R5F61665N50FPV Renesas Electronics America, R5F61665N50FPV Datasheet - Page 887

• 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: -

18.3
The WDT has the following three registers. To prevent accidental overwriting, TCSR, TCNT, and
RSTCSR have to be written to in a method different from normal registers. For details, see section
18.6.1, Notes on Register Access.
• Timer counter (TCNT)
• Timer control/status register (TCSR)
• Reset control/status register (RSTCSR)
18.3.1
TCNT is an 8-bit readable/writable up-counter. TCNT is initialized to H'00 when the TME bit in
TCSR is cleared to 0.
18.3.2
TCSR selects the clock source to be input to TCNT, and the timer mode.
Bit
Bit Name
Initial Value
R/W
Bit
Bit Name
Initial Value
R/W
Note:
* Only 0 can be written to this bit, to clear the flag.
Register Descriptions
Timer Counter (TCNT)
Timer Control/Status Register (TCSR)
R/(W)*
OVF
R/W
7
0
7
0
WT/IT
R/W
R/W
6
0
6
0
TME
R/W
R/W
5
0
5
0
R/W
⎯
R
4
0
4
1
R/W
⎯
R
3
0
3
1
Rev. 2.00 Oct. 21, 2009 Page 853 of 1454
Section 18 Watchdog Timer (WDT)
CKS2
R/W
R/W
2
0
2
0
CKS1
R/W
R/W
1
0
1
0
REJ09B0498-0200
CKS0
R/W
R/W
0
0
0
0