M-V850E-IA4 Renesas Electronics America, M-V850E-IA4 Datasheet - Page 78

• Manufacturer Part Number: M-V850E-IA4
• Description: KIT EVAL V850E IA4 UPD70F3186
• Manufacturer: Renesas Electronics America

Specifications of M-V850E-IA4

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

3.4.8
that the application system does not inadvertently stop due to a program hang-up. A write access to the special
registers is made in a specific sequence, and an illegal store operation is reported to the system status register (SYS).
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Special registers are registers that are protected from being written with illegal data due to a program hang-up.
The V850E/IA3 and V850E/IA4 have the following four special registers.
• Power save control register (PSC)
• Processor clock control register (PCC)
• Reset source flag register (RESF)
• Clock monitor mode register (CLM)
In addition, a command register (PRCDM) is provided to protect against a write access to the special registers so
Special registers
CHAPTER 3 CPU FUNCTION
User’s Manual U16543EJ4V0UD