Seiko LTPA245 Series, Справочное руководство

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4-2
Table 4-2 Thermal Head Control Terminal Assignments
*1
Terminal
Number
Signal
Name
Input/
Output
Function
1 PS Output Paper detector receiving photo collector output
2 VPS Input Paper detector luminous portion
3 GND
!
Paper detector GND
4 Vp ! Thermal head drive voltage
5 Vp ! Thermal head drive voltage
6 DAT Input Print data input (serial input)
7 DST6 Input Thermal head print activation instruction signal
8 DST5 Input Thermal head print activation instruction signal
9 DST4 Input Thermal head print activation instruction signal
10 GND ! GND
11 GND
!
GND
12 GND
!
GND
13 GND ! GND
14 TH Output Thermistor
15 DST3 Input Thermal head print activation instruction signal
16 DST2 Input Thermal head print activation instruction signal
17 DST1 Input Thermal head print activation instruction signal
18 Vdd ! Logic power supply
19 CLK Input Synchronizing signal for print data transfer
20 LATCH Input Print data latch (memory storage)
21 DAT0 Output Print data output (serial output)
22 Vp
!
Thermal head drive voltage
23 Vp ! Thermal head drive voltage
24 A Input Motor drive signal
25 B Input Motor drive signal
26 A Input Motor drive signal
27 B Input Motor drive signal
28
*2
NC ! No connection
(Note)
*1
The assignments of terminal numbers 1 to 27 are common to the LTPA245A and the LTPA245B.
*2
When either LTPA245B or LTPA245C is used, terminal numbers 1 to 28 must be assigned.