D6417729RHF200BV Renesas Electronics America, D6417729RHF200BV Datasheet - Page 309

• Manufacturer Part Number: D6417729RHF200BV
• Description: IC SUPER H MPU ROMLESS 208QFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7700r

Specifications of D6417729RHF200BV

• Core Processor: SH-3 DSP
• Core Size: 32-Bit
• Speed: 200MHz
• Connectivity: EBI/EMI, FIFO, IrDA, SCI, SmartCard
• Peripherals: DMA, POR, WDT
• Number Of I /o: 96
• Program Memory Type: ROMless
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 1.85 V ~ 2.15 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 208-QFP Exposed Pad, 208-eQFP, 208-HQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

Table 10.5 Register Configuration
Name
Watchdog timer counter
Watchdog timer
control/status register
Note: * Write with word access. Write with H'5A and H'A5, respectively, in the upper byte. Byte or
10.7
10.7.1
The watchdog timer counter (WTCNT) is an 8-bit readable/writable counter that increments on the
selected clock. WTCNT differs from other registers in that it is more difficult to write to. See
section 10.7.3, Notes on Register Access, for details. When an overflow occurs, it generates a reset
in watchdog timer mode and an interrupt in interval time mode. Its address is H'FFFFFF84. The
WTCNT counter is initialized to H'00 only by a power-on reset through the RESETP pin. Use
word access to write to the WTCNT counter, with H'5A in the upper byte. Use byte access to read
WTCNT.
10.7.2
The watchdog timer control/status register (WTCSR) is an 8-bit readable/writable register
composed of bits to select the clock used for the count, bits to select the timer mode, and overflow
flags. WTCSR differs from other registers in that it is more difficult to write to. See section 10.7.3,
Notes on Register Access, for details. Its address is H'FFFFFF86. The WTCSR register is
initialized to H'00 only by a power-on reset through the RESETP pin. When a WDT overflow
causes an internal reset, WTCSR retains its value. When used to count the clock settling time for
canceling a standby, it retains its value after counter overflow. Use word access to write to the
WTCSR counter, with H'A5 in the upper byte. Use byte access to read WTCSR.
Note: The method of writing data to this register differs from that for ordinary registers in order
Initial value:
to ensure that data is not overwritten mistakenly. Refer to section 10.7.3, Notes on
Register Access, for details.
longword writes are not possible. Read with byte access.
WDT Registers
Watchdog Timer Counter (WTCNT)
Watchdog Timer Control/Status Register (WTCSR)
R/W:
Bit:
R/W
7
0
Abbreviation
WTCNT
WTCSR
R/W
6
0
R/W
R/W
R/W *
R/W *
5
0
R/W
Access Size
R: byte;
W: word *
R: byte;
W: word *
4
0
R/W
3
0
Rev. 5.0, 09/03, page 261 of 806
Initial Value
H'00
H'00
R/W
2
0
R/W
1
0
Address
H'FFFFFF84
H'FFFFFF86
R/W
0
0