HD6417709SF133B Renesas Electronics America, HD6417709SF133B Datasheet - Page 260

• Manufacturer Part Number: HD6417709SF133B
• Description: IC SUPERH MPU ROMLESS 208LQFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7700r

Specifications of HD6417709SF133B

• Core Processor: SH-3
• Core Size: 32-Bit
• Speed: 133MHz
• Connectivity: EBI/EMI, FIFO, IrDA, SCI, SmartCard
• Peripherals: DMA, POR, WDT
• Number Of I /o: 96
• Program Memory Type: ROMless
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.65 V ~ 2.05 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 208-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -

9.6
9.6.1
Figure 9.2 shows a block diagram of the WDT.
9.6.2
The WDT has two registers that select the clock, switch the timer mode, and perform other
functions. Table 9.5 shows the WDT registers.
Table 9.5
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
Rev. 5.00, 09/03, page 214 of 760
cancellation
Legend
WTCSR:
longword writes are not possible. Read with byte access.
WTCNT:
Overview of WDT
Block Diagram of WDT
Interrupt
Register Configuration
Standby
Internal
request
request
reset
Register Configuration
Watchdog timer control/status register
Watchdog timer counter
Interrupt
Standby
control
control
control
Reset
Abbreviation
WTCNT
WTCSR
Figure 9.2 Block Diagram of WDT
WTCSR
Clock selection
R/W
R/W * H'00
R/W * H'00
Overflow
Bus interface
WDT
Initial Value
WTCNT
Clock selector
Divider
Address
H'FFFFFF84
H'FFFFFF86
Clock
Standby
mode
Peripheral
clock
Access Size
R: 8;
W: 16 *
R: 8;
W: 16 *