2-2. Operation of Control Parts
2-19 CLP-621 & CLP-631
(a) CPU
The CPU is a mi
croprocessor with 32-bit architecture. The clock fed to the CPU is 16 MHz.
The CPU internally multiplies this 16 MHz by 8 times and uses 128 MHz clock. The CPU
includes cache memory, RA
Ms, DMA controller, serial I/F, USB function controller, A/D
converter, etc.
(b) Flash ROM
A flash ROM of 16M bits (2M bytes) that stores the firmware and CG (character generator)
(c) SDRAM (Synchronous dynamic RAM)
A SDRAM of 64M bits (8M bytes) t
hat is used as working area, input buffer and download
buffer
(d) Custom IC
The custom IC incorporates a control circuit for the interface I/O port, motors, print head,
etc.
(e) Head c
ontrol
This is a circuit to control the thermal head driver incorporated in the thermal head. It also
checks if a thermal element of the thermal head is faulty.
(f) PF motor driver
This is a circuit to drive the PF Motor. The PF Motor is a stepping motor.
(g) Ribbon motor driver
This is a circuit to drive the Ribbon Motor F and Ribbon Motor R. These motors are
stepping motors. The rotational direction of the Ribbon Motor R is changed by the setting
of the Ribbon Winding Selection Switch.
(h) Buzzer
The buzzer is driven when an alarm, etc. occurs.
(i) Fan
Cooling fan for the ribbon motor. When the temperature of the Ribbon Motor F (take-up
side motor) exceeds a certain value, this fan starts to work.
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General
Weight and Dimensions
