UPD78F9502MA-CAC-A NEC, UPD78F9502MA-CAC-A Datasheet - Page 123

• Manufacturer Part Number: UPD78F9502MA-CAC-A
• Description: 8BIT MCU, 4K FLASH, 128B RAM, SMD
• Manufacturer: NEC

Specifications of UPD78F9502MA-CAC-A

• Controller Family/series: UPD78F
• No. Of I/o's: 8
• Ram Memory Size: 128Byte
• Cpu Speed: 10MHz
• No. Of Timers: 2
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 4KB
• Oscillator Type: External, Internal

12.1 Functions of Low-Voltage Detector
reset occurs. For details of RESF, refer to CHAPTER 10 RESET FUNCTION.
12.2 Configuration of Low-Voltage Detector
The low-voltage detector (LVI) has 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 in Figure 12-1.
V
DD
Compares supply voltage (V
internal reset signal when 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.
Low-voltage detection
level select register (LVIS)
Figure 12-1. Block Diagram of Low-Voltage Detector
CHAPTER 12 LOW-VOLTAGE DETECTOR
DD
voltage source
DD
< V
Reference
) and detection voltage (V
LVI
Preliminary User’s Manual U18681EJ1V0UD
.
N-ch
V
DD
LVI
Low-voltage detect
register (LVIM)
), and generates an internal interrupt signal or
INTLVI
Internal reset signal
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