參數資料
型號: M37534M4-XXXSP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 6 MHz, MICROCONTROLLER, PDIP42
封裝: 13 X 36.72 MM, 1.78 MM PITCH, PLASTIC, SDIP-42
文件頁數: 31/56頁
文件大?。?/td> 699K
代理商: M37534M4-XXXSP
7534 Group
Rev.3.00
Oct 23, 2006
page 37 of 53
REJ03B0099-0300
Fig. 46 Block diagram of system clock generating circuit (for ceramic resonator)
S
R
Q
S
R
Q
1/2
Rd
R
S
Q
Rf
1/4
1/2
WIT
instruction
STP instruction
Timing
φ
(Internal clock)
STP instruction
Interrupt request
Reset
Interrupt disable flag l
High-speed mode
Middle-speed mode
Prescaler 12
Timer 1
Clock division ratio selection bit
Double-speed mode
On-chip oscillator mode
On-chip oscillator
(Note 1)
XOUT
XIN
1/8
Middle-speed, High-speed, double -speed mode
Clock division ratio selection bit
On-chip oscillator
mode
(Note 2)
Note 1: On-chip oscillator is used only for starting.
2: Although a feed-back resistor exists on-chip, an external feed-back
resistor may be needed depending on conditions.
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