R5F61665N50FPV Renesas Electronics America, R5F61665N50FPV Datasheet - Page 139

• Manufacturer Part Number: R5F61665N50FPV
• Description: MCU FLASH 512K ROM 144-LQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8SX/1600r

Specifications of R5F61665N50FPV

• Core Processor: H8SX
• Core Size: 16/32-Bit
• Speed: 50MHz
• Connectivity: EBI/EMI, I²C, IrDA, SCI, SmartCard, USB
• Peripherals: DMA, LVD, POR, PWM, WDT
• Number Of I /o: 92
• Program Memory Size: 512KB (512K x 8)
• Program Memory Type: FLASH
• Ram Size: 40K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 144-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

5.3
5.3.1
Figure 5.2 shows the timing of a voltage monitoring reset by the voltage-detection circuit.
When Vcc falls below Vdet in the state where the LVDE bit in LVDCR has been set to 1 and the
LVDRI bit has been cleared to 0, the LVDF bit is set to 1 and the voltage-detection circuit
generates a voltage monitoring reset.
Next, after Vcc has risen above Vdet, release from the voltage-monitoring reset takes place after a
period for stabilization (t
by the voltage detection circuit in order to stabilize the Vcc and the internal circuit of the LSI.
When a voltage-monitoring reset is generated, the LVDF bit is set to 1.
For details, see section 30, Electrical Characteristics.
Voltage Detection Circuit
Voltage Monitoring Reset
Vcc
LVDE
LVDRI
Internal
reset signal
(Low)
Figure 5.2 Timing of the Voltage-Monitoring Reset
por
) has elapsed. The period for stabilization (t
↓Write 0
↓Write 1
Vdet
Vpor
Rev. 2.00 Oct. 21, 2009 Page 105 of 1454
Section 5 Voltage Detection Circuit (LVD)
Stabilization time (t
por
) is a time that is generated
POR
)
REJ09B0498-0200