參數(shù)資料
型號: μPD789405
廠商: NEC Corp.
英文描述: 8 Bit Single Chip Microcontrollers(8位單片微控制器)
中文描述: 8位單片機(jī)微控制器(8位單片微控制器)
文件頁數(shù): 34/128頁
文件大?。?/td> 607K
代理商: ΜPD789405
34
μ
PD789405, 789406, 789407
(2) Suboscillation mode register (SCKM)
The SCKM selects a feedback resistor for the subsystem clock, and controls the oscillation of the clock.
The subsystem clock is manipulated using a 1-bit or 8-bit memory manipulation instruction.
A RESET input clears the SCKM to 00H.
Figure 5-9. Suboscillation Mode Register Format
Feedback resistor selection
0
0
0
0
0
0
FRC SCC
SCKM
Symbol
Address
When reset
R/W
FFF0H
00H
R/W
7
6
5
4
3
2
1
0
FRC
0
1
Internal feedback resistor used
Internal feedback resistor not used
Control of subsystem clock oscillator operation
SCC
0
1
Operation enabled
Operation disabled
Caution
Bits 2 to 7 must be fixed to 0.
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