UPD78F1506GF-GAT-AX Renesas Electronics America, UPD78F1506GF-GAT-AX Datasheet - Page 809

• Manufacturer Part Number: UPD78F1506GF-GAT-AX
• Description: MCU 16BIT 78K0R/LX3 128-LQFP
• Manufacturer: Renesas Electronics America
• Series: 78K0R/Lx3r

Specifications of UPD78F1506GF-GAT-AX

• Core Processor: 78K/0R
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: 3-Wire SIO, I²C, LIN, UART/USART
• Peripherals: DMA, LCD, LVD, POR, PWM, WDT
• Number Of I /o: 78
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 12x12b, D/A 2x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

78K0R/Lx3
24.1 Functions of Low-Voltage Detector
more than or less than the detection level can be checked by reading the low-voltage detection flag (LVIF: bit 0 of LVIM).
occurs. For details of RESF, see CHAPTER 22 RESET FUNCTION.
R01UH0004EJ0401 Rev.4.01
Jul 2, 2010
Selects reset (LVIMD = 1).
Generates an internal reset
signal when V
releases the reset signal when
V
DD
The low-voltage detector (LVI) is mounted onto all 78K0R/Lx3 microcontroller products.
The low-voltage detector has the following functions.
• The LVI circuit compares the supply voltage (V
• The low-voltage detector (LVI) can be set to ON by an option byte by default. If it is set to ON to raise the power
• The supply voltage (V
• A reset or an interrupt can be selected to be generated after detection by software.
• Detection levels (V
• Operable in STOP mode.
The reset and interrupt signals are generated as follows depending on selection by software.
Remark LVISEL: Bit 2 of low-voltage detection register (LVIM)
While the low-voltage detector is operating, whether the supply voltage or the input voltage from an external input pin is
When the low-voltage detector is used to reset, bit 0 (LVIRF) of the reset control flag register (RESF) is set to 1 if reset
≥ V
external input pin (EXLVI) with the detection voltage (V
internal interrupt signal.
supply from the POC detection voltage (V
the supply voltage (V
generated when the supply voltage (V
software.
Note
Selection of Level Detection of Supply Voltage (V
LVI
.
DD
This is a preliminary value and subject to change.
LVIMD: Bit 1 of LVIM
< V
LVI
and
(LVISEL = 0)
LVI
,16 levels) of supply voltage can be changed by software.
DD
DD
) or the input voltage from the external input pin (EXLVI) can be selected to be detected by
Selects interrupt (LVIMD = 0).
Generates an internal interrupt
signal when V
than V
V
(V
) < detection voltage (V
DD
DD
becomes V
≥ V
CHAPTER 24 LOW-VOLTAGE DETECTOR
LVI
LVI
(V
).
DD
DD
< V
DD
LVI
drops lower
LVI
) < detection voltage (V
or higher
) or when
POR
DD
)
= 1.61 V (TYP.)) or lower, the internal reset signal is generated when
DD
LVI
) with the detection voltage (V
= 2.07 V ±0.2 V
Selects reset (LVIMD = 1).
Generates an internal reset
signal when EXLVI < V
and releases the reset signal
when EXLVI ≥ V
EXLVI
= 1.21 V ±0.1 V
Selection Level Detection of Input Voltage from
LVI
External Input Pin (EXLVI) (LVISEL = 1)
CHAPTER 24 LOW-VOLTAGE DETECTOR
= 2.07 V ±0.1 V
EXLVI
Note
.
). After that, the internal reset signal is
EXLVI
Note
), and generates an internal reset or
Note
LVI
Selects interrupt (LVIMD = 0).
Generates an internal interrupt
signal when EXLVI drops
lower than V
V
becomes V
(EXLVI ≥ V
).
EXLVI
) or the input voltage from an
) or when EXLVI
EXLVI
EXLVI
EXLVI
).
or higher
(EXLVI <
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