UPD78F0550MA-FAA-AX Renesas Electronics America, UPD78F0550MA-FAA-AX Datasheet - Page 626

• Manufacturer Part Number: UPD78F0550MA-FAA-AX
• Description: MCU 8BIT 16-SSOP
• Manufacturer: Renesas Electronics America
• Series: 78K0/Kx2-Lr

Specifications of UPD78F0550MA-FAA-AX

• Package / Case: *
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Speed: 10MHz
• Number Of I /o: 12
• Core Processor: 78K/0
• Program Memory Type: FLASH
• Ram Size: 384 x 8
• Program Memory Size: 4KB (4K x 8)
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Peripherals: LVD, POR, PWM, WDT
• Connectivity: I²C, LIN, UART/USART
• Core Size: 8-Bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

<R>
<R>
(2) Low-voltage detection level select register (LVIS)
626
Address: FFBFH
Symbol
Notes 1. The reset value changes depending on the reset source.
Cautions 1. Be sure to clear bits 4 to 7 to 0.
This register selects the low-voltage detection level.
This register can be set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation input sets this register to 00H.
LVIS
2. These are preliminary values and subject to change.
2. Do not change the value of LVIS during LVI operation.
3. When an input voltage from the external input pin (EXLVI) is detected, the detection voltage
If the LVIS register is reset by LVI, it is not reset but holds the current value. The value of this register
is reset to “00H” if a reset other than by LVI is effected.
Furthermore, if the power is turned on when the default LVI start is set, the LVIS register value
becomes “0FH”.
LVIS3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
7
0
(V
Figure 22-3. Format of Low-Voltage Detection Level Select Register (LVIS)
EXLVI
After reset: 00H
= 1.21 V (TYP.)) is fixed. Therefore, setting of LVIS is not necessary.
LVIS2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
6
0
Note 1
CHAPTER 22 LOW-VOLTAGE DETECTOR
LVIS1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
5
0
Preliminary User’s Manual U19111EJ2V1UD
R/W
LVIS0
4
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
LVI0
LVI1
LVI2
LVI3
LVI4
LVI5
LVI6
LVI7
LVI8
LVI9
LVI10
LVI11
LVI12
LVI13
LVI14
LVI15
LVIS3
3
(4.22 0.1 V)
(4.07 0.1 V)
(3.92 0.1 V)
(3.76 0.1 V)
(3.61 0.1 V)
(3.45 0.1 V)
(3.30 0.1 V)
(3.15 0.1 V)
(2.99 0.1 V)
(2.84 0.1 V)
(2.68 0.1 V)
(2.53 0.1 V)
(2.38 0.1 V)
(2.22 0.1 V)
(2.07 0.07 V)
(1.91 0.1 V)
LVIS2
Detection level
2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
LVIS1
1
LVIS0
0