UPD70F3738GF-GAS-AX Renesas Electronics America, UPD70F3738GF-GAS-AX Datasheet - Page 833

• Manufacturer Part Number: UPD70F3738GF-GAS-AX
• Description: MCU 32BIT V850ES/JX3-L 100-LQFP
• Manufacturer: Renesas Electronics America
• Series: V850ES/Jx3-Lr

Specifications of UPD70F3738GF-GAS-AX

• Core Processor: RISC
• Core Size: 32-Bit
• Speed: 20MHz
• Connectivity: CSI, EBI/EMI, I²C, UART/USART
• Peripherals: DMA, LVD, PWM, WDT
• Number Of I /o: 84
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 2.2 V ~ 3.6 V
• Data Converters: A/D 12x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

(5) Regulator output voltage level control register 0 (REGOVL0)
This register is used to select the low-voltage STOP mode, low-voltage subclock operation mode, or low-
voltage sub-IDLE mode. The power consumption can be reduced by lowering the output voltage of the
regulator.
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.
This register must be always written in pairs with the regulator protection register (REGPR).
• Write operation of REGOVL0 register
• Read operation of REGOVL0 register
Note • Transition from normal mode → low-voltage STOP mode
Caution Be sure to stop the main clock and PLL when setting the low-voltage subclock mode and
Writing the REGOVL0 register is enabled only when C9H is written to the REGPR register (see 23.2 (4)
Regulator protection register (REGPR)).
This register can be set only to 00H, 01H, and 02H.
Setting 03H is prohibited. If 03H is set, the operation is not guaranteed.
The default value of the REGOVL0 register is 00H. After a value has been written to this register in the
correct procedure
• Transition of subclock operation mode → low-voltage subclock operation mode
• Transition of subclock operation mode → low-voltage sub-IDLE mode
REGOVL0
See 23.6.1 Setting and operation status.
See 23.7.1 Setting and operation status.
See 23.8.1 Setting and operation status.
low-voltage sub-IDLE mode.
After reset: 00H
SUBMD
STPMD
Note
, the written value is read. The procedure for reading this register is not restricted.
0
1
0
1
0
Output mode selection of regulator in subclock operation mode/sub-IDLE mode
Subclock operation mode/sub-IDLE mode
Low-voltage subclock operation mode/low-voltage sub-IDLE mode
STOP mode
Low-voltage STOP mode
R/W
0
CHAPTER 23 STANDBY FUNCTION
Address: FFFFF332H
User’s Manual U18953EJ5V0UD
Output mode selection of regulator in STOP mode
0
0
0
0
SUBMD
STPMD
831