R5F61663RN50FPV Renesas Electronics America, R5F61663RN50FPV Datasheet - Page 892
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
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
R5F61663RN50FPV
Manufacturer:
Renesas Electronics America
Quantity:
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Section 18 Watchdog Timer (WDT)
Note:
Rev. 2.00 Sep. 24, 2008 Page 858 of 1468
REJ09B0412-0200
Bit
7
6
5
4, 3
2
1
0
*
Bit Name
OVF
WT/IT
TME
CKS2
CKS1
CKS0
Only 0 can be written to this bit, to clear the flag.
Initial
Value
0
0
0
All 1
0
0
0
R/W
R/(W)* Overflow Flag
R/W
R/W
R
R/W
R/W
R/W
Description
Indicates that TCNT has overflowed in interval timer
mode. Only 0 can be written to this bit, to clear the flag.
[Setting condition]
When TCNT overflows in interval timer mode (changes
from H'FF to H'00)
When internal reset request generation is selected in
watchdog timer mode, OVF is cleared automatically by
the internal reset.
[Clearing condition]
Cleared by reading TCSR when OVF = 1, then writing 0
to OVF
(When the CPU is used to clear this flag while the
corresponding interrupt is enabled, be sure to read the
flag after writing 0 to it.)
Timer Mode Select
Selects whether the WDT is used as a watchdog timer or
interval timer.
0: Interval timer mode
1: Watchdog timer mode
Timer Enable
When this bit is set to 1, TCNT starts counting. When this
bit is cleared, TCNT stops counting and is initialized to
H'00.
Reserved
These are read-only bits and cannot be modified.
Clock Select 2 to 0
Select the clock source to be input to TCNT. The overflow
cycle for Pφ = 20 MHz is indicated in parentheses.
000: Clock Pφ/2 (cycle: 25.6 µs)
001: Clock Pφ/64 (cycle: 819.2 µs)
010: Clock Pφ/128 (cycle: 1.6 ms)
011: Clock Pφ/512 (cycle: 6.6 ms)
100: Clock Pφ/2048 (cycle: 26.2 ms)
101: Clock Pφ/8192 (cycle: 104.9 ms)
110: Clock Pφ/32768 (cycle: 419.4 ms)
111: Clock Pφ/131072 (cycle: 1.68 s)
When TCNT overflows, an interval timer interrupt
(WOVI) is requested.
When TCNT overflows, the WDTOVF signal is output.
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