Renesas RX100 Series User Manual page 915

RX13T Group
Table 31.3 Example of FlashIF Clock Frequency Settings
FlashIF Clock PCKA[4:0] Bit
Frequency (MHz) Setting
32
29
26
23
20
17
14
11
8
5
2
SAS[1:0] Bits (Start-Up Area Select)
These bits are used to select the start-up area. To change the start-up area, the following three methods can be used.
(1) When selecting the start-up area according to the start-up area settings of the extra area
With the SAS[1:0] bits set to 00b or 01b, the start-up area is selected according to the start-up area settings of the extra
area. The settings are enabled after a reset is released.
(2) When switching the start-up area to the default area temporarily
When 10b is written to the SAS[1:0] bits, the start-up area is switched to the default area immediately after data is written
to the register, regardless of the start-up area settings of the extra area.
When a reset is generated after this, the area is selected according to the start-up area settings of the extra area.
(3) When switching the start-up area to the alternative area temporarily
When 11b is written to the SAS[1:0] bits, the start-up area is switched to the alternative area, regardless of the start-up
area settings of the extra area.
When a reset is generated after this, the area is selected according to the start-up area settings of the extra area.
R01UH0822EJ0100 Rev.1.00
Jul 31, 2019
FlashIF Clock
Frequency (MHz)
11111b 31
11100b 28
11001b 25
10110b 22
10011b 19
10000b 16
01101b 13
01010b 10
00111b 7
00100b 4
00001b 1
PCKA[4:0] Bit FlashIF Clock
Setting Frequency (MHz)
11110b
11011b
11000b
10101b
10010b
01111b
01100b
01001b
00110b
00011b
00000b
31. Flash Memory (FLASH)
PCKA[4:0] Bit
Setting
30 11101b
27 11010b
24 10111b
21 10100b
18 10001b
15 01110b
12 01011b
9 01000b
6 00101b
3 00010b
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