This is preliminary information on a new product in development or undergoing evaluation. Details are subject to change without notice.
Version 4.0
February 2000
1/16
STV9432
100MHz OSD FOR MONITOR
FEATURE
100MHz MAX. PIXEL CLOCK, AVAILABLE FOR
ANY LINE FREQUENCY BETWEEN 15 AND
140 kHz
12 x 18 CHARACTER ROM FONT INCLUDES:
- 240 MONOCOLOR CHARACTERS
- 16 MULTICOLOR CHARACTERS
CHARACTER FLASHING
UP TO 1K CHARACTERS TEXT DISPLAY
ULTRA HIGH FREQUENCY PLL FOR JITTER-
FREE DISPLAY
FLEXIBLE DISPLAY:
- ANY CHARACTER WIDTH AND HEIGHT
- ANYWHERE IN THE SCREEN
SINGLE BYTE CHARACTER CODES AND
COLOR LOOK-UP TABLE FOR EASY PRO-
GRAMMING AND FAST ACCESS
CHARACTER FLIP OPERATIONS
WIDE DISPLAY WINDOW ALLOWS PATTERN
GENERATION FOR FACTORY ADJUSTMENTS
I
2
C BUS MCU INTERFACE
DESCRIPTION
Connected to a host MCU via a serial I
2
C Bus, the
STV9432TA is a multifunction slave peripheral
device integrating the ON-Screen-Display block.
The On-screen Display (OSD) includes a MASK
PROGRAMMABLE ROM that holds the CUSTOM
CHARACTER FONT, a 1Kbytes RAM that stores
the code strings of the different lines of text to be
displayed, and a set of registers to program char-
acter sizes and colors. A built-in digital PLL, oper-
ating at very high frequency, provides an accurate
display without visible jitter for a wide line fre-
quency range from 15 to 140 kHz.
.
PIN CONNECTIONS
SDIP24 (Plastic Package)
ORDER CODE: STV9432
1
2
3
4
5
6
7
8
9
10
11
12
20
19
18
17
16
15
14
13
24
23
22
21
N.C
N.C
N.C
ADCREF
AGND
TEST
FILTER
HFLY
N.C
DV
DD
DV
SS
ROUT
GOUT
BOUT
FBLK
SDA
SCL
HS
VS
XTI
XTO
OV
SS
OV
DD
AV
DD
1
STV9432
2/18
1 - PIN DESCRIPTION
Pin Number
Symbol
Type
Description
1
FILTER
I/O
PLL Filter
2
AGND
Power
Analog Ground
3
SDA
I/O
I
2
C Bus Serial Data
4
SCL
I
2
C Bus Serial Clock
5
HS
Horizontal Sync Input
6
VS
Vertical Sync Input
7
HFLY
Horizontal Flyback Input
8
N.C.
Not Connected
9
DV
DD
Power
Digital +5V Power Supply
10
DV
SS
Power
Digital Ground
11
XTI
Crystal Oscillator Input
12
XTO
O
Crystal Oscillator Output
13
OV
SS
Power
Ground for the RGB Outputs
14
ROUT
O
Red Output
15
GOUT
O
Green Output
16
BOUT
O
Blue Output
17
FBLK
O
Fast Blanking Output
18
OV
DD
Power
+5V Supply for the RGB Outputs
19
AV
DD
Power
Analog +5V Power Supply
20
N.C.
Not Connected
21
N.C.
Not Connected
22
N.C.
