HD6417751RF240V Renesas Electronics America, HD6417751RF240V Datasheet - Page 184

• Manufacturer Part Number: HD6417751RF240V
• Description: MPU 1.5/3.3V 0K PB-FREE 256-QFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7750r

Specifications of HD6417751RF240V

• Core Processor: SH-4
• Core Size: 32-Bit
• Speed: 240MHz
• Connectivity: EBI/EMI, FIFO, SCI, SmartCard
• Peripherals: DMA, POR, WDT
• Number Of I /o: 39
• Program Memory Type: ROMless
• Ram Size: 48K x 8
• Voltage - Supply (vcc/vdd): 1.4 V ~ 1.6 V
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 256-QFP Exposed Pad, 256-eQFP, 256-HQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

3. Memory Management Unit (MMU)
Rev.4.00 Oct. 10, 2008 Page 84 of 1122
REJ09B0370-0400
Access prohibited
Instruction TLB
miss exception
Search UTLB
Match?
VA is
in P4 area
Instruction TLB protection
violation exception
No
No
Figure 3.11 Flowchart of Memory Access Using ITLB
Yes
VA is
in P2 area
0
VPNs match
Record in ITLB
Instruction access to virtual address (VA)
and V = 1
Hardware ITLB
miss handling
Yes
CCR.ICE?
0
VA is
in P1 area
1
and CCR.ICE = 1
Cache access
C = 1
PR?
1
0 (User)
Yes
No
No
No
and (MMUCR.SV = 0 or
and ASIDs match and
MMUCR.AT = 1
entry matches
VPNs match
SR.MD = 0)
No
Only one
SR.MD?
SH = 0
V = 1
1 (Privileged)
Yes
Yes
Yes
Yes
VA is in P0, U0,
or P3 area
Memory access
(Non-cacheable)
multiple hit exception
Instruction TLB
No