upd78f9211grt2-jjg-a ETC-unknow, upd78f9211grt2-jjg-a Datasheet - Page 198

• Manufacturer Part Number: upd78f9211grt2-jjg-a
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: ETC-unknow

14.1 Functions of Low-Voltage Detector
reset occurs. For details of RESF, refer to CHAPTER 12 RESET FUNCTION.
14.2 Configuration of Low-Voltage Detector
198
The low-voltage detector (LVI) has following functions.
• Compares supply voltage (V
• Detection levels (ten levels) of supply voltage can be changed by software.
• Interrupt or reset function can be selected by software.
• Operable in STOP mode.
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 in Figure 14-1.
V
DD
internal reset signal when V
Low-voltage detection
level select register (LVIS)
Figure 14-1. Block Diagram of Low-Voltage Detector
CHAPTER 14 LOW-VOLTAGE DETECTOR
DD
voltage source
DD
< V
Reference
) and detection voltage (V
LVI
.
N-ch
+
−
V
User’s Manual U16994EJ3V0UD
DD
LVI
Low-voltage detect
register (LVIM)
), and generates an internal interrupt signal or
INTLVI
Internal reset signal