Not Connected
23
ADCREF
I/O
ADC Reference Voltage Pin
24
TEST
I/O
Pin must be connected to ground
STV9432
3/18
2 - BLOCK DIAGRAM
3 - ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
AV
DD
, DV
DD
, OV
DD
Supply Voltage
-0.3, +6.0
V
V
IN
Input Voltage
V
SS
- 0.3, V
DD
+ 0.3
V
T
oper
Operating Temperature
0, +70
o
C
T
stg
Storage Temperature
-40, +125
o
C
OSCILLATOR
PLL
VOLTAGE REGULATOR
POWER-ON RESET
I
2
C BUS
INTERFACE
CHARACTER
FONT ROM
1k BYTES RAM
18
TEST
FILTER
5
HFLY
4
VS
3
6
22
21
HS
N.C
N.C
N.C
N.C 20
ADCREF
3.3V
13
9
10
11
12
ROUT
GOUT
BOUT
FBLK
DISPLAY
CONTROLLER
1
2
SDA
SCL
7
DV
DD
8
DV
SS
19
AGND
AV
DD
17
16
15
14
23
XTI
XTO
OV
SS
OV
DD
STV9432
24
STV9432
4/18
4 - ELECTRICAL CHARACTERISTICS
(V
DD
= 5V, V
SS
= 0V, GND = 0V, T
A
= 0 to 70
o
, unless otherwise specified)
Symbol
Parameter
Min.
Typ.
Max.
Unit
SUPPLY
AV
DD
, DV
DD
, OV
DD
Supply Voltage
4.75
5
5.25
V
AI
DD
+ DI
DD
+ OI
DD
Analog and Digital Supply Current
-
-
150
mA
INPUTS (SCL, SDA)
V
IL
Input Low Voltage
0.8
V
V
IH
Input High Voltage
2.4
V
I
IL
Input Leakage Current
-1
+1
A
INPUTS (HS, VS, HFLY)
V
IL
Input Low Voltage
0.8
V
V
IH
Input High Voltage
HS, VS
HFLY
2.4
3.6
V
V
HYST
Schmidt Trigger Hysteresis
0.4
V
I
PU
Pull-up Source Current (V
IN
= 0V)
100
A
HSIN
Horizontal Synchro Input Range
15
140
kHz
OUTPUTS (SDA open drain)
V
OL
Output Low Voltage (I
OL
= 3mA)
0
0.4
V
OUTPUTS (R, G, B, FBLK)
V
OL
Output Low Voltage (I
OL
= 3mA)
0
0.4
V
V
OH
Output High Voltage (I
OH
= 3mA)
0.8V
DD
V
DD
V
OSCILLATOR (XTI, XTO)
I
IL
XTI Input Source Current (V
IN
= 0V)
3
15
A
I
IH
XTI Input Sink Current (V
IN
= V
DD
)
3
15
A
V
IL
XTI Input Low Voltage
1.4
V
V
IH
XTI Input High Voltage
0.7V
DD
V
V
OL
XTI Output Low Voltage (I
OL
= 3mA)
0
0.4
V
V
OH
XTI Output High Voltage (I
OH
= 3mA)
0.8V
DD
V
DD
V
ADCREF
V
REF
Output Voltage Reference
3.3
V
POWER-ON RESET
DV
DDTH
Supply Threshold Level
3.6
V
STV9432
5/18
5 - TIMINGS
Note : These parameters are not tested on each unit. They are measured during our internal qualification procedure which
includes characterization on batches comming from corners of our processes and also temperature characteriza-
tion
Figure 1.
Symbol
Parameter
Min.
Typ.
Max.
Unit
OSCILLATOR
f
OSC
Clock Frequency
8
MHz
f
PXL
Pixel Frequency
100
MHz
R, G, B, FBLK (C
LOAD
= 30pF)
t
R
Rise Time (see Note 1)
5
ns
t
F
Fall Time (see Note 1)
5
ns
t
SKEW
Skew between R, G, B, FBLK
5
ns
I
2
C INTERFACE: SDA AND SCL (see
Figure 1
)
f
SCL
SCL Clock Frequency
0
400
kHz
t
BUF
Time the bus must be free between 2 access
500
ns
t
HDS
Hold Time for Start Condition
500
ns
t
SUP
Set up Time for Stop Condition
500
ns
t
LOW
The Low Period of Clock
400
ns
t
HIGH
The High Period of Clock
400
ns
t
HDAT
Hold Time Data
0
ns
t
SUDAT
Set up Time Data
500
ns
t
F
Fall Time of SDA
20
ns
t
R
Rise Time of both SCL and SDA
Depend on the pull-up resistor and the load
capacitance
SDA
SCL
STOP
START
DATA
t
BUF
t
HDAT
t
HDS
t
SUP
t
HIGH
t
LOW
STOP
t
SUDAT
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