Seiko LTPA245 Series, Справочное руководство

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3-16
3.5.5 Thermal Head Electrical Characteristics
Table 3-8 LTPA245 Thermal Head Electrical Characteristics
Environmental temperature Ta=25
°
C
Rated Values
Item Simbol Conditions
MIN TYP MAX
Unit
Head average resistance RH 168 176 183
Ω
Head drive voltage Vp 4.5 - 8.5 V
Head drive current Ip max. simultaneously activated dot 64 - - 2.6 A
Logic block voltage Vdd 2.7 - 5.25 V
Logic block current Idd fclk=8 MHz, DAT=1/2fclk - - 54 mA
"High" input voltage Vih CLK, DAT, LATCH, DST 0.8
×
Vdd - Vdd V
"Low" input voltage Vil CLK, DAT, LATCH, DST 0 - 0.2
×
Vdd V
CLK - - 3
µ
A
DAT - - 0.5
µ
A
LATCH - - 3
µ
A
"High" input
current
DST
Iih
Vdd=5.0(V)
Vih=5.0(V)
- - 30
µ
A
CLK - - -3
µ
A
DAT - - -0.5
µ
A
LATCH - - -3
µ
A
"Low" input
current
DST
Iil
Vdd=5.0(V)
Vil=0(V)
- - -0.5
µ
A
3.0 V
≤
Vdd
≤
5.25 V - - 8 MHz
CLK frequency fclk
2.7 V
≤
Vdd < 3.0 V - - 5 MHz
CLK pulse width t1 See the Timing Chart 30 - - ns
DAT setup time t2 See the Timing Chart 30 - - ns
DAT hold time t3 See the Timing Chart 10 - - ns
LATCH setup time t4 See the Timing Chart 200 - - ns
LATCH pulse width t5 See the Timing Chart 100 - - ns
LATCH hold time t6 See the Timing Chart 50 - - ns
DST setup time t7 See the Timing Chart 300 - - ns
3.0 V
≤
Vdd
≤
5.25 V
See the Timing Chart
- - 120 ns
DATO delay time t8
2.7 V
≤
Vdd < 3.0 V
See the Timing Chart
- - 150 ns