Custom Engineering MT002-1, Руководство пользователя

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4.3 Printing data and printing position
Print data of 384-bit length is printed in the arrangement as shown in the following fi gure :
Printing data
Printing paper
DATA IN
Printer mechanism
Motor
1 2 3 4 . . . . . . 383 384
Printing surface
Paper
feeding
direction
4.4 Electrical characteristics of circuit
ITEM SYMBOL MINI TYP. MAXI. UNIT CONDITIONS
Head power supply V
H
- 7.2 8.5 V
Logic power supply V
DD
3.00 5.00 5.25 V
Logic supply current I
DD
- - 54 mA fDI = fCLK/2
Input Voltage
High V
IH
0.8 x V
DD
- V
DD
V
STB, DI, LAT, CLK
Low V
IL
0 - 0.2 x V
DD
V
Data input current
(DI)
High I
IH
DI - - 0.5 uA
VIH = 5V
VIL = 0V
Low I
IL
DI - - -0.5 uA
STB input current
(STB)
High I
IH
STB - - 30 uA
Low I
IL
STB - - -0.5 uA
Clock input current
(CLK)
High I
IH
CLK - - 3 uA
Low I
IL
CLK - - -3 uA
Latch input current
(LAT)
High I
IH
LAT - - 3 uA
Low I
IL
LAT - - -3 uA
4. PRINT HEAD
User Manual
MT002-1 4-3