UPD78F0550MA-FAA-AX Renesas Electronics America, UPD78F0550MA-FAA-AX Datasheet - Page 617

• 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: -

21.2 Configuration of Power-on-Clear Circuit
21.3 Operation of Power-on-Clear Circuit
The block diagram of the power-on-clear circuit is shown in Figure 21-1.
The timing of generation of the internal reset signal by the power-on-clear circuit and low-voltage detector is
shown below.
Caution If the LVI default function enabled is set by using an option byte, the reset signal is not
Note
detection voltage (V
The supply voltage (V
An internal reset signal is generated on power application. When the supply voltage (V
V
PDR
, the internal reset signal is generated.
These are preliminary values and subject to change.
released until the supply voltage (V
V
DD
POR
DD
Figure 21-1. Block Diagram of Power-on-Clear Circuit
= 1.61 V 0.09 V
) and POC detection voltage (V
Reference
voltage
source
CHAPTER 21 POWER-ON-CLEAR CIRCUIT
Preliminary User’s Manual U19111EJ2V1UD
Note
), the reset status is released.
+
V
DD
DD
) exceeds 1.91 V 0.1 V
PDR
= 1.59 V 0.09 V
Internal reset signal
Note
.
Note
) are compared. When V
DD
) exceeds POC
DD
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