UPD78F0890GK(A)-GAJ-AX NEC, UPD78F0890GK(A)-GAJ-AX Datasheet - Page 586

• Manufacturer Part Number: UPD78F0890GK(A)-GAJ-AX
• Description: 8BIT MCU, 128K FLASH, 7K RAM, LQFP
• Manufacturer: NEC

Specifications of UPD78F0890GK(A)-GAJ-AX

• Controller Family/series: UPD78F
• No. Of I/o's: 55
• Ram Memory Size: 7KB
• Cpu Speed: 20MHz
• No. Of Timers: 10
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 128KB
• Oscillator Type: External, Internal

586
external input pin (EXLVI)
Notes 1.
Remark <1> to <6> in Figure 22-6 above correspond to <1> to <6> in the description of “When starting
LVI detection voltage
Internal reset signal
Input voltage from
(set by software)
(set by software)
(set by software)
(set by software)
LVI reset signal
LVIRF flag
2.
3.
LVISEL flag
LVIMD flag
LVIMK flag
LVION flag
operation” in 22.4.1 (2) When detecting level of input voltage from external input pin (EXLVI).
LVIF flag
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 19
RESET FUNCTION.
(V
Figure 22-6. Timing of Low-Voltage Detector Internal Reset Signal Generation
EXLVI
Note 3
)
(Detects Level of Input Voltage from External Input Pin (EXLVI))
H
Note 1
<1>
<2>
Note 2
<3>
CHAPTER 22 LOW-VOLTAGE DETECTOR
<5>
<6>
<4> Wait time
User’s Manual U17554EJ4V0UD
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Cleared by
software
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Cleared by
software
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Time