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参数资料
| 型号： | M38K29RFS |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, CPGA100 |
| 封装： | 0.65 MM PITCH, PGA-100 |
| 文件页数： | 3/25页 |
| 文件大小： | 1451K |
| 代理商： | M38K29RFS |
38K2 Group
Rev.3.00
Oct 15, 2006
page 9 of 147
REJ03B0193-0300
[CPU Mode Register (CPUM)] 003B16
The CPU mode register contains the stack page selection bit and
the internal system clock selection bit.
The CPU mode register is allocated at address 003B16.
Fig. 7 Structure of CPU mode register
Processor mode bits
b1b0
00 : Single-chip mode
01 :
10 :
Not available
11 :
Stack page selection bit
0 : 0 page
1 : 1 page
Not used (returns “1” when read)
(Do not write “0” to this bit)
Not used (returns “0” when read)
(Do not write “1” to this bit)
System clock selection bit
0 : Main clock (XIN)
1 : fSYN
System clock division ratio selection bits
b7b6
00 :
φ = f(system clock)/8 (8-divide mode)
01 :
φ = f(system clock)/4 (4-divide mode)
10 :
φ = f(system clock)/2 (2-divide mode)
11 :
φ = f(system clock) (Through mode)
CPU mode register
(CPUM : address 003B16)
b7
b0
1
0
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