UPD78F0838 Renesas Electronics Corporation., UPD78F0838 Datasheet - Page 798

• Manufacturer Part Number: UPD78F0838
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

796
external input pin (EXLVI)
Notes 1.
Remark <1> to <8> in Figure 24-8 above correspond to <1> to <8> in the description of “When starting
Input voltage from
(set by software)
(set by software)
(set by software)
(set by software) L
2.
3.
LVISEL flag
LVIMK flag
LVIMD flag
LVION flag
operation” in 24.4.2 (2) When detecting level of input voltage from external input pin (EXLVI).
LVIIF flag
LVIF flag
The LVIMK flag is set to “1” by reset signal generation.
The interrupt request signal (INTLVI) is generated and the LVIF and LVIIF flags may be set (1).
If LVION is cleared (0) in state below the LVI detection voltage, an INTLVI signal is generated and
LVIIF becomes 1.
INTLVI
V
EXLVI
Figure 24-8. Timing of Low-Voltage Detector Interrupt Signal Generation
(Detects Level of Input Voltage from External Input Pin (EXLVI))
<2>
Note 2
Note 2
Note 2
<1>
Note 1
<3>
CHAPTER 24 LOW-VOLTAGE DETECTOR
<6>
Cleared by software
<7> Cleared by software
<5>
<8>
<4> Wait time
Preliminary User’s Manual U19748EJ1V0UD
Note 3
Note 3
Time