upd78f0114hgb-8es-a Renesas Electronics Corporation., upd78f0114hgb-8es-a Datasheet - Page 366

• Manufacturer Part Number: upd78f0114hgb-8es-a
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

21.1 Functions of Low-Voltage Detector
reset occurs. For details of RESF, refer to CHAPTER 18 RESET FUNCTION.
21.2 Configuration of Low-Voltage Detector
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The low-voltage detector (LVI) has the following functions.
When the low-voltage detector is used to reset, bit 0 (LVIRF) of the reset control flag register (RESF) is set to 1 if
The block diagram of the low-voltage detector is shown below.
V
Compares supply voltage (V
internal reset signal when V
Detection levels (nine levels) of supply voltage can be changed by software.
Interrupt or reset function can be selected by software.
Operable in STOP mode.
DD
Low-voltage detection level
selection register (LVIS)
Figure 21-1. Block Diagram of Low-Voltage Detector
CHAPTER 21 LOW-VOLTAGE DETECTOR
DD
DD
< V
) and detection voltage (V
Reference
voltage
source
LVI
.
N-ch
Internal bus
+
User’s Manual U16961EJ4V0UD
V
DD
LVI
Low-voltage detection register
(LVIM)
), and generates an internal interrupt signal or
INTLVI
Internal reset signal