BU7344HFV Datasheet, PDF (9/14 Pages) Rohm – Compact 1ch Clock Generators for Digital Cameras

BU7344HFV,BU7345HFV,BU7346GUL
Technical Note
●Block diagram, pin assignment/functions
○BU7344HFV
1:VDD
2:VSS
3:OUT
6:IN
5：SEL
4：OE
6pin:IN
5pin:SEL
4pin:OE
PLL
DATA1
DATA2
1/2
3pin:OUT
Fig.49 Pin assignment
Fig.50 Block diagram
PIN No.
1
2
3
4
5
6
PIN Name
VDD
VSS
OUT
OE
SEL
IN
Function
Power supply
GND
Clock output terminal (SEL=L:40.5000MHz, SEL=H:36.0000MHz)
Power-down pin (L:disable, H:enable), equipped with Pull-down function, output set to L
at disable
Output selection (L:40.5000MHz, H:36.0000MHz)
Clock input pin (27.0000MHz input)
○BU7345HFV
1:VDD
2:VSS
3:OUT
6:IN
5：SEL
4：OE
6pin:IN
5pin:SEL
4pin:OE
PLL
DATA1
DATA2
1/2
3pin:OUT
Fig.51 Pin assignment
Fig.52 Block diagram
PIN No.
1
2
3
4
5
6
PIN Name
VDD
VSS
OUT
OE
SEL
IN
Function
Power supply
GND
Clock output terminal (SEL=L:38.0000MHz, SEL=H:36.0000MHz)
Power-down pin (L:disable, H:enable), equipped with Pull-down function, output set to L
at disable
Output selection (L:38.0000MHz, H:36.0000MHz)
Clock input pin (27.0000MHz input)
○BU7346GUL
B VDD VSS OUT
A1:XIN
PLL
DATA1
DATA2
1/2
B3:OUT
PIN No.
A1
A2
A3
B1
B2
B3
A
XIN
SEL PDB
A2:SEL
1
2
3
Bottom view
Fig.53 Pin assignment
A3:PDB
Fig.54 Block diagram
PIN Name
XIN
SEL
PDB
VDD
VSS
OUT
Function
Clock input pin (27.0000MHz input)
Output selection (L:38.0000MHz, H:36.0000MHz)
Power-down pin (L:disable, H:enable), equipped with
Pull-down function, output set to L at disable
Power supply
GND
Clock output terminal (SEL=L:38.0000MHz, SEL=H:36.0000MHz)
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9/13
2011.01 - Rev.A