參數資料
型號: M37542F8HP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQCC36
封裝: 6 X 6 MM, 0.50 MM PITCH, PLASTIC, WQFN-36
文件頁數: 84/122頁
文件大?。?/td> 1311K
代理商: M37542F8HP
7542 Group
Rev.3.03
Jul 11, 2008
Page 64 of 117
REJ03B0006-0303
Fig. 82 Block diagram of internal clock generating circuit (for ceramic resonator)
Fig. 83 Block diagram of internal clock generating circuit (for RC oscillation)
S
R
Q
S
R
Q
1/2
R
S
Q
(Note)
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 1
Timer 1
Clock division
ratio selection bits
Double-speed mode
On-chip oscillator
mode
On-chip oscillator
XOUT
XIN
1/16
Clock division ratio selection bits
Middle-, high-, double-speed mode
On-chip oscillator mode
1/4
1/2
On-chip oscillator division
ratio selection bits
ROSC/128
ROSC/8
ROSC/2
ROSC/1
RESET
Although a feed-back resistor exists on-chip, an external feed-back resistor
may be needed depending on conditions.
Note:
S
R
Q
S
R
Q
1/2
R
S
Q
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 1
Timer 1
Clock division
ratio selection bits
Double-speed mode
RING
XOUT
XIN
Delay
Clock division ratio selection bits
Middle-, high-, double-speed mode
On-chip
oscillator
mode
RESET
On-chip oscillator
mode
On-chip oscillator division
ratio selection bits
On-chip oscillator
1/16
1/4
1/2
ROSC/128
ROSC/8
ROSC/2
ROSC/1
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