R5S72011 RENESAS [Renesas Technology Corp], R5S72011 Datasheet - Page 127
![no-image](/images/no-image-200.jpg)
R5S72011
Manufacturer Part Number
R5S72011
Description
32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7200 Series
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.R5S72011.pdf
(1196 pages)
- Current page: 127 of 1196
- Download datasheet (8Mb)
(2)
When the H-UDI reset assert command is set, this LSI enters the power-on reset state. Power-on
reset by means of an H-UDI reset assert command is equivalent to power-on reset by means of the
RES pin. Setting the H-UDI reset negate command cancels the power-on reset state. The time
required between an H-UDI reset assert command and H-UDI reset negate command is the same
as the time to keep the RES pin low to initiate a power-on reset. In the power-on reset state
generated by an H-UDI reset assert command, setting the H-UDI reset negate command starts
power-on reset exception handling. The CPU operates in the same way as when a power-on reset
was caused by the RES pin.
(3)
When a setting is made for a power-on reset to be generated in the WDT’s watchdog timer mode,
and WTCNT of the WDT overflows, this LSI enters the power-on reset state.
In this case, WRCSR of the WDT and FRQCR of the CPG are not initialized by the reset signal
generated by the WDT.
If a reset caused by the RES pin or the H-UDI reset assert command occurs simultaneously with a
reset caused by WDT overflow, the reset caused by the RES pin or the H-UDI reset assert
command has priority, and the WOVF bit in WRCSR is cleared to 0. When power-on reset
exception processing is started by the WDT, the CPU operates in the same way as when a power-
on reset was caused by the RES pin.
Power-On Reset by Means of H-UDI Reset Assert Command
Power-On Reset Initiated by WDT
Rev. 2.00 Sep. 07, 2007 Page 99 of 1164
Section 5 Exception Handling
REJ09B0321-0200
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