DF61657CN35FTV Renesas Electronics America, DF61657CN35FTV Datasheet - Page 566

• Manufacturer Part Number: DF61657CN35FTV
• Description: IC H8SX/1657 MCU FLASH 120TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8SX/1600r

Specifications of DF61657CN35FTV

• Core Processor: H8SX
• Core Size: 32-Bit
• Speed: 35MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 82
• Program Memory Size: 768KB (768K x 8)
• Program Memory Type: FLASH
• Ram Size: 24K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 120-TQFP, 120-VQFP
• For Use With: 3DK1657 - DEV EVAL KIT FOR H8SX/1657
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Section 13 Watchdog Timer (WDT)
13.2
Table 13.1 shows the WDT pin configuration.
Table 13.1 Pin Configuration
13.3
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
13.6.1, Notes on Register Access.
• Timer counter (TCNT)
• Timer control/status register (TCSR)
• Reset control/status register (RSTCSR)
13.3.1
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.
Rev. 2.00 Jun. 28, 2007 Page 540 of 864
REJ09B0341-0200
Name
Watchdog timer overflow
Bit
Bit Name
Initial Value
R/W
Input/Output Pin
Register Descriptions
Timer Counter (TCNT)
R/W
7
0
R/W
6
0
Symbol
WDTOVF
R/W
5
0
I/O
Output
R/W
4
0
Function
Outputs a counter overflow signal in
watchdog timer mode
R/W
3
0
R/W
2
0
R/W
1
0
R/W
0
0