UPD78F0838 Renesas Electronics Corporation., UPD78F0838 Datasheet - Page 795

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

Supply voltage (V
Internal reset signal
V
Notes 1.
Remark <1> to <9> in Figure 24-7 above correspond to <1> to <9> in the description of “When starting
POC
(1) In 1.59 V POC mode setup (option byte: LVISTART = 0)
(set by software)
(set by software)
(set by software)
(set by software) L
= 1.59 V (TYP.)
LVISEL flag
LVIMK flag
LVION flag
LVIMD flag
2.
3.
LVIIF flag
LVIF flag
INTLVI
operation” in 24.4.2 (1) When detecting level of supply voltage (V
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.
V
DD
LVI
)
Figure 24-7. Timing of Low-Voltage Detector Interrupt Signal Generation
L
<2>
<1>
Note 1
Note 2
Note 2
Note 2
<4>
(Detects Level of Supply Voltage (V
<7>
Cleared by software
<6>
<8> Cleared by software
<3>
<9>
CHAPTER 24 LOW-VOLTAGE DETECTOR
<5> Wait time
Preliminary User’s Manual U19748EJ1V0UD
Note 3
Note 3
DD
)) (1/2)
DD
).
Time
793