Panasonic KX-B620 - CPU Pin Function

KX-B620 Series
KX-B520 Series
CPU pin function are as follows:
Pin
|Terminal|
¢,
it
ere
input
pe
Bae nalts Signal Function output Description See
<a 2 eb : When the reset signal is input to the
1 RESET RESET. Reset signa] Input i" | CPU, the CPU resets all signals.
et aoe er - eee ; é When this signal is input, the CPU
2 INT INT ccD synchronizing interrupt signal in | starts one line Séquence. .
3 AVss GROUND | CPU analog ground GROUND
4
|
VReF
+5V
Analog
standard
power
supply
Supply
voltage
is
+5
volts.
| j ii : When the. advance key is pressed, - this},
5 KO FEED Screen feed, signal in signal becomes “H”.
, rie, stead : When the copy key is pressed, this signal
8 Kt COPY Copy signal Lae ent g eign ae
7 K2 THERM | ‘Temperature of the thermal head in, ss of the thermal head is
a K3 VPEAK CCD peak voltage in CCD peak voltage is input.
9 AVpp +5V Analog power supply Supply voltage is +5 volts.
10 so SMB Screen feed motor B phase signal out | This signal. excites B phase coil.
11
$1
SMA
Screen
feed
motor
A
phase
signal
out
.|
This
signal
excites
A
phase
coil.
12
$2
SMB
Screen.
feed
motor
B
phase
signa!
out
|
This
signal
excites
B
phase
coil.
13 $3 SMA Screen feed motor A phase signal out | This signal excites A phase coil.
14 | $4 PMB Paper feed motor B phase signal out | This signal excites B phase coil.
15 $5 Paper feed motor A phase signal -| This signal excites A phase coil. .
$6 PMB Paper feed motor B phase signal ~ out | This signal excites B phase coil.
Paper feed motor A phase signal This signal excites A phase coil. 7
pas When this signal becomes “L”, CCD
DO
19
20 CNVss | GROUND
“GROUND
CCD data enable signal
Blank area start signal
GROUND
CPU digital ground
out | data is enable.
When this signal becomes “H”, 1C109
stores all white waveform to the
memory.
GROUND
“Jerounp
This signal preheats the lamp.
22 D2 . LAMPPRE |Lamp.preheat signal
23 D3_| CAMPTON | Lamp turn on signal
24 D4
This signal turns on the lamp.
-ENDLED | Paper end LED drive signal
SP101 Selectable paper size
Not used
When this signal becomes “L”, paper end
LED lights.
When. ‘the screen -comes to. home
position, this signal becomes “L”.
When CCD. gain is insufficient, this
signal becomes “H”.
When the thermal paper is exhausted,
this signal becomes “H”.