r5s72060w200fpv Renesas Electronics Corporation., r5s72060w200fpv Datasheet - Page 284

• Manufacturer Part Number: r5s72060w200fpv
• Description: 32-bit Risc Microcomputer Superhtm Risc Engine Family / Sh7200 Series
• Manufacturer: Renesas Electronics Corporation.

Section 8 Bus State Controller (BSC)
8.4.6
RTCNT is an 8-bit counter that increments using the clock selected by bits CKS[2:0] in RTCSR.
When RTCNT matches RTCOR, RTCNT is cleared to 0. The value in RTCNT returns to 0 after
counting up to 255. When the RTCNT is written, the upper 16 bits of the write data must be
H'A55A to cancel write protection. This counter is initialized to H'00000000 by a power-on reset
and retains the value by a manual reset and in software standby mode.
Initial value:
Initial value:
Rev. 2.00 Dec. 09, 2005 Page 260 of 1152
REJ09B0191-0200
Bit
31 to 8
7 to 0
R/W:
R/W:
Bit:
Bit:
Refresh Timer Counter (RTCNT)
Bit Name

31
15
R
R
0
0
-
-
30
14
R
R
0
0
-
-
Initial
Value
All 0
All 0
29
13
R
R
0
0
-
-
28
12
R
R
0
0
-
-
27
11
R
R
0
0
-
R/W
R
R/W
-
26
10
R
R
0
0
-
-
Description
Reserved
These bits are always read as 0.
8-Bit Counter
25
R
R
0
9
0
-
-
24
R
R
0
8
0
-
-
R/W
23
R
0
7
0
-
R/W
22
R
0
6
0
-
R/W
21
R
0
5
0
-
R/W
20
R
0
4
0
-
R/W
19
R
0
3
0
-
R/W
18
R
0
2
0
-
R/W
17
R
0
1
0
-
R/W
16
R
0
0
0
-