M306V5EESP Mitsubishi, M306V5EESP Datasheet - Page 27
M306V5EESP
Manufacturer Part Number
M306V5EESP
Description
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER
Manufacturer
Mitsubishi
Datasheet
1.M306V5EESP.pdf
(262 pages)
- Current page: 27 of 262
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Rev. 1.0
2.5 Clock Generating Circuit
Table 2.5.1. Clock oscillation circuits
Figure 2.5.1 Examples of main clock
The clock generating circuit contains each oscillator circuit that supplies the operating clock sources to the
CPU and internal peripheral units and that supplies the operating clock source to OSD.
Use of clock
Usable oscillator
Pins to connect oscillator
Oscillation stop/restart function
Oscillator status immediately after reset
Other
2.5.1 Example of Oscillator Circuit
Figure 2.5.1 shows some examples of the main clock circuit, one using an oscillator connected to the
circuit, and the other one using an externally derived clock for input. Circuit constants in Figure 2.5.1 vary
with each oscillator used. Use the values recommended by the manufacturer of your oscillator.
N o t e : I n s e r t a d a m p i n g r e s i s t o r i f r e q u i r e d . T h e r e s i s t a n c e w i l l v a r y d e p e n d i n g o n t h e o s c i l l a t o r a n d t h e o s c i l l a t i o n d r i v e
X
( B u i l t - i n f e e d b a c k r e s i s t o r )
I N
M i c r o c o m p u t e r
c a p a c i t y s e t t i n g . U s e t h e v a l u e r e c o m m e n d e d b y t h e m a k e r o f t h e o s c i l l a t o r .
W h e n t h e o s c i l l a t i o n d r i v e c a p a c i t y i s s e t t o l o w , c h e c k t h a t o s c i l l a t i o n i s s t a b l e . W h e n b e i n g s p e c i f i e d t o c o n n e c t a
f e e d b a c k r e s i s t o r e x t e r n a l l y b y t h e m a n u f a c t u r e , c o n n e c t a f e e d b a c k r e s i s t o r b e t w e e n p i n s X
C
I N
X
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
O U T
( N o t e )
R
C
d
O U T
• CPU’s operating clock source
• Internal peripheral units’
• Ceramic resonator
X
Available
Oscillating
Externally derived clock can be input
operating clock source
(or quartz-crystal oscillator)
IN
, X
Main clock oscillation circuit
OUT
V c c
V s s
and ON-SCREEN DISPLAY CONTROLLER
E x t e r n a l l y d e r i v e d c l o c k
( B u i l t - i n f e e d b a c k r e s i s t o r )
X
I N
MITSUBISHI MICROCOMPUTERS
M i c r o c o m p u t e r
OSD oscillation circuit
• OSD’s operating clock source
• Ceramic resonator
• LC oscillator
OSC1, OSC2
(or quartz-crystal oscillator)
M306V5ME-XXXSP
I N
a n d X
X
M306V5EESP
O p e n
O U T
O U T
.
27
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