M32C83T datasheet(91/527 Pages) RENESAS

91 / 527 page

Page 68

8. Clock Generation Circuit

)

(

Figure 8.3 CM1 Register

CM10

(b4 - b1)

(b5)

(b6)

CM17

System Clock Control Register 1(1)

Reserved Bit

All Clock Stop

Control Bit(2)

Reserved Bit

CPU Clock Select

Bit 2(4)

Set to "0"

Set to "1"

0 : Clock oscillates

1 : All clocks stop (stop mode)(3)

0 : Main clock

1 : PLL clock

Symbol

Address

After Reset

CM1

000716

0010 00002

Function

Bit Name

Bit

Symbol

NOTES:

1. Rewrite the CM1 register after the PRC0 bit in the PRCR register is set to "1" (write enable).

2. When the CM10 bit is set to "1", XOUT becomes "H" and the internal feedback resistance is disabled.

XIN, XCIN and XCOUT are placed in high-impedance states.

3. When the CM10 bit is set to "1", the MCD register is set to "0816" (divide-by-8 mode). When the

CM20 bit is set to "1" (oscillation stop detect function enabled) or the CM21 bit to "1" (on-chip

oscillator selected), do not set the CM10 bit to "1".

4. CM17 bit is enabled only when the CM21 bit in the CM2 register is set to "0". Use the procedure

shown in Figure 8.13 to set the CM17 bit to "1".

M32C83T 데이터시트(PDF) 91 Page - Renesas Technology Corp

M32C83T 데이터시트(HTML) 91 Page - Renesas Technology Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

데이터시트 다운로드

링크 URL