UPD70F3737GC-UEU-AX Renesas Electronics America, UPD70F3737GC-UEU-AX Datasheet - Page 696

• Manufacturer Part Number: UPD70F3737GC-UEU-AX
• Description: MCU 32BIT V850ES/JX3-L 100-LQFP
• Manufacturer: Renesas Electronics America
• Series: V850ES/Jx3-Lr

Specifications of UPD70F3737GC-UEU-AX

• Package / Case: *
• Voltage - Supply (vcc/vdd): 2.2 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Speed: 20MHz
• Number Of I /o: 84
• Core Processor: RISC
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Program Memory Size: 128KB (128K x 8)
• Data Converters: A/D 12x10b, D/A 2x8b
• Oscillator Type: Internal
• Peripherals: DMA, LVD, PWM, WDT
• Connectivity: CSI, EBI/EMI, I²C, UART/USART
• Core Size: 32-Bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

696
(4) Regulator protection register (REGPR)
The REGPR register is used to protect the regulator output voltage level control register 0 (REGOVL0) so that
illegal data is not written to REGOVL0. Data cannot be written to the REGOVL0 register unless enabling data
(C9H) is written to the REGPR register. Only two types of data, C9H (enabling data) and 00H (protection data),
can be written to the REGPR register. Writing any other value is prohibited. (If a value other than C9H or 00H
is written to the REGPR register, the written value is set to prohibit a write access to the REGOVL0 register,
but the operation is not guaranteed.)
This register can be read or written only in 8-bit units (accessing it in 1-bit units is prohibited).
Reset sets this register to 00H (protection data status).
• Protection data status: REGPR = 00H
• Enabling data status: REGPR = C9H
In this status, the REGOVL0 register is protected from an illegal write access. In the protection data
status, a value is not written to the REGOVL0 register even if an attempt is made to write it, and the
REGOVL0 register holds the previous value.
Be sure to set REGPR to 00H, except when changing the value of the REGOVL0 register, in order to
avoid unexpected misoperation.
In this status, a write access to the REGOVL0 register is enabled.
• Transition from normal mode → low-voltage STOP mode
• Transition of subclock operation mode → low-voltage subclock operation mode
• Transition of subclock operation mode → low-voltage sub-IDLE mode
See 21.8.1 Setting and operation status.
See 21.6.1 Setting and operation status.
See 21.7.1 Setting and operation status.
REGPR
After reset: 00H
PR7
R/W
PR6
CHAPTER 21 STANDBY FUNCTION
Preliminary User’s Manual U18953EJ1V0UD
Address: FFFFF331H
PR5
PR4
PR3
PR2
PR1
PR0