UPD78F0550MA-FAA-AX Renesas Electronics America, UPD78F0550MA-FAA-AX Datasheet - Page 641

• 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: -

22.5 Cautions for Low-Voltage Detector
(V
LVI
In a system where the supply voltage (V
Operation example 1: When used as reset
<Action>
Remark If bit 2 (LVISEL) of the low voltage detection register (LVIM) is set to “1”, the meanings of the above
software counter that uses a timer, and then initialize the ports (refer to Figure 22-11).
), the operation is as follows depending on how the low-voltage detector is used.
After releasing the reset signal, wait for the supply voltage fluctuation period of each system by means of a
The system may be repeatedly reset and released from the reset status.
The time from reset release through microcontroller operation start can be set arbitrarily by the following
action.
words change as follows.
Supply voltage (V
Detection voltage (V
DD
)
LVI
)
CHAPTER 22 LOW-VOLTAGE DETECTOR
Preliminary User’s Manual U19111EJ2V1UD
Input voltage from external input pin (EXLVI)
Detection voltage (V
DD
) fluctuates for a certain period in the vicinity of the LVI detection voltage
EXLVI
= 1.21 V)
641