Renesas M32R/ECU Series, User Manual

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6
6-2
INTERNAL MEMORY
32180 Group User’s Manual (Rev.1.0)
6.1 Outline of the Internal Memory
The 32180 internally contains the following types of memory:
• 48-Kbyte RAM
• 1-Mbyte (1,024-Kbyte) flash memory
6.2 Internal RAM
Specifications of the internal RAM are shown below.
Table 6.2.1 Specifications of the Internal RAM
Item Specification
Size 48 Kbytes
Location address H’0080 4000 to H’0080 FFFF
Wait insertion Operates with zero wait states
Internal bus connection Connected by 32-bit bus
Dual port By using the Real-Time Debugger (RTD), data can be read (monitored) or written to any area of
the internal RAM via serial communication from external devices independently of the CPU. (See
Chapter 14, “Real-Time Debugger.”)
Notes: • Immediately after power-on reset (for the power-on case in which VDDE also goes up from GND), the value of the
RAM is undefined.
• If the RAM is reset during RAM backup (power for only VDDE is on), the RAM retains the value it had immediately
before being reset.
6.3 Internal Flash Memory
Specifications of the internal flash memory are shown below.
Table 6.3.1 Specifications of the Internal Flash Memory
Item Specification
Size 1 Mbytes (1,024 Kbytes)
Location address H’0000 0000 to H’000F FFFF
Wait insertion Operates with one wait state
Durability Can be rewritten 100 times
Internal bus connection Instruction access: Connected by 64-bit bus (Transfer rates equivalent to zero wait states on 32-bit
bus are possible.)
Data access: Connected by 32-bit bus
Other Virtual flash emulation function is incorporated. (See Section 6.6, “Virtual Flash Emulation Function.”)
6.1 Outline of the Internal Memory