Seiko LTP1245R-C384-E, Техническое описание, Страница: 32 / 74

3-18
3.5.6 Thermal Head Electrical Characteristics
Table 3-8 Thermal Head Electrical Characteristics
(Vdd=4.5 to 5.5V, Ta=0 to 50
°
C)
Rated
Item Sinbol Conditions
MIN TYP MAX
Unit
Head resistance
RH
169 176 183
Ω
Head drive voltage Vp 4.2 - 8.5 V
Head drive current Ip Vp=8.5 V, max. simultaneously
activated dot “64”
2.5 2.6 2.7 A
Logic block voltage Vdd 4.5 5.0 5.5 V
Waiting for activation - - 0.5 mA
fclk=4MHz,DAT=fixed - - 6 mA
Logic block current
Idd
Ta=
25
°
C
fclk=4MHz,DAT=1/2fclk - - 10 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
Ta=25
°
C
Vdd=5.0(V)
Vih=5.0(V)
- - 55
µ
A
CLK - - -3
µ
A
DAT - - -0.5
µ
A
LATCH - - -3
µ
A
"Low "input
current
DST
Iil
Ta=25
°
C
Vdd=5.0(V)
Vil=0(V)
- - -0.5
µ
A
Driver leak current Ileak Vp=7(V), for 1 bit - - 1.0
µ
A
CLK frequency
fclk
- - 4 MHz
CLK pulse width t1 See the Timing Chart 80 - - ns
DAT setup-time
t2
See the Timing Chart 50 - - ns
DAT hold time
t3
See the Timing Chart 50 - - ns
LATCH setup time t4 See the Timing Chart 120 - - ns
LATCH pulse width
t5
See the Timing Chart 120 - - ns
LATCH hold time t6 See the Timing Chart 120 - - ns
DST setup time
t7
See the Timing Chart 120 - - ns