UPD78F0550MA-FAA-AX Renesas Electronics America, UPD78F0550MA-FAA-AX Datasheet - Page 616

• 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: -

21.1 Functions of Power-on-Clear Circuit
616
The power-on-clear circuit (POC) is mounted onto all 78K0/Kx2-L microcontroller products.
The power-on-clear circuit has the following functions.
The reset signal is released when the supply voltage (V
Caution If an internal reset signal is generated in the POC circuit, the reset control flag register (RESF)
Remark The 78K0/Kx2-L microcontrollers incorporate multiple hardware functions that generate an internal
Generates internal reset signal at power on.
Caution If the LVI default function enabled is set by using an option byte, the reset signal is not
Compares supply voltage (V
signal when V
Note
0.09 V
These are preliminary values and subject to change.
Note
released until the supply voltage (V
).
is cleared to 00H.
reset signal. A flag that indicates the reset source is located in the reset control flag register (RESF)
for when an internal reset signal is generated by the watchdog timer (WDT) and low-voltage-detector
(LVI). RESF is not cleared to 00H and the flag is set to 1 when an internal reset signal is generated
by WDT or LVI. For details of RESF, refer to CHAPTER 20 RESET FUNCTION.
DD
< V
PDR
.
CHAPTER 21 POWER-ON-CLEAR CIRCUIT
DD
) and POC detection voltage (V
Preliminary User’s Manual U19111EJ2V1UD
DD
) exceeds 1.91 V 0.1 V
DD
) exceeds POC detection voltage (V
PDR
= 1.59 V 0.09 V
Note
.
Note
), generates internal reset
POR
= 1.61 V