R5F61663RN50FPV Renesas Electronics America, R5F61663RN50FPV Datasheet - Page 144
R5F61663RN50FPV
Manufacturer Part Number
R5F61663RN50FPV
Description
MCU FLASH 384K ROM 144-LQFP
Manufacturer
Renesas Electronics America
Series
H8® H8SX/1600r
Specifications of R5F61663RN50FPV
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
384KB (384K 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
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
R5F61663RN50FPV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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Section 5 Voltage Detection Circuit (LVD)
5.3.2
Figure 5.3 shows the timing of a voltage monitoring interrupt by the voltage-detection circuit.
When Vcc falls below the Vdet in a state where the LVDE and LVDRI bits in LVDCR are both
set to 1, the LVDF bit is set to 1 and a voltage monitoring interrupt is requested.
The voltage monitoring interrupt signal is internally connected to IRQ14-B, so the IRQ14F bit in
the ISR is set to 1 when the interrupt is generated.
As for the IRQ14 setting, set both the ITS14 bit in PFCRB and the IRQ14E bit in the IER to 1, and
the IRQ14SR and IRQ14SF bits in the ISCR to 01 (interrupt request on falling edge).
Figure 5.4 shows the procedure for setting the voltage-monitoring interrupt.
Rev. 2.00 Sep. 24, 2008 Page 110 of 1468
REJ09B0412-0200
Voltage-monitoring
interrupt signal
(IRQ14)
Voltage Monitoring Interrupt
Voltage-monitoring
signal
IRQ14F
Figure 5.3 Timing of the Voltage-Monitoring Interrupt
LVDRI
LVDE
LVDF
Vcc
↓Write 1
↓Write 1
Vdet
Vpor
Set
Stabilization time (t
Set
POR
)
Write 0 after
reading as 1
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