Hitachi SH7751 Hardware Manual page 44

Table 1.1 SH7751 Series Features (cont)
Item
Clock pulse
generator (CPG)
Memory
management
unit (MMU)
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


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