UPD78F0537DGA(T)-9EV-A NEC, UPD78F0537DGA(T)-9EV-A Datasheet - Page 557

• Manufacturer Part Number: UPD78F0537DGA(T)-9EV-A
• Description: 8BIT MCU, 128K FLASH, 7KB RAM, SMD
• Manufacturer: NEC

Specifications of UPD78F0537DGA(T)-9EV-A

• Controller Family/series: UPD78
• No. Of I/o's: 55
• Ram Memory Size: 7KB
• Cpu Speed: 20MHz
• No. Of Timers: 8
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 128KB
• Oscillator Type: External, Internal

<R>
(1) In 1.59 V POC mode (option byte: POCMODE = 0)
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
(set by software)
(set by software)
(set by software)
(set by software) L
= 1.59 V (TYP.)
LVISEL flag
LVIMK flag
LVIMD flag
LVION 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 a 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
Note 3
User’s Manual U17260EJ6V0UD
Note 3
DD
)) (1/2)
DD
).
Time
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