UPD78F0890GK(A)-GAJ-AX NEC, UPD78F0890GK(A)-GAJ-AX Datasheet - Page 583

• 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

Supply voltage (V
V
Internalreset signal
Notes 1.
Remark <1> to <7> in Figure 22-5 above correspond to <1> to <7> in the description of “When starting
POC
(1) In 1.59 V POC mode setup (option byte: LVISTART = 0)
(set by software)
POC reset signal
(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 22.4.1 (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 19
RESET FUNCTION.
V
Note 3
DD
Figure 22-5. Timing of Low-Voltage Detector Internal Reset Signal Generation
LVI
)
H
L
Note1
<2>
Note2
<1>
<4>
<6>
(Detects Level of Supply Voltage (V
<7>
<5>Wait time
CHAPTER 22 LOW-VOLTAGE DETECTOR
<3>
Not cleared
Not cleared
User’s Manual U17554EJ4V0UD
Cleared by
software
Not cleared
Not cleared
Cleared by
software
DD
)) (1/2)
DD
).
Clear
Clear
Clear
Time
583