5-8
Samsung Electronics
5-10 Second Cassette Feeder (Option)
This circuit contains:
-motor driver consisted of motor drive IC(UDN2916B), MC14040 binary counter, and peripheral filp-flop;
-paper empty sensor;
-paper feeding clutch controller; and
-interface signal controller.
The 480 kHz resonator generates 373 pps motor phase using the binary counter to drive the motor.
SCF I/O Control Signal
Circuit Description
Pin no. Pin name
Description
Status
CN1-2
SCF_SEL
SCF select
L: SCF
CN1-3
SCFMTRSTRT
SCF motor start
L: start
CN1-4
SCFCLTCH
SCF clutch control H: paper feed
CN1-5
SCFPEMPT
SCF paper empty
L: no paper