H8S-2350 RENESAS [Renesas Technology Corp], H8S-2350 Datasheet - Page 573
H8S-2350
Manufacturer Part Number
H8S-2350
Description
16-Bit Single-Chip Microcomputer
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.H8S-2350.pdf
(1025 pages)
- Current page: 573 of 1025
- Download datasheet (6Mb)
Writing to RSTCSR
RSTCSR must be written to by word transfer instruction to address H'FFBE. It cannot be written
to with byte instructions.
Figure 12.3 shows the format of data written to RSTCSR. The method of writing 0 to the WOVF
bit differs from that for writing to the RSTE and RSTS bits.
To write 0 to the WOVF bit, the write data must have H'A5 in the upper byte and H'00 in the
lower byte. This clears the WOVF bit to 0, but has no effect on the RSTE and RSTS bits. To write
to the RSTE and RSTS bits, the upper byte must contain H'5A and the lower byte must contain the
write data. This writes the values in bits 6 and 5 of the lower byte into the RSTE and RSTS bits,
but has no effect on the WOVF bit.
Reading TCNT, TCSR, and RSTCSR
These registers are read in the same way as other registers. The read addresses are H'FFBC for
TCSR, H'FFBD for TCNT, and H'FFBF for RSTCSR.
Writing 0 to WOVF bit
Writing to RSTE and RSTS bits
Address: H'FFBE
Address: H'FFBE
Figure 12.3 Format of Data Written to RSTCSR
15
15
H'A5
H'5A
Rev. 3.00 Sep 15, 2006 page 539 of 988
Section 12 Watchdog Timer (WDT)
8 7
8 7
Write data
H'00
REJ09B0330-0300
0
0
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