UPD70F3738GF-GAS-AX Renesas Electronics America, UPD70F3738GF-GAS-AX Datasheet - Page 884

• 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: -

<R>
26.1 Functions
1. For details about the RESF register, see 24.3 Register to Check Reset Source.
26.2 Configuration
882
The low-voltage detector (LVI) has the following functions.
• If interrupt occurrence at low-voltage detection is selected as the operation mode, the low-voltage detector
• If reset occurrence at low-voltage detection is selected as the operation mode, the low-voltage detector
• The level of the supply voltage to be detected can be changed by software.
• Interrupt or reset signal can be selected by software.
• The low-voltage detector is operable in the standby mode.
If a reset occurs when the low-voltage detector is selected to generate a reset signal, the RESF.LVIRF bit is set to
The block diagram of the low-voltage detector is shown below.
compares the supply voltage (V
when the supply voltage drops below or rises above the detection voltage.
generates an internal reset signal when the supply voltage (V
Note
μ
two steps:
three steps :
PD70F3792, 70F3793 only
V
DD
detection
CHAPTER 26 LOW-VOLTAGE DETECTOR (LVI)
selector
voltage
μ
μ
level
Figure 26-1. Block Diagram of Low-Voltage Detector
Low
PD70F3737, 70F3738
PD70F3792, 70F3793
Low voltage detection level
select register (LVIS)
DD
) and the detection voltage (V
Detected voltage
Internal bus
source (V
User’s Manual U18953EJ5V0UD
N-ch
LVI
+
−
V
)
DD
DD
) drops below the detection voltage (V
LVI
), and generates an internal interrupt signal
Low voltage detection
register (LVIM)
INTLVI
Internal reset signal
LVI
).