MZ-80k Technical data

Technical data of the MZ-80K

General

CPU Z-80
Clocking rate 2 MHz
Memory Monitor ROM 4K bytes
RAM 20K bytes ( dynamic RAM )
Memory extension 48K bytes ( max. )
CG-ROM 2K bytes
V-RAM 1K bytes
Display 10″ CRT ( black / white display )
8 x 8 dot matrix
Characters: 1000 ( 40 characters x 25 lines )
Cassette Standard audio cassette tape
Data transfer speed 1200 bits/sec.
Data transfer system SHARP PWM
Clock function built in ( 2 counters used of the PIT 8253 )
Music function built in ( 1 counter used of the PIT 8253 )
Sound output 1 generator of the 8253; 400 mW output max.
Keys layout Number; 78 keys,
ASCII standard ( alphabet capital letter, figures),
small letter, graphic
Edit function cursor control
( up, down, right, left, home, clear home )
edit key, delete key
Power supply AC 220V ±10%, 50Hz
AC 240V ±10%, 50Hz ( for UK )
Power consumption approx. 45W
Temperatures operating temperature 0 to 35 degrees Centigrade
storage temperature -15 to 60 degrees Centigrade
Humidity lower than 80% during operation
Dimensions width 410 x height 270 x depth 470mm
Weight approx. 13 kg

CPU Board Section ( DCPU-0006PAZZ )

CPU Z-80; 1 pc.
ROM Monitor; 1 pc. ( 4K bytes )
Character generator; 1 pc. ( 2K bytes )
RAM Standard;
16K dynamic RAM; 8 pcs. ( 16K bytes )
4K dynamic RAM; 8 pcs. ( 4K bytes )
Video RAM; 2 pcs. ( 1K bytes )
Programmable counter 8253 1 pc.
Programmable peripheral interface 8255 1 pc.
Other ICs 53 pcs.

Power supply  ( DBOXD0004PAZZ ), ( DBOX0005PAZZ for UK )

Input AC 220V ±10%, 50Hz
AC 240V ±10%, 50Hz ( for UK )
Output DC 12V, 1.6A max.
DC 5V, 1.6A max.
DC -5V, 0.2A max.

Display Section ( DUTT0004PAZZ )

I. General specifications
Size 10″
Frequency 60Hz ( vertical )
15.75kHz ( horizontal )
Power source DC 12V, 1.1A ±10%
Picture tube quick start type ( 3 sec. )
240NB4; 10″ 90° deflection
explosion proof type
heater 12V, 75mA
IC 2 pcs.
Transistor 5 pcs.
Diodes 9 pcs.
Sound output 400mW max. ( 400Hz )
speaker 8cm, round dynamic type ( 32Ohms )
Control knobs volume, V-Hold, contrast, H-Hold, brightness, focus
Working temperature -10°C to 50°C
II. Electrical specifications
Video output 40Vpp standard ( 35Vpp limit )
Resolution Horizontal

This pattern must be well-focused in the middle of the screen.
Non-linearity distortion horizontal ±8% ( ±14% max. )
vertical ±8% ( ±12% max. )
Geometrical distortion Pincushion dist. 1% ( 2% max. )
Barrel dist. 1% ( 2% max. )
Trapezoidal dist. 1% ( 2% max. )
Parallelogram dist. 1° ( 2.5° max. )
High voltage zero beam 11kV ( 10kV min., 12kV max. )
Power supply DC 12V, 1.05A ( 1.2A max. )
Working range 12V ±10%
Scan size horizontal ±10% ( ±15% max. )
vertical ±10% ( ±15% max. )
Horizontal lock-in range ±300Hz ( ±100Hz )
Vertical lock-in range -12Hz ( -6Hz limit )
Audio frequency characteristic 400Hz ( 0dB )
-10dB ±4dB at 100Hz
-12dB ±4dB at 10kHz
Sound maximum output 400mW at 400Hz ( 350mW min. )

Cassette Tape Recorder Section ( KTRC-0004PAZZ )

System PWM recording
Power source 5V ±0.25% ( rated )
Rated amperage wait 2mA
record 70mA ( TEAC test tape )
playback 7mA ( TEAC test tape )
Semiconductors 4 transistors
1 IC
4 diodes
Applied tape from C30 to C120
Tape speed 4.75cm/sec.
Track 2-track monaural type
Motor electronic governor motor ( 12V )
Biasing DC system
Erasing DC system
Playback sensitivity 1ms to 500µsec. ( standard )
Input level below 0.4V ( “L” )
over 2.0V ( “H” )
Input impedance over 10kOhms ( record jack )
Output level below 0.4V ( “L” )
over 2.0V ( “H” )
Working temperature -10°C to 50°C
Strage temperature -25°C to 70°C