UPD78F0838 Renesas Electronics Corporation., UPD78F0838 Datasheet - Page 790

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

788
Supply voltage (V
V
Internalreset signal
Notes 1.
Remark <1> to <7> in Figure 24-5 above correspond to <1> to <7> in the description of “When starting
POC
(set by software)
POC reset signal
(1) In 1.59 V POC mode setup (option byte: LVISTART = 0)
(set by software)
(set by software)
(set by software
LVI reset signal
LVIRF flag
= 1.59 V (TYP.)
LVISEL flag
LVIMD flag
LVIMK flag
LVION flag
2.
3.
LVIF flag
operation” in 24.4.1 (1) When detecting level of supply voltage (V
The LVIMK flag is set to “1” by reset signal generation.
The LVIF flag may be set (1).
LVIRF is bit 0 of the reset control flag register (RESF). For details of RESF, see CHAPTER 21
RESET FUNCTION.
V
Note 3
DD
LVI
Figure 24-5. Timing of Low-Voltage Detector Internal Reset Signal Generation
)
H
L
Note1
<2>
Note2
<1>
<4>
<6>
(Detects Level of Supply Voltage (V
<7>
<5>Wait time
CHAPTER 24 LOW-VOLTAGE DETECTOR
<3>
Preliminary User’s Manual U19748EJ1V0UD
Not cleared
Not cleared
Cleared by
software
Not cleared
Not cleared
Cleared by
software
DD
)) (1/2)
DD
).
Clear
Clear
Clear
Time