UPD78F0386GK-8EU-A Renesas Electronics America, UPD78F0386GK-8EU-A Datasheet - Page 525

• Manufacturer Part Number: UPD78F0386GK-8EU-A
• Description: MCU 96KB FLASH 5KB RAM
• Manufacturer: Renesas Electronics America
• Series: 78K0/Lx2r

Specifications of UPD78F0386GK-8EU-A

• Core Processor: 78K/0
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: 3-Wire SIO, I²C, LIN, UART/USART
• Peripherals: LCD, LVD, POR, PWM, WDT
• Number Of I /o: 26
• Program Memory Size: 96KB (96K x 8)
• Program Memory Type: FLASH
• Ram Size: 5K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -

(1) Low-voltage detection register (LVIM)
Address: FFBEH
Symbol
This register sets low-voltage detection and the operation mode.
This register can be set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation sets LVIM to 00H.
LVIM
Notes 1.
Cautions 1. To stop LVI, follow either of the procedures below.
LVION
LVISEL
LVIMD
LVIF
LVION
<7>
0
1
0
1
0
1
0
1
Notes 2, 3
Note 4
2.
3.
4.
Note 2
Note 2
After reset: 00H
2. Input voltage from external input pin (EXLVI) must be EXLVI < V
Bit 0 is read-only.
LVION, LVIMD, and LVISEL are cleared to 0 in the case of a reset other than an LVI reset.
These are not cleared to 0 in the case of an LVI reset.
When LVION is set to 1, operation of the comparator in the LVI circuit is started. Use
software to wait for an operation stabilization time (10 s (MAX.)) when LVION is set to 1 until
the voltage is confirmed at LVIF.
The value of LVIF is output as the interrupt request signal INTLVI when LVION = 1 and
LVIMD = 0.
Disables operation
Enables operation
Detects level of supply voltage (V
Detects level of input voltage from external input pin (EXLVI)
Figure 24-2. Format of Low-Voltage Detection Register (LVIM)
LVISEL = 0: Generates interrupt signal when supply voltage (V
LVISEL = 1: Generates interrupt signal when input voltage from external input pin
LVISEL = 0: Generates internal reset signal when supply voltage (V
LVISEL = 1: Generates internal reset signal when input voltage from external input pin
LVISEL = 0: Supply voltage (V
LVISEL = 1: Input voltage from external input pin (EXLVI)
LVISEL = 0: Supply voltage (V
LVISEL = 1: Input voltage from external input pin (EXLVI) < detection voltage (V
When using 8-bit memory manipulation instruction: Write 00H to LVIM.
When using 1-bit memory manipulation instruction: Clear LVION to 0.
6
0
CHAPTER 24 LOW-VOLTAGE DETECTOR
(V
(EXLVI) < detection voltage (V
voltage (V
(EXLVI) < detection voltage (V
disabled
or when operation is disabled
R/W
LVI
5
0
)
Note 1
Low-voltage detection operation mode selection
User’s Manual U17504EJ2V0UD
Enables low-voltage detection operation
LVI
)
4
0
Voltage detection selection
Low-voltage detection flag
DD
DD
DD
)
) < detection voltage (V
)
detection voltage (V
3
0
EXLVI
EXLVI
)
)
LVISEL
<2>
LVI
LVI
), or when operation is
)
detection voltage (V
DD
) < detection voltage
LVIMD
<1>
DD
) < detection
DD
.
LVIF
<0>
EXLVI
EXLVI
),
)
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