TD62C805F
2001-07-05
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TOSHIBA Bi−CMOS INTEGRATED CIRCUIT SILICON MONOLITHIC
TD62C805F
48BIT THERMAL HEAD DRIVER
The TD62805F is a general purpose 48bit driver IC consisting of 8
block 8bit shift register and 48bit drivers (Open Drain).
This device is best suited as a 48 dot thermal printer head
drivers.
FEATURES
8bit parallel input and 6 block 8bit shift register
CMOS compatible input.
High driverability ·········· 30 V / 100 mA / ch
Built in monostable multivibrator for head protection
16 steps gray scale operating with 4bit data
48bit open drain outputs
Package ·························· µPFP−80 pin
Weight: 1.53 g (Typ.)
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PIN CONNECTION (TOP VIEW)
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BLOCK DIAGRAM
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PIN FUNCTION
PIN No. PIN NAME FUNCTION
24 CLK “ ” : Data shift
25 WRITE·CLK “H” : enable clock signal, “L” : disable clock signal pull−up input terminal
37 RESET “L” : all outputs “OFF”, reset PWM counter reset PWM counter and MMV circuit
Pull−up input terminal
28~36 DATA1~8
Input terminals for output data
“H” : output “ON”, “L” : output “OFF”
And input terminals for PWM data
26 OUT / PWM “H” : enable output data for shift register
“L” : enable PWM data for counter
38 PWM “L” : output enable (PWM operating)
39 COUNTER·CLOCK Input terminal for clock of PWM counter and for trigger of MMV
40 OUT· E “L” : all outputs “ON”
42 E·CLK “ ” : outputs “OFF” when OUT·E is “High”. Outputs “ON” when OUT·E is “Low”.
Pull−up input terminal
41 WRITE· E “H” : enable E−CLK signal pull−up input terminal
43 MMV / E CR connection terminal for MMV
22 MO ON / OFF monitor terminal of output OF8
23, 44 VDD Supply voltage terminal for control logic
― V
SS (O) GND terminals for driver
PIN No. : 2, 3, 12, 21, 45, 54, 63, 64, 73
27, 32 VSS (L) GND terminals for control logic
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(1) Data Input
D1~D6 of Input Dates are entered to shift Register by the clock signal with the timing of rise.
Outputs are latched by holding the WRITE·CLK “Low” or to stop the clock signal.
PWM Data (DATA1~4) are latched by OUT / PWM signal “Low”.
(2) Output Enable
Outputs become “OFF” at the first rising edge of E·CLK after the OUT·E to “High”, and become “ON” at
the first rising edge of E·CLK after the OUT·E to “Low”.
Output ON / OFF duty is controlled by controlling OUT·E signal directly or to change the timing of
WRITE·E and E·CLK.
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(3) PWM Control
Outputs ON / OFF duty are controlled by OUT· E and PWM DATA of D
1~D4 PWM control is performed
by comparing the internal 4bit PWM Counter out and PWM DATA of D1~D4.
For example, when PWM DATA is 7, 50% Output Duty is obtained.
(Refer to tables below.)
PWM DATA 0 1 2 3 4 5 6 7 8 9
Duty (%) 0 6.25 12.50 18.75 25.00 31.25 37.50 43.75 50.00 56.25
PWM DATA A B C D E F
Duty (%) 62.50 68.75 75.00 81.25 87.50 100.00
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MMV OPERATION
MMV output of Q becomes “L” when the MMV / E voltage becomes less than Vref (L) after the first rising edge of
INTERNAL CLOCK.
And becomes “H” when the MMV / E voltage above Vref (H) after re−charging of external capacitance connect to
MMV / E. The external capacitance and Resistor connect to MMV / E control MMV Output “ON” period.
So Output Load is protected from burn−out. It’s required enough discharging time of external capacitance.
