UPD78F0550MA-FAA-AX Renesas Electronics America, UPD78F0550MA-FAA-AX Datasheet - Page 643

• 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: -

Checking reset source
Operation example 2: When used as interrupt
Remark If bit 2 (LVISEL) of the low voltage detection register (LVIM) is set to “1”, the meanings of the above
<Action>
“supply voltage (V
routine of the LVI interrupt by using bit 0 (LVIF) of the low-voltage detection register (LVIM). Clear bit 1 (LVIIF)
of interrupt request flag register 0L (IF0L) to 0.
action after waiting for the supply voltage fluctuation time.
For a system with a long supply voltage fluctuation period near the LVI detection voltage, take the above
Confirm that “supply voltage (V
Interrupt requests may be generated frequently.
Take the following action.
words change as follows.
Supply voltage (V
Detection voltage (V
Figure 22-11. Example of Software Processing After Reset Release (2/2)
DD
) < LVI detection voltage (V
Reset processing by
low-voltage detector
DD
Check reset source
WDTRF of RESF
LVIRF of RESF
)
LVI
register = 1?
register = 1?
CHAPTER 22 LOW-VOLTAGE DETECTOR
)
DD
Preliminary User’s Manual U19111EJ2V1UD
)
Input voltage from external input pin (EXLVI)
Detection voltage (V
No
Yes
LVI detection voltage (V
LVI
Yes
No
)” when detecting the rising edge of V
EXLVI
Power-on-clear/external
Reset processing by
reset generated
watchdog timer
= 1.21 V)
LVI
)” when detecting the falling edge of V
DD
, in the servicing
DD
643
, or