HD6417750RF240DV Renesas Electronics America, HD6417750RF240DV Datasheet - Page 387

• Manufacturer Part Number: HD6417750RF240DV
• Description: MPU 3V 16K I-TEMP,PB-FREE 208-QF
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7750r

Specifications of HD6417750RF240DV

• Core Processor: SH-4
• Core Size: 32-Bit
• Speed: 240MHz
• Connectivity: EBI/EMI, FIFO, SCI, SmartCard
• Peripherals: DMA, POR, WDT
• Number Of I /o: 28
• Program Memory Type: ROMless
• Ram Size: 48K x 8
• Voltage - Supply (vcc/vdd): 1.4 V ~ 1.6 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 208-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

10.7.2
The WDT has the two registers summarized in table 10.5. These registers control clock selection
and timer mode switching.
Table 10.5 WDT Registers
Name
Watchdog timer
counter
Watchdog timer
control/status
register
Note:
10.8
10.8.1
The watchdog timer counter (WTCNT) is an 8-bit readable/writable counter that counts up on the
selected clock. When WTCNT overflows, a reset is generated in watchdog timer mode, or an
interrupt in interval timer mode. WTCNT is initialized to H'00 only by a power-on reset via the
RESET pin.
To write to the WTCNT counter, use a word-size access with the upper byte set to H'5A. To read
WTCNT, use a byte-size access.
Initial value:
*
Register Configuration
WDT Register Descriptions
Watchdog Timer Counter (WTCNT)
Use word-size access when writing. Perform the write with the upper byte set to H'5A or
H'A5, respectively. Byte- and longword-size writes cannot be used.
Use byte access when reading.
R/W:
Bit:
Abbreviation
WTCNT
WTCSR
R/W
7
0
R/W
6
0
R/W
R/W*
R/W*
R/W
5
0
Initial
Value
H'00
H'00
R/W
4
0
P4 Address
H'FFC00008
H'FFC0000C
Rev.7.00 Oct. 10, 2008 Page 301 of 1074
Section 10 Clock Oscillation Circuits
R/W
3
0
Area 7
Address
H'1FC00008
H'1FC0000C
R/W
2
0
REJ09B0366-0700
R/W
1
0
Access Size
R: 8, W: 16*
R: 8, W: 16*
R/W
0
0