INTERNAL MEMORY
6.1 Outline of the Internal Memory
6
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
Wait insertion
Internal bus connection
Dual port
H’0080 4000 to H’0080 FFFF
Operates with zero wait states
Connected by 32-bit bus
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)
H’0000 0000 to H’000F FFFF
Operates with one wait state
Can be rewritten 100 times
Location address
Wait insertion
Durability
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.”)
32180 Group User’s Manual (Rev.1.0)
6-2
RENESAS [ RENESAS TECHNOLOGY CORP ]
