参数资料
型号: M38039GCHWG
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 8.4 MHz, MICROCONTROLLER, PBGA64
封装: 6 X 6 MM, 0.65 PITCH, FLGA-64
文件页数: 10/103页
文件大小: 1412K
代理商: M38039GCHWG
REJ03B0166-0113 Rev.1.13
Aug 21, 2009
Page 14 of 100
3803 Group (Spec.H QzROM version)
[CPU Mode Register (CPUM)] 003B16
The CPU mode register contains the stack page selection bit, the
internal system clock control bits, etc.
The CPU mode register is allocated at address 003B16.
Fig 9.
Structure of CPU mode register
CPU mode register
(CPUM: address 003B16)
b7
b0
Stack page selection bit
0 : 0 page
1 : 1 page
Processor mode bits
b1 b0
0
0 : Single-chip mode
01 :
1
0 :
Not available
11 :
Main clock division ratio selection bits
b7 b6
00
:
φ = f(XIN)/2 (high-speed mode)
01
:
φ = f(XIN)/8 (middle-speed mode)
10
:
φ = f(XCIN)/2 (low-speed mode)
1
: Not available
Fix this bit to “1”.
1
Port XC switch bit
0 : I/O port function (stop oscillating)
1: XCIN-XCOUT oscillating function
Main clock (XIN-XOUT) stop bit
0 : Oscillating
1 : Stopped
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