R0K572030S000BE Renesas Electronics America, R0K572030S000BE Datasheet - Page 1459

• Manufacturer Part Number: R0K572030S000BE
• Description: KIT DEV FOR SH7203
• Manufacturer: Renesas Electronics America
• Series: Renesas Starter Kits (RSK)r
• Type: MCUr

Specifications of R0K572030S000BE

• Contents: CPU Board, LCD Module, E10A-Lite Emulator, Cable, QuickStart Guide and CD-ROM
• Silicon Manufacturer: Renesas
• Kit Contents: Board
• Silicon Family Name: SH7203
• Silicon Core Number: R5S72030W200FP
• Tool / Board Applications: General Purpose MCU, MPU, DSP, DSC
• Mcu Supported Families: SH7203
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: SH7203
• Lead Free Status / Rohs Status: Compliant

28.3.3
This example describes a transition to software standby mode on the falling edge of the NMI
signal, and cancellation on the rising edge of the NMI signal. The timing is shown in figure 28.1.
When the NMI pin is changed from high to low level while the NMI edge select bit (NMIE) in the
interrupt control register 0 (ICR0) is set to 0 (falling edge detection), the NMI interrupt is
accepted. When the NMIE bit is set to 1 (rising edge detection) by the NMI exception service
routine, the STBY and DEEP bits in STBCR are set to 1 and 0 respectively, and a SLEEP
instruction is executed, software standby mode is entered. Thereafter, software standby mode is
canceled when the NMI pin is changed from low to high level.
Oscillator
CK
NMI pin
NMIE bit
STBY bit
LSI state
Figure 28.1 NMI Timing in Software Standby Mode (Application Example)
Software Standby Mode Application Example
execution
Program
exception
handling
NMI
service routine
Exception
standby mode
Software
Rev. 3.00 Sep. 28, 2009 Page 1427 of 1650
settling time
Oscillation
Section 28 Power-Down Modes
NMI exception
REJ09B0313-0300
handling