
2.3.1.2 Power ON/OFF Reset
Figure 2-24 shows the reset circuit and Figure 2-26 shows the waveform the this operation.
When the power is switched on and Vx rises, voltage is applied to the integration circuit (composed of R47,
The voltage at
increases and when
reaches
V
P
the output switches from
to high
(Schmitt trigger), and the reset circuit in
the
sets the ROUT signal high (Figure 2-26,
reset
(ROUT) signal is sent to the
on the
board and to the outside.
When the power is switched off, the voltage at
decreases and, when
reaches
the
switches from high to low, and the reset circuit
in the
sets the ROUT signal low. (D32 is a diode used
to discharge
Vx
THLD
ROUT
AT POWER
AT POWER OFF
(v)
I
I
VP
L . - . - – . – – – – – ’ ~ _ _ – – _
– – – – – – – – – – – –
0
’
I
1
11
--1
RESET
CPU OPERATES
RESET
Figure 2-26. Power ON/OFF Reset Timing
-.
2-30
Содержание LQ-1060
Страница 1: ...EPSON TERMINAL PRINTER L Q 8 6 0 1 0 6 0 TECHNICAL MANUAL ...
Страница 5: ...REVISION TABLE REVISION DATE ISSUED I CHANGE DOCUMENT I I 1st issue I v ...
Страница 68: ...cc o REV A N N n 1 cc b I al cc u co n4 2 1 Figure 2 14 Main Switching 2 21 ...
Страница 79: ...REV A Table 2 20 State of Module 1 1 I W stay E H H L H d O s H H 4 2 32 ...
Страница 203: ...Figure 5 6 MONPS MONPSE Board Voltage Waveforms 5 17 ...
Страница 204: ...REV A Fiaure 5 6 MONPS MONPSE Board Voltage Waveforms z L 5 18 ...
Страница 205: ...Figure 5 6 MONPS MONPSE Board Voltage Waveforms 5 19 ...
Страница 217: ... n 3 m I BUS CONTROL 1 LJ Pc II SYSTEM CONTROL I I L 1 I PERIPHERAL BUS IIF u lJ Figure A 2 PD78213 Block Diagram A 3 ...
Страница 248: ...REV A A 3 DRAWINGS 3 J32 J TI g 4 Figure A 27 MONPS Board Component Layout A 34 ...
Страница 249: ... J30 33r J32 d m b13 G a TI 7 IC20 r El m J24 C2 L cl mow B L U E u Figure A 28 MONPSE Board Component Layout A 35 ...
Страница 250: ... 2 1 1 1 1 I A b 2 Ozaz 1202 C O ZZH Z UOEE vu I 1 Figure A 29 MONPS Board Circuit Diagram ...
Страница 251: ...REV A 1 UXZO xl OX 9 xl Onz b 8M 118 en A N J 93 T 818 Figure A 30 MONPSE Board Circuit Diagram A 37 ...
Страница 252: ...L t g Figure A 31 JUNMM Board Component Layout A 38 ...