(Refer to figure below)
● Pulse width of MMV
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INPUT CIRCUIT
1. DATA1~8, CLK, COUNTER·CLK, OUT /PWM , OUT·E
2. E·CLK, RESET , WRITE·E, WRITE·CLK
3. PWM
OUTPUT CIRCUIT
1. 8~OA1 ~8~OF1
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MAXIMUM RATINGS (Ta = 25°C)
CHARACTERISTIC SYMBOL RATING UNIT
Supply Voltage VDD 7 V
Output Voltage VDS 30 V
Output Current IDS 100 mA / ch
Input Current IIN ±5 mA
Input Voltage VIN −0.4~VDD±0.4 V
Free Air 1.0
Power
Dissipation On PCB (Note)
PD 1.3
W
Operating Temperature Topr −40~85 °C
Storage Temperature Tstg −55~150 °C
Note: On Glass Epoxy PCB (100 × 100 × 1.6 mm, Cu 40%)
RECOMMENDED OPERATING CONDITIONS (Ta = −40~85°C)
CHARACTERISTIC SYMBOL TEST CONDITION MIN TYP. MAX UNIT
Output Voltage VDS ― ― ― 26 V
Supply Voltage VDD ― 4.5 ― 5.5 V
Duty 50% ― ― 33.3
Duty 80% ― ― 26.4
Output Current IDS
Duty 100% ― ― 23.6
mA /ch
Input Voltage VIN ― GND ― V
DD V
Operating Clock Frequency fCLK Duty 50% ― ― 5 MHz
COUNTER·CLK
Clock Pulse Width tw CLK
50 ― ― ns
Data Set−Up Time tsetup
Data Hold Time thold
― 20 ― ― ns
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ELECTRICAL CHARACTERISTICS (Ta = 25°C, VDD = 5.5 V)
CHARACTERISTIC SYMBOL
TEST
CIR−
CUIT
TEST CONDITION MIN TYP. MAX UNIT
“H” Level VIH ― ― 3.5 ― VDD
+ 0.4
Input Voltage
“L” Level VIL ― ― −0.4 ― 1.5
V
WRITE·CLK
E·CLK, RESET
WRITE· E
IINH ― V
IN = 0 V, VDD = 5 V −34 −70 −145
Input Current
PWM IINL ― V
IN = 5 V, VDD = 5 V 34 70 145
µA
IDS = 80 mA ― ― 960
Output Voltage VDS ― OA1~OF8
IDS = 50 mA ― ― 600
mV
Output On Resistor RON ― I
DS = 50 mA ― ― 12.0 Ω
Output Leak Current IOZ ― V
DS = 30 V ― ― 10 µA
Quiescent Current IDD ― ― ― ― 20 µA
Operating Supply Current IDDopr ― VDD = 5 V, fCLK = 5MHz
Output OPEN ― ― 5 µA
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SWITCHING CHARACTERISTICS (VDD = 5.5 V, VDS = 26 V, Ta = 25°C)
CHARACTERISTIC SYMBOL TEST CONDITION MIN TYP. MAX UNIT
Maximum Operating Clock Frequency fMAX Duty 50% 10 ― ― MHz
CLK−OUTn , WRITE·CLK−OUTn ― 80 ―
RESET −OUTn ― 100 ―
COUNTER, CLK−OUTn
(Note)
― 110 ―
OUT· E−OUTn , WRITE· E−OUTn
E·CLK−OUTn ― 100 ―
Propagation
Delay Time
“L”−”H”
MMV / E−OUTn
tpLH
― 130 ―
CLK−OUTn , WRITE·CLK−OUTn ― 60 ―
RESET −OUTn ― 100 ―
COUNTER, CLK−OUTn (Note) ― 90 ―
OUT· E−OUTn , WRITE· E−OUTn
E·CLK−OUTn ― 70 ―
Propagation
Delay Time
“H”−”L”
MMV / E−OUTn
tpHL
― 80 ―
Minimum Clock Pulse Width tw
Duty 50%
VIN (H) = 4.5 V
VIN (L) = 0 V
RL = 375 Ω
CL = 15 pF
25 ―
DATA−OUT / PWM
DATA−CLK
Data Set Up Time
OUT· E−E·CLK
tsetup ― ― 10 ―
DATA−OUT / PWM
DATA−CLK
Data Hold Time
OUT· E−E·CLK
thold ― ― 10 ―
ns
COUNTER·CLK
Maximum Rise Time
CLK
tr ― ― ― 1
COUNTER·CLK
Maximum Fall Time
CLK
tf ― ― ― 1
Output Rise Time tor ― ― 0.02 1
Output Fall Time
OUTn
tof ― ― 0.05 0.4
µs
MMV Pulse Width tMMV ― ― 3 ― ms
Note: COUNTER DATA = F
PRECAUTIONS for USING
This IC does not integrate protection circuits such as overcurrent and overvoltage protectors.
Thus, if excess current or voltage is applied to the IC, the IC may be damaged. Please design the IC so that
excess current or voltage will not be applied to the IC.
Utmost care is necessary in the design of the output line, VCC and GND line since IC may be destroyed due to
short−circuit between outputs, air contamination fault, or fault by improper grounding.
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PACKAGE DIMENSIONS
QFP80−P−1420−0.80C Unit: mm
Weight: 1.53 g (Typ.)
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• TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor
devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical
stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of
safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of
such TOSHIBA products could cause loss of human life, bodily injury or damage to property.
In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as
set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and
conditions set forth in the “Handling Guide for Semiconductor Devices,” or “TOSHIBA Semiconductor Reliability
Handbook” etc..
• The TOSHIBA products listed in this document are intended for usage in general electronics applications
(computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances,
etc.). These TOSHIBA products are neither intended nor warranted for usage in equipment that requires
extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or
bodily injury (“Unintended Usage”). Unintended Usage include atomic energy control instruments, airplane or
spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments,
medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in this
document shall be made at the customer’s own risk.
• The products described in this document are subject to the foreign exchange and foreign trade laws.
• The information contained herein is presented only as a guide for the applications of our products. No
responsibility is assumed by TOSHIBA CORPORATION for any infringements of intellectual property or other
rights of the third parties which may result from its use. No license is granted by implication or otherwise under
any intellectual property or other rights of TOSHIBA CORPORATION or others.
• The information contained herein is subject to change without notice.
000707EB
A
RESTRICTIONS ON PRODUCT USE
