UPD78F0413GA-GAM-AX NEC, UPD78F0413GA-GAM-AX Datasheet - Page 485

• Manufacturer Part Number: UPD78F0413GA-GAM-AX
• Description: 8BIT UC, 32K FLASH, 1KB RAM, LCD
• Manufacturer: NEC

Specifications of UPD78F0413GA-GAM-AX

• Controller Family/series: UPD78F
• No. Of I/o's: 30
• Ram Memory Size: 1024Byte
• Cpu Speed: 10MHz
• No. Of Timers: 8
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 32KB
• Oscillator Type: External, Internal

22.1 Functions of Low-Voltage Detector
pin is more than or less than the detection level can be checked by reading the low-voltage detection flag (LVIF: bit 0
of LVIM).
reset occurs. For details of RESF, see CHAPTER 20 RESET FUNCTION.
Selects reset (LVIMD = 1).
Generates an internal reset
signal when V
releases the reset signal when
V
DD
The low-voltage detector (LVI) has the following functions.
The reset and interrupt signals are generated as follows depending on selection by software.
Remark LVISEL: Bit 2 of low-voltage detection register (LVIM)
While the low-voltage detector is operating, whether the supply voltage or the input voltage from an external input
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 LVI circuit compares the supply voltage (V
external input pin (EXLVI) with the detection voltage (V
reset or internal interrupt signal.
The supply voltage (V
Reset or interrupt function can be selected by software.
Detection levels (16 levels) of supply voltage can be changed by software.
Operable in STOP mode.
Selection of Level Detection of Supply Voltage (V
V
LVI
.
DD
LVIMD: Bit 1 of LVIM
< V
LVI
and
(LVISEL = 0)
DD
) or input voltage from an external input pin (EXLVI) can be selected by software.
Selects interrupt (LVIMD = 0).
Generates an internal interrupt
signal when V
than V
V
(V
DD
DD
CHAPTER 22 LOW-VOLTAGE DETECTOR
becomes V
LVI
V
LVI
(V
).
DD
DD
< V
LVI
drops lower
LVI
User’s Manual U18698EJ1V0UD
or higher
) or when
DD
)
DD
) with the detection voltage (V
Selects reset (LVIMD = 1).
Generates an internal reset
signal when EXLVI < V
and releases the reset signal
when EXLVI
EXLVI
= 1.21 V (TYP.): fixed), and generates an internal
Selection Level Detection of Input Voltage from
External Input Pin (EXLVI) (LVISEL = 1)
V
EXLVI
.
EXLVI
LVI
) or the input voltage from an
Selects interrupt (LVIMD = 0).
Generates an internal interrupt
signal when EXLVI drops
lower than V
V
becomes V
(EXLVI
EXLVI
) or when EXLVI
V
EXLVI
EXLVI
EXLVI
).
or higher
(EXLVI <
485