HD6417709SF100B Renesas Electronics America, HD6417709SF100B Datasheet - Page 155
HD6417709SF100B
Manufacturer Part Number
HD6417709SF100B
Description
MCU 32-Bit SuperH RISC ROMLess 1.7V/3.3V 208-Pin LQFP
Manufacturer
Renesas Electronics America
Datasheet
1.D6417709SBP167BV.pdf
(809 pages)
Specifications of HD6417709SF100B
Package
208LQFP
Family Name
SuperH
Maximum Speed
100 MHz
Operating Supply Voltage
1.7|3.3 V
Data Bus Width
32 Bit
Program Memory Type
ROMLess
Number Of Programmable I/os
96
Interface Type
IrDA/SCI/SCIF/UDI
On-chip Adc
8-chx10-bit
On-chip Dac
2-chx8-bit
Operating Temperature
-20 to 75 °C
Number Of Timers
3
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5.3
5.3.1
If the cache is enabled, whenever instructions or data in memory are accessed the cache will be
searched to see if the desired instruction or data is in the cache. Figure 5.4 illustrates the method
by which the cache is searched. The cache is a physical cache and holds physical addresses in its
address section.
Entries are selected using bits 11–4 of the address (virtual) of the access to memory and the
address tag of that entry is read. In parallel to reading of the address tag, the virtual address is
translated to a physical address in the MMU. The physical address after translation and the
physical address read from the address section are compared. The address comparison uses all four
ways. When the comparison shows a match and the selected entry is valid (V = 1), a cache hit
occurs. When the comparison does not show a match or the selected entry is not valid (V = 0), a
cache miss occurs. Figure 5.4 shows a hit on way 1.
Cache Operation
Searching the Cache
Rev. 5.00, 09/03, page 109 of 760
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