E8a emulator controls the MCUs by using the following pins depending on the usage.
- For debugging/programming: RESET# pin and MODE pin
(3) Registers initialized by the E8a emulator
When the system is launched, the E8a emulator initializes the general registers and some of the flag registers as
shown in Table 7.2.
Table 7.2 E8a Emulator Register Initial Values
Status
E8a Emulator
Activation
Register
PC
R0 to R3 (bank 0, 1)
Initial Value
Reset vector value in the vector address table
0000h
A0, A1 (bank 0, 1)
FB (bank 0, 1)
0000h
0000h
INTB
USP
ISP
SB
0000h
0000h
05FFh
0000h
FLG
0000h
(4) SFRs used by the E8a emulator program
The SFRs listed in Table 7.3 are used by the E8a emulator program as well as the user program.
- Do not change the value in the memory window, etc., by other than the user program.
- Note that although the SFRs can be changed during user program execution, the changed value cannot be read at the
break.
The SFRs listed in Table 7.4 are used by the E8a emulator program, not the user program.
- Do not change the registers, otherwise the E8a cannot control the MCU.
- The SFRs listed in Tables Table 7.3 and Table 7.4 are not initialized by selecting [Debug] -> [Reset CPU] or by using
the RESET command. If register contents are referred to, a value that has been set in the E8a emulator program will
be read out.
Table 7.3 SFRs Used by the E8a Emulator Program (1)
Address
000Ah
0023h
Register
Protect register
High-speed on-chip oscillator control register 0
Symbol
PRCR
FRA0
Bit
Bit 0
Bit 0
Table 7.4 SFRs Used by the E8a Emulator Program (2)
Address
Register
01C0h - 01C2h
01C3h
01C4h - 01C6h
01C7h
Address match interrupt register 0
Address match interrupt enable register 0
Address match interrupt register 1
Address match interrupt enable register 1
Note [*1]: Do not change this register value.
Symbol
RMAD0
AIER0
RMAD1
AIER1
Bit
All bits
All bits
All bits
All bits
Notes on Using the
E8a Emulator
[*1]
[*1]
[*1]
[*1]
REJ10J1739-0200 Rev.2.00 Jul. 03, 2009
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