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M34551E4-XXXFP View Datasheet(PDF) - Renesas Electronics

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M34551E4-XXXFP Datasheet PDF : 69 Pages
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MITSUBISHI MICROCOMPUTERS
4551 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER for
INFRARED REMOTE CONTROL TRANSMITTER
(2) f(XIN) clock generating circuit
Clock signal f(XIN) is obtained by externally connecting a
ceramic resonator. Connect this external circuit to pins XIN
and XOUT at the shortest distance. A feedback resistor is built
in between pins XIN and XOUT.
(3) f(XCIN) clock generating circuit
Clock signal f(XCIN) is obtained by externally connecting a
quartz-crystal oscillator. Connect this external circuit to pins
XCIN and XCOUT at the shortest distance. A feedback resistor
is built in between pins XCIN and XCOUT.
ROM ORDERING METHOD
Please submit the information described below when ordering
Mask ROM.
(1) M34551M4-XXXFP Mask ROM Order Confirmation Form
.............................................................................................. 1
(2) Data to be written into mask ROM ......................... EPROM
(three sets containing the identical data)
(3) Mark Specification Form ..................................................... 1
XIN
CIN
M34551
Note: Externally connect a
damping resistor Rd
XOUT
depending on the
oscillation frequency.
(A feedback resistor is
Rd
built-in.)
Use the resonator
manufacturer’s
COUT
recommended value
because constants such
as capacitance depend
on the resonator.
Fig. 38 Ceramic resonator external circuit
M34551
Note: Externally connect a
damping resistor Rd
XCIN
XCOUT
depending on the
oscillation frequency.
(A feedback resistor is
Rd
built-in.)
Use the quartz-crystal
oscillator manufacturer’s
recommended value
CIN
COUT because constants such
as capacitance depend
on the quartz-crystal
oscillator.
Fig. 39 Quartz-crystal oscillator external circuit
37
 

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