Specifications

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 µA
DAT - - 0.5 µA
LATCH - - 3 µA
"High"input
current
DST
Iih
Ta=25°C
Vdd=5.0(V)
Vih=5.0(V)
- - 55 µA
CLK - - -3 µA
DAT - - -0.5 µA
LATCH - - -3 µA
"Low "input
current
DST
Iil
Ta=25°C
Vdd=5.0(V)
Vil=0(V)
- - -0.5 µA
Driver leak current Ileak Vp=7(V), for 1 bit - - 1.0 µA
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