HD6417708RF100A Renesas Electronics America, HD6417708RF100A Datasheet - Page 197
HD6417708RF100A
Manufacturer Part Number
HD6417708RF100A
Description
IC SUPERH MPU ROMLESS 144LQFP
Manufacturer
Renesas Electronics America
Series
SuperH® SH7700r
Datasheet
1.HD6417708SF60V.pdf
(635 pages)
Specifications of HD6417708RF100A
Core Processor
SH-2
Core Size
32-Bit
Speed
100MHz
Connectivity
EBI/EMI, SCI, SmartCard
Peripherals
POR, WDT
Number Of I /o
8
Program Memory Type
ROMless
Voltage - Supply (vcc/vdd)
3.15 V ~ 3.6 V
Oscillator Type
External
Operating Temperature
-20°C ~ 75°C
Package / Case
144-LQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Ram Size
-
Program Memory Size
-
Data Converters
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
HD6417708RF100A
Manufacturer:
Renesas Electronics America
Quantity:
10 000
Part Number:
HD6417708RF100A
Manufacturer:
HITACHI/日立
Quantity:
20 000
Part Number:
HD6417708RF100AV
Manufacturer:
RENESAS/瑞萨
Quantity:
20 000
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9.8
9.8.1
Figure 9.4 shows a block diagram of the WDT.
9.8.2
The WDT has two registers that select the clock, switch the timer mode, and perform other
functions. Table 9.5 shows the WDT register.
Table 9.5
Name
Watchdog timer counter
Watchdog timer
control/status register
Note: * Write with a word access. Write H'5A and H'A5, respectively, in the upper bytes. Byte or
cancellation
WTCSR:
WTCNT:
Interrupt
Standby
longword writes are not possible. Read with a byte access.
Internal
request
request
Overview of the Watchdog Timer (WDT)
Block Diagram of the WDT
Register Configurations
reset
Register Configuration
Watchdog timer control/status register
Watchdog timer counter
Interrupt
Standby
control
control
control
Reset
Abbreviation
WTCNT
WTCSR
Figure 9.4 Block Diagram of the WDT
WTCSR
Clock selection
R/W
R/W*
R/W*
Overflow
Bus interface
WDT
Size
R: byte;
W: word*
R: byte;
W: word*
WTCNT
Clock selector
Divider
Initial Value
H'00
H'00
Clock
Internal bus
Standby
mode
Peripheral
clock
Address
H'FFFFFF84
H'FFFFFF86
177
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