UPD70F3714GC-8BS-A Renesas Electronics America, UPD70F3714GC-8BS-A Datasheet - Page 58

• Manufacturer Part Number: UPD70F3714GC-8BS-A
• Description: MCU 32BIT V850ES/LX2 64-LQFP
• Manufacturer: Renesas Electronics America
• Series: V850ES/Ix2r

Specifications of UPD70F3714GC-8BS-A

• Core Processor: RISC
• Core Size: 32-Bit
• Speed: 20MHz
• Connectivity: CSI, UART/USART
• Peripherals: LVD, PWM, WDT
• Number Of I /o: 39
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 6K x 8
• Voltage - Supply (vcc/vdd): 3.5 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

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3.4.7
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.
56
Special registers are registers that are protected from being written with illegal data due to a program hang-up.
The V850ES/IE2 has the following seven special registers divided into two types.
[Special registers subject to error report by SYS.PRERR bit]
• Power save control register (PSC)
• Clock control register (CKC)
• Processor clock control register (PCC)
• Clock monitor mode register (CLM)
• Reset source flag register (RESF)
[Special registers subject to error report by SYS.PRERR2 bit]
• Low-voltage detection register (LVIM)
• Internal RAM data status register (RAMS)
In addition, a command register is provided to protect against a write access to the special registers so that the
Caution When writing to any of the above five special registers, use command register PRCMD.
Caution When writing to either of the above two special registers, use command register PRCMD2.
Special registers
CHAPTER 3 CPU FUNCTION
User’s Manual U17716EJ2V0UD