UPD78F0551MA-FAA-AX Renesas Electronics America, UPD78F0551MA-FAA-AX Datasheet - Page 680

• Manufacturer Part Number: UPD78F0551MA-FAA-AX
• Description: MCU 8BIT 16-SSOP
• Manufacturer: Renesas Electronics America
• Series: 78K0/Kx2-Lr

Specifications of UPD78F0551MA-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: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 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
21.2 Configuration of Power-on-Clear Circuit
21.3 Operation of Power-on-Clear Circuit
R01UH0028EJ0400 Rev.4.00
Sep 27, 2010
The block diagram of the power-on-clear circuit is shown in Figure 21-1.
• An internal reset signal is generated on power application. When the supply voltage (V
• The supply voltage (V
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 released
voltage (V
internal reset signal is generated.
until the supply voltage (V
POR
= 1.61 V ±0.09 V), the reset status is released.
V
DD
DD
) and POC detection voltage (V
Figure 21-1. Block Diagram of Power-on-Clear Circuit
Reference
voltage
source
DD
) exceeds 1.91 V ±0.1 V.
+
V
DD
PDR
= 1.59 V ±0.09 V) are compared. When V
CHAPTER 21 POWER-ON-CLEAR CIRCUIT
Internal reset signal
DD
) exceeds POC detection
DD
< V
PDR
, the
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