upd78f0103hmca1-5a4-a Renesas Electronics Corporation., upd78f0103hmca1-5a4-a Datasheet - Page 320
upd78f0103hmca1-5a4-a
Manufacturer Part Number
upd78f0103hmca1-5a4-a
Description
8-bit Single-chip Microcontrollers
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD78F0103HMCA1-5A4-A.pdf
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19.1 Functions of Low-Voltage Detector
reset occurs. For details of RESF, see CHAPTER 16 RESET FUNCTION.
19.2 Configuration of Low-Voltage Detector
320
The low-voltage detector (LVI) has following functions.
• Compares supply voltage (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.
When the low-voltage detector is used to reset, bit 0 (LVIRF) of the reset control flag register (RESF) is set to 1 if
A block diagram of the low-voltage detector is shown below.
V
internal reset signal when V
DD
Low-voltage detection level
selection register (LVIS)
Figure 19-1. Block Diagram of Low-Voltage Detector
CHAPTER 19 LOW-VOLTAGE DETECTOR
DD
DD
< V
Reference
) and detection voltage (V
voltage
source
LVI
.
N-ch
Internal bus
+
−
User’s Manual U16846EJ3V0UD
V
DD
LVI
Low-voltage detection register
(LVIM)
), and generates an internal interrupt signal or
INTLVI
Internal reset signal
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