2 – 4
A0~A7
RAM 1 (Q3)
MPU
P03
CS1
RD
OE
D4~D7
D0~D3
RAS
CAS
RAM 2 (Q4)
T1
T2
T3
Clockout*
A0~A7
CS1~CS4
RD
D0~D7
(Read)
WRH
WRL
D0~D7
(Write)
8-bit bus, byte instruction
* Clockout is provided when the original excitation is selected.
(3)
RAM (MSM51C464A-80RS)
The RAM is CMOS dynamic RAM with (64K
×
4-bit)
×
2 configuration, and used as buffers
(such as receiving buffer, printing buffer, DLL buffer and working buffer).
The following shows examples of the memory access operation.
Содержание MICROLINE 320
Страница 7: ...1 2 1 2 Options 1 Cut sheet feeder unit CSF Attachment assy 2 Pull tractor assy Single bin CSF...
Страница 8: ...1 3 3 Bottom push tractor unit 5 Serial I F RS 232C 4 Roll paper stand Narrow only...
Страница 36: ...2 28 Figure 2 6 Ribbon cartridge Drive gear Ink reservoir...
Страница 47: ...2 39 Figure 2 14 Change lever Release cam Platen Front release gear arm TOP BOTTOM REAR Pressure rollers...
Страница 49: ...2 41 Paper end sensor Sensor lever Shaded portion A B Paper end lever Bottom paper end lever Figure 2 15 C...
Страница 51: ...2 43 Platen Figure 2 16 Ribbon protector Printhead Carriage frame assembly...
Страница 90: ...5 2 Carriage shaft...
Страница 98: ...5 10 9 Carriage Assy NK2 10 SUS Bearing part of the guide roller EM 30L B...
Страница 119: ...6 21 Replace RS232C board Remedied No Yes End Replace driver board...
Страница 121: ...B 1 B SPARE PARTS LIST...
Страница 122: ...B 2 Figure 11 1 Upper Cover Assy 1 2 3 4...
Страница 124: ...B 4 Figure 11 2 Printer General Assy 6 9 8 2 7 4 5 3 10 1...
Страница 129: ...B 9 Figure 11 4 Carriage Assy 12 9 8 6 14 11 10 1 13 7 5 4 3...
Страница 131: ...B 11 Figure 11 5 Option Spare Parts 1 2 3 4 5 6 7 Pull Tractor Bottom Tractor I F Board...
Страница 145: ...Microline 320 321 Turbo Service Manual Part Number 59273701 Printed in the USA...