HD6417751 Datasheet, PDF (45/1105 Pages) Renesas Technology Corp – SuperH RISC engine

Table 1.1 SH7751 Series Features (cont)
Item
Clock pulse
generator (CPG)
Features
• Choice of main clock
 SH7751: 1/2, 1, 3, or 6 times EXTAL
 SH7751R: 1, 6, or 12 times EXTAL
• Clock modes: (Maximum frequency: Varies with models)
 CPU frequency: 1, 1/2, 1/3, 1/4, 1/6, or 1/8 times main clock
 Bus frequency: 1, 1/2, 1/3, 1/4, 1/6, or 1/8 times main clock
 Peripheral frequency: 1/2, 1/3, 1/4, 1/6, or 1/8 times main clock
• Power-down modes
 Sleep mode
 Deep sleep mode
 Pin sleep mode
 Standby mode
 Hardware standby mode
 Module standby function
• Single-channel watchdog timer
Memory
management
unit (MMU)
• 4-Gbyte address space, 256 address space identifiers (8-bit ASIDs)
• Single virtual mode and multiple virtual memory mode
• Supports multiple page sizes: 1 kbyte, 4 kbytes, 64 kbytes, 1 Mbyte
• 4-entry fully-associative TLB for instructions
• 64-entry fully-associative TLB for instructions and operands
• Supports software-controlled replacement and random-counter
replacement algorithm
• TLB contents can be accessed directly by address mapping
Rev. 3.0, 04/02, page 5 of 1064