upd70f3402 Renesas Electronics Corporation., upd70f3402 Datasheet - Page 70

• Manufacturer Part Number: upd70f3402
• Description: 32-/16-bit Single-chip Microcontroller With Can Interface
• Manufacturer: Renesas Electronics Corporation.

3.2.3 Special registers
Special registers are registers that are protected from being written with illegal data due to a program
hang-up.
The V850E/RS1 has the following special registers.
In addition, a command register (PRCMD) is provided to protect against a write access to the special
registers so 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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• Power save control register (PSC)
• Clock control register (CKC)
• Main peripheral clock control register (MPCCTL)
• Processor clock control register (PCC)
• Clock monitor mode register (CLM)
• Reset control flag register (RESF)
• Low-voltage detection register (LVIM)
• Internal RAM data status register (RAMS)
• On-chip debug mode setting register (OCDM)
User’s Manual U16702EE3V2UD00
Chapter 3 CPU Function