UPD78F0138 NEC, UPD78F0138 Datasheet - Page 419
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UPD78F0138
Manufacturer Part Number
UPD78F0138
Description
(UPD78xxxx) 8-Bit Single-Chip Microcontrollers
Manufacturer
NEC
Datasheet
1.UPD78F0138.pdf
(558 pages)
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POC detection voltage
LVI detection voltage
Supply voltage (V
Internal reset signal
Notes 1.
Remark <1> to <9> in Figure 23-5 above correspond to <1> to <9> in the description of “when starting operation”
(set by software)
(set by software)
(set by software)
LVIMK flag
LVION flag
2.
LVIIF flag
LVIE flag
LVIF flag
in 23.4 (2) When used as interrupt.
INTLVI
(V
The LVIMK flag is set to “1” by RESET input.
The LVIF and LVIIF flags may be set (1).
2.7 V
(V
POC
DD
LVI
)
)
)
Figure 23-5. Timing of Low-Voltage Detector Interrupt Signal Generation
<2>
<1>
Note 2
Note 2
Note 1
<3>
<5>
<7>
<9> Cleared by software
<4> 2 ms or longer
<8>
Cleared by software
CHAPTER 23 LOW-VOLTAGE DETECTOR
<6> 0.2 ms or longer
User’s Manual U16228EJ2V0UD
Time
419
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