R01UH0092EJ0110 Rev.1.10
Page 135 of 807
Jul 31, 2012
M16C/64C Group
10. Processor Mode
10.2.3
Program 2 Area Control Register (PRG2C)
Set the PRC6 bit in the PRCR register to 1 (write enabled) before rewriting this register.
PRG2C0 (Program ROM 2 disable bit) (b0)
This bit is used to select the function of addresses 10000h to 13FFFh. Table 10.7 lists Program ROM 2
(Addresses 10000h to 13FFFh).
Program ROM 2 includes the on-chip debugger monitor area and user boot code area. Refer to 30.7.1
“User Boot Function” for details.
Table 10.7
Program ROM 2 (Addresses 10000h to 13FFFh)
PRG2C0 Bit in PRG2C Register
0
1
Processor Mode
Single-chip mode
Program ROM 2
Reserved area
Memory expansion mode
Program ROM 2
External area
Microprocessor mode
Reserved area
External area
b7
0
b6 b5 b4
b1
b2
b3
Program 2 Area Control Register
Symbol
PRG2C
Address
0010h
Bit Symbol
Bit Name
RW
PRG2C0
Reset Value
XXXX XX00b
RW
b0
Function
—
(b7-b2)
—
No register bits. If necessary, set to 0. The read value is undefined.
0 : Enable program ROM 2
1 : Disable program ROM 2
Program ROM 2 disable bit
Set to 0.
RW
(b1)
Reserved bit
Summary of Contents for M16C Series
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