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CHAPTER 2 FUNCTIONS & OPERATION
Function list of major ICs
IC No.
Name
Function
IC1
SDRAM (128 Mbit)
Working memory for the scanner controller and for
storing image data temporarily
IC2
SDRAM (128 Mbit)
Working memory for the scanner controller and for
storing image data temporarily
IC6
Scanner controller
Overall scanner control
IC8
Serial EEPROM (2 kbit) Saves the various setting data
IC11
Flash memory (16 Mbit) Stores firmware
IC14 Sensor
control
microcontroller
Controls the ultrasonic sensor and other sensors for
detecting documents
IC16
Motor driver
For driving the feed motor
IC17
Motor driver
For driving the main motor
Table 2-401
2-14
COPYRIGHT
©
CANON ELECTRONICS INC. 2011 CANON DR-M140 FIRST EDITION
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