27
AVR-5803/AVC-A1SR
M35015-210SP Terminal Function
Pin No.
Symbol
Name
I/O
Function
1
OSC1
Osc. circuit ext.
I
External terminal for indication oscillator circuit. Standard OSC. freq. is approx. 7MHz.
2
OSC2
terminal.
O
With this OSC. freq., decides horizontal indicatin and character width.
3
CS
Chip select input
I
Chip select terminal and turns to “L” when transfer serial data.
Hysteresis input. Pull up resistor is built-in.
4
SCK
Serial clock input
I
Takes in serial data of SIN at SCK rise when CS terminal is in “L”.
Hysteresis input. Pull up rersist is built-in.
5
SIN
Serial data input
I
Serial input of register for indication control and data, and address for indication data
memory. Hysteresis input. Pull up rersistor is built-in.
6
AC
Auto-clear input
I
Resets internal circuit of IC at “L” mode.
Hysteresi input. Pull up resistor is built-in.
7
V
DD2
Power supply
Power supply terminal of analog system. Connect to +5V.
8
CVIDEO
Combined
video output
O
Output terminal of combined video signal. Outputs 2Vp-p combined signal. Character
output, etc. Overlap CVIN signal and outputs at superimpose.
9
LECHA
Character level
input
I
Input terminal deciding character output level in combined video signal. color of character
is white.
10
CVIN
Combined video
input
I
Input terminal of external combined video signal.
Character output etc. overlap this external combined video signal.
11
Vss
Ground
Ground terminal. Connect to GND.
12
P0
Output port p0
O
General output or character background signal BL NK1* output is switchable.
Polarity can be selected at ROM mask.
13
P1
Output port P1
O
General output or character background signal CO1* output is switchable.
Polarity can be selected at ROM mask.
14
P2
Output port P2
O
General output or character background signal BLNK2* output is switchable.
Polarity can be selected at ROM mask.
15
P3
Output port P3
O
General output or character background signal CO2* output is switchable.
Polarity can be selected at ROM mask.
16
OSCOUT
O
Terminal for external use of sync signal OSC. circuit. Use the freq.: 14.32MHz at NTSC
17
OSCIN
I
system, 17.73MHz at PAL. system, 14.30MHz at MPAL system.
18
HOR*
Horizontal sync
signal
I
Inputs horizontal sync signal.
Hysteresis input.
19
VERT*
Vertical sync
signal
I
Input vertical sync signal. Hysteresis input. Polarity can be selected at ROM mask.
20
V
DD1
Power supply
Power supply terminal of digital system. Connect to +5V.
Ext. terminal
for sync sig.
OSC. Circuit
1
2
3
4
5
6
7
8
16
15
14
13
9
10
11
12
20
19
18
17
V
DD1
VERT*
HOR*
OSCIN
OSCOUT
P3
P2
P1
P0
Vss
OSC1
OSC2
CS
SCK
SIN
AC
V
DD2
CVIDEO
LECHA
CVIN
3
4
5
20
6
11
7
1
2
19
18
17
16
8
9
10
12
13
14
15
CS
SCK
SIN
V
DD1
AC
V
SS
V
DD2
OSC1 OSC2
VERT*
HOR*
INPUT
CONTROL
CIRCUIT
DATA
CONTROL
CIRCUIT
ADDRESS
CONTROL
CIRCUIT
INDICATION
OSCILLATOR
TIMING
GENERATOR
INDICATION
CONTROL
REGISTER
INDICATION RAM
INDICATION CHARACTER ROM
BLINKING CIRCUIT
SYNC SIGNAL
SWITCHING CIRCUIT
H COUNTER
INDICATION LOCATION
DETECTION CIRCUIT
READ OUT ADDRESS
CONTROL CIRCUIT
INDICATION
CONTROL CIRCUIT
SHIFT REGISTER
SYNC SIGNAL DIS-
CRIMINATING CIRCUIT
OSC CIRCUIT
FOR SYNC SIGNAL
GENERATION
TIMING
GENERATOR
NTSC
VIDEO OUTPUT
CIRCUIT
OSCIN
OSCOUT
CVIDEO
LECHA
CVIN
P0
P1
P2
P3
M35015-210SP (IC302)
