UPD70F3451GC-UBT-A Renesas Electronics America, UPD70F3451GC-UBT-A Datasheet - Page 1044

• Manufacturer Part Number: UPD70F3451GC-UBT-A
• Description: MCU 32BIT 128KB FLASH 80LQFP
• Manufacturer: Renesas Electronics America
• Series: V850E/Ix3r

Specifications of UPD70F3451GC-UBT-A

• Core Processor: RISC
• Core Size: 32-Bit
• Speed: 64MHz
• Connectivity: CSI, I²C, UART/USART
• Peripherals: DMA, LVD, PWM, WDT
• Number Of I /o: 44
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 3.5 V ~ 5.5 V
• Data Converters: A/D 10x12b, 4x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

<R>
23.3 Control Registers
1042
(1) Low-voltage detection register (LVIM)
The LVIM register is used to enable or disable low voltage detection, and to set the operation mode of the low-
voltage detector. The LVIM register is a special register. It can be written only by a combination of specific
sequences (see 3.4.8 Special registers).
This register can be read or written in 8-bit or 1-bit units. However, bit 0 is read-only.
Reset other than reset by the low-voltage detector (LVI) sets this register to 00H.
Cautions 1. After setting the LVION bit to 1, wait for 0.1 ms or more before checking the voltage
LVIM
After reset: 00H
2. The value of the LVIF flag is output as the output signals INTLVIL or INTLVIH when
3. If the LVION bit = 1 and LVIMD bit = 1, the low-voltage detector (LVI) cannot be
4. Be sure to set bits 2 to 6 to “0”.
LVION
LVION
LVIMD
LVIF
<7>
0
1
0
1
0
1
using the LVIF bit.
the LVION bit = 1 and LVIMD bit = 0.
stopped until a reset request other than that of by the LVI is generated.
Disable operation.
Enable operation.
Generate interrupt request signal INTLVIL when supply voltage < detection
voltage.
Generate interrupt request signal INTLVIH when supply voltage > detection
voltage.
Generate internal reset signal LVIRES when supply voltage < detection voltage.
When supply voltage > detection voltage, or when operation is disabled
Supply voltage < detection voltage
R/W
6
0
CHAPTER 23 LOW-VOLTAGE DETECTOR
Address: FFFFF890H
User’s Manual U18279EJ3V0UD
Selection of operation mode of low voltage detection
5
0
Low voltage detection operation enable or disable
Low voltage detection flag
4
0
3
0
2
0
LVIMD
<1>
LVIF
<0>