UPD78F0555MA-FAA-AX Renesas Electronics America, UPD78F0555MA-FAA-AX Datasheet - Page 702

• Manufacturer Part Number: UPD78F0555MA-FAA-AX
• Description: MCU 8BIT 16-SSOP
• Manufacturer: Renesas Electronics America
• Series: 78K0/Kx2-Lr

Specifications of UPD78F0555MA-FAA-AX

• Core Processor: 78K/0
• Core Size: 8-Bit
• Speed: 10MHz
• Connectivity: I²C, LIN, UART/USART
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 9
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: FLASH
• Ram Size: 384 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

78K0/Kx2-L
22.5 Cautions for Low-Voltage Detector
(V
R01UH0028EJ0400 Rev.4.00
Sep 27, 2010
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 words
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 software
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.
change as follows.
• Supply voltage (V
• Detection voltage (V
DD
)
LVI
) → Detection voltage (V
→ Input voltage from external input pin (EXLVI)
DD
) fluctuates for a certain period in the vicinity of the LVI detection voltage
EXLVI
= 1.21 V)
CHAPTER 22 LOW-VOLTAGE DETECTOR
688