R5S77631Y266BGV Renesas Electronics America, R5S77631Y266BGV Datasheet - Page 185
R5S77631Y266BGV
Manufacturer Part Number
R5S77631Y266BGV
Description
IC SUPERH MPU ROMLESS 499BGA
Manufacturer
Renesas Electronics America
Series
SuperH® SH7780r
Datasheet
1.R5S77631Y266BGV.pdf
(2056 pages)
Specifications of R5S77631Y266BGV
Core Processor
SH-4A
Core Size
32-Bit
Speed
266MHz
Connectivity
Audio Codec, I²C, MMC, SCI, SIM, SIO, SSI, USB
Peripherals
DMA, LCD, POR, WDT
Number Of I /o
107
Program Memory Type
ROMless
Ram Size
16K x 8
Voltage - Supply (vcc/vdd)
1.15 V ~ 1.35 V
Data Converters
A/D 4x10b; D/A 2x8b
Oscillator Type
External
Operating Temperature
-20°C ~ 75°C
Package / Case
499-BGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
R5S77631Y266BGV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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5.5.3
When the BL bit in SR is 0, exceptions and interrupts are accepted.
When the BL bit in SR is 1 and an exception other than a user break is generated, the CPU's
internal registers and the registers of the other modules are set to their states following a manual
reset, and the CPU branches to the same address as in a reset (H'A0000000). For the operation in
the event of a user break, see section 41, User Break Controller (UBC). If an ordinary interrupt
occurs, the interrupt request is held pending and is accepted after the BL bit has been cleared to 0
by software. If a nonmaskable interrupt (NMI) occurs, it can be held pending or accepted
according to the setting made by software.
Thus, normally, SPC and SSR are saved and then the BL bit in SR is cleared to 0, to enable
multiple exception state acceptance.
5.5.4
The RTE instruction is used to return from exception handling. When the RTE instruction is
executed, the SPC contents are restored to PC and the SSR contents to SR, and the CPU returns
from the exception handling routine by branching to the SPC address. If SPC and SSR were saved
to external memory, set the BL bit in SR to 1 before restoring the SPC and SSR contents and
issuing the RTE instruction.
Exception Requests and BL Bit
Return from Exception Handling
Rev. 2.00 May 22, 2009 Page 115 of 1982
Section 5 Exception Handling
REJ09B0256-0200
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