R0K561622S000BE Renesas Electronics America, R0K561622S000BE Datasheet - Page 627
R0K561622S000BE
Manufacturer Part Number
R0K561622S000BE
Description
KIT STARTER FOR H8SX/1622
Manufacturer
Renesas Electronics America
Series
Renesas Starter Kits (RSK)r
Type
MCUr
Specifications of R0K561622S000BE
Contents
Board, Cables, CD, Debugger, Power Supply
Silicon Manufacturer
Renesas
Features
Coding And Debugging, E10A Emulator, RS232 Serial Connection
Kit Contents
Board
Silicon Family Name
H8SX/1622F
Silicon Core Number
R5F61622N50LGV
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With/related Products
H8SX/1622
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
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15.6
15.6.1
The watchdog timer's TCNT, TCSR, and RSTCSR registers differ from other registers in being
more difficult to write to. The procedures for writing to and reading these registers are given
below.
(1)
TCNT and TCSR must be written to by a word transfer instruction. They cannot be written to by a
byte transfer instruction.
For writing, TCNT and TCSR are assigned to the same address. Accordingly, perform data
transfer as shown in figure 15.4. The transfer instruction writes the lower byte data to TCNT or
TCSR.
To write to RSTCSR, execute a word transfer instruction for address H'FFA6. A byte transfer
instruction cannot be used to write to RSTCSR.
The method of writing 0 to the WOVF bit in RSTCSR differs from that of writing to the RSTE bit
in RSTCSR. Perform data transfer as shown in figure 15.4.
At data transfer, the transfer instruction clears the WOVF bit to 0, but has no effect on the RSTE
bit. To write to the RSTE bit, perform data transfer as shown in figure 15.4. In this case, the
transfer instruction writes the value in bit 6 of the lower byte to the RSTE bit, but has no effect on
the WOVF bit.
Writing to TCNT, TCSR, and RSTCSR
Usage Notes
Notes on Register Access
TCSR write:
Writing 0 to the WOVF bit in RSTCSR:
TCNT write or writing to the RSTE bit in RSTCSR:
Address: H'FFA4 (TCNT)
Address: H'FFA4 (TCSR)
Address: H'FFA6 (RSTCSR)
Figure 15.4 Writing to TCNT, TCSR, and RSTCSR
H'FFA6 (RSTCSR)
15
15
15
H'5A
H'A5
H'A5
Rev. 2.00 Sep. 16, 2009 Page 597 of 1036
8 7
8 7
8 7
Section 15 Watchdog Timer (WDT)
Write data
Write data
H'00
0
0
0
REJ09B0414-0200
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