HD6417750RF240DV Renesas Electronics America, HD6417750RF240DV Datasheet - Page 183
HD6417750RF240DV
Manufacturer Part Number
HD6417750RF240DV
Description
MPU 3V 16K I-TEMP,PB-FREE 208-QF
Manufacturer
Renesas Electronics America
Series
SuperH® SH7750r
Datasheet
1.D6417750RBP240DV.pdf
(1164 pages)
Specifications of HD6417750RF240DV
Core Processor
SH-4
Core Size
32-Bit
Speed
240MHz
Connectivity
EBI/EMI, FIFO, SCI, SmartCard
Peripherals
DMA, POR, WDT
Number Of I /o
28
Program Memory Type
ROMless
Ram Size
48K x 8
Voltage - Supply (vcc/vdd)
1.4 V ~ 1.6 V
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
208-QFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
Data Converters
-
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Manufacturer
Quantity
Price
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HD6417750RF240DV
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Hardware Processing: In the event of an instruction TLB miss exception, hardware carries out
the following processing:
1. Sets the VPN of the virtual address at which the exception occurred in PTEH.
2. Sets the virtual address at which the exception occurred in TEA.
3. Sets exception code H'040 in EXPEVT.
4. Sets the PC value indicating the address of the instruction at which the exception occurred in
5. Sets the SR contents at the time of the exception in SSR. The R15 contents at this time are
6. Sets the MD bit in SR to 1, and switches to privileged mode.
7. Sets the BL bit in SR to 1, and masks subsequent exception requests.
8. Sets the RB bit in SR to 1.
9. Branches to the address obtained by adding offset H'0000 0400 to the contents of VBR, and
Software Processing (Instruction TLB Miss Exception Handling Routine): Software is
responsible for searching the external memory page table and assigning the necessary page table
entry. Software should carry out the following processing in order to find and assign the necessary
page table entry.
1. Write to PTEL the values of the PPN, PR, SZ, C, D, SH, V, and WT bits in the page table
2. When the entry to be replaced in entry replacement is specified by software, write that value to
3. Execute the LDTLB instruction and write the contents of PTEH, PTEL, and PTEA to the TLB.
4. Finally, execute the exception handling return instruction (RTE), terminate the exception
SPC. If the exception occurred at a delay slot, sets the PC value indicating the address of the
delayed branch instruction in SPC.
saved in SGR.
starts the instruction TLB miss exception handling routine.
entry recorded in the external memory address translation table. If necessary, the values of the
SA and TC bits should be written to PTEA.
URC in the MMUCR register. If URC is greater than URB at this time, the value should be
changed to an appropriate value after issuing an LDTLB instruction.
handling routine, and return control to the normal flow. The RTE instruction should be issued
at least one instruction after the LDTLB instruction.
Section 3 Memory Management Unit (MMU)
Rev.7.00 Oct. 10, 2008 Page 97 of 1074
REJ09B0366-0700
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