SGS Thomson Microelectronics STV9424, STV9423, STV9422 Datasheet
MULTISYNCON-SCREENDISPLAY FOR MONITOR
.
CMOSSINGLECHIP OSDFOR MONITOR
.
BUILT IN 1 KBYTE RAM HOLDING:
- PAGES’DESCRIPTORS
- CHARACTER CODES
- USERDEFINABLE CHARACTERS
.
128 ALPHANUMERIC CHARACTERS OR
GRAPHIC SYMBOLS IN INTERNAL ROM
(12 x18 DOTMATRIX)
.
UP TO 26 USERDEFINABLE CHARACTERS
.
INTERNALHORIZONTALPLL(15TO120kHz)
.
PROGRAMMABLE VERTICAL HEIGHT OF
CHARACTER WITH A SLICEINTERPOLATOR
TO MEETMULTI-SYNCHREQUIREMENTS
.
PROGRAMMABLE VERTICAL AND HORIZONTALPOSITIONING
.
FLEXIBLESCREEN DESCRIPTION
.
CHARACTER BY CHARACTER COLOR SELECTION(UP TO 8 DIFFERENT COLORS)
.
PROGRAMMABLE BACKGROUND (COLOR,
TRANSPARENTORWITH SHADOWING)
.
CHARACTER BLINKING
.
2-WIRES ASYNCHRONOUS SERIAL MCU
INTERFACE (I
.
8 x 8BITS PWM DACOUTPUTS
.
SINGLEPOSITIVE5V SUPPLY
2
C PROTOCOL)
STV9422
STV9424
SHRINK 24
(Plastic Package)
ORDER CODE : STV9422
DESCRIPTION
The STV9422/24is an ONSCREEN DISPLAYfor
monitor.It is built as a slave peripheralconnected
to a host MCU via a serial I
display memory, controls all the display attributes
and generatespixels from the data read in its on
chip memory. The line PLL and a special slice
interpolator allow to have a display aspect which
doesnotdependon thelineandframefrequencies.
2
C interface allows MCU to make transparent in-
I
ternal accessto preparethe next pages duringthe
display of the current page. Togglefrom one page
to anotherby programmingonlyone register.
8 x 8 bits PWM DAC are available to provideDC
voltage control to otherperipherals.
The STV9422/24providestheuseraneasy to use
and cost effectivesolutiontodisplayalphanumeric
or graphicinformation onmonitorscreen.
October 1995
2
C bus. It includes a
DIP16
(Plastic Package)
ORDER CODE : STV9424
1/15
STV9422 - STV9424
PIN CONNECTIONS
PWM0
PWM1
FBLK
VSYNC
HSYNC
V
PXCK
CKOUT
XTAL OUT
XTALIN
PWM2
SDIP24 (STV9422)
1
2
3
4
5
6
DD
7
8
9
10
11
12
24
PWM7
23
PWM6
22
TEST
21
B
20
G
19
R
18
GND
17
RESET
16
SDA
15
SCL
14
PWM5
13
PWM4PWM3
XTAL OUT
DIP16 (STV9424)
FBLK
V-SYNC
H-SYNC
V
DD
PXCK
CKOUT
XTAL IN
1
2
3
4
5
6
7
8
PIN DESCRIPTION
Symbol
PWM0 1 - O DAC0 Output
PWM1 2 - O DAC1 Output
FBLK 3 1 O Fast Blanking Output
V-SYNC 4 2 I Vertical Sync Input
H-SYNC 5 3 I HorizontalSync Input
V
DD
PXCK 7 5 O Pixel Frequency Output
CKOUT 8 6 O Clock Output
XTAL OUT 9 7 O Crystal Output
XTAL IN 10 8 I Crystal or Clock Input
PWM2 11 - O DAC2 Output
PWM3 12 - O DAC3 Output
PWM4 13 - O DAC4 Output
PWM5 14 - O DAC5 Output
SCL 15 9 I Serial Clock
SDA 16 10 I/O Serial Input/output Data
RESET 17 11 I Reset Input (ActiveLow)
GND 18 12 S Ground
R 19 13 O Red Output
G 20 14 O Green Output
B 21 15 O Blue Output
TEST 22 16 I Reserved (grounded in Normal Operation)
PWM6 23 - O DAC6 Output
PWM7 24 - O DAC7 Output
Pin Number
SDIP24 DIP16
I/O Description
6 4 S +5V Supply
TEST
16
B
15
G
14
R
13
GND
12
RESET
11
SDA
10
SCL
9
9422-01.EPS / 9424-01.EPS
9422-01.TBL
2/15
BLOCK DIAGRAMS
STV9422
XTALINXTAL
OUT PXCK TEST
V
DD
10 9 7 6 22
STV9422 - STV9424
24
PWM7
CKOUT
HSYNC
VSYNC
RESET
STV9424
8
5
4
17
CKOUT
HSYNC
HORIZONTAL
DIGITAL PLL
4KROM
(128 characters)
1K RAM
Page Descriptors +
User Defined Char.
Address/Data
DISPLAY
CONTROLLER
2
I C BUS
INTERFACE
19 20 21 3 18 15 16
R G B FBLK GND SCL SDA
XTALINXTAL
OUT
PXCK TEST
78
6
3
HORIZONTAL
DIGITAL PLL
V
DD
45
4KROM
(128 characters)
23
14
13
PWM
12
11
2
1
STV9422
16
1K RAM
Page Descriptors +
User Defined Char.
PWM6
PWM5
PWM4
PWM3
PWM2
PWM1
PWM0
9422-02.EPS
VSYNC
RES ET
2
11
STV9424
Address/Data
DISPLAY
CONTROLLER
1
1213 14 15
INTERFACE
910
R G B FBLK GND SCL
2
I C BUS
SDA
9424-02.EPS
3/15
STV9422 - STV9424
ABSOLUTEMAXIMUM RATINGS
Symbol Parameter Value Unit
V
DD
V
IN
T
oper
T
stg
ELECTRICAL CHARACTERISTICS
=5V,VSS=0V,TA=0 to70°C, F
(V
DD
Symbol Parameter Min. Typ. Max. Unit
SUPPLY
V
DD
I
DD
INPUTS
SCL, SDA, TEST, RESET, V-SYNC and H-SYNC
V
IL
V
IH
I
IL
OUTPUTS
R, G, B, FBLK, SDA, CKOUT, PXCK and PWMi(i = 0 to 7)
V
OL
V
OH
For R, G, Band FBLK outputs,see Figure 1.
Supply Voltage -0.3, +7.0 V
Input Voltage -0.3, +7.0 V
Operating Ambient Temperature 0, +70 °C
Storage Temperature -40, +125 °C
= 8 to 15MHz, TEST = 0 V,unless otherwisespecified)
XTAL
Supply Voltage 4.75 5 5.25 V
Supply Current - - 50 mA
Input LowVoltage 0.8 V
Input HighVoltage 0.8V
DD
Input LeakageCurrent -20 +20 µ
Output Low Voltage(IOL= 1.6mA) 0 0.4 V
Output HighVoltage (IOL= -0.1mA) 0.8V
DD
V
DD
9422-02.TBL
V
A
V
9422-03.TBL
Figure 1 : TypicalR, G, B OutputsCharacteristics
(V)
V
,
V
OH
V
OL
I (A)
10
-4
10
-3
10
-2
10
-1
5
2.5
0
V
10
OL OH
-5
9422-17.EPS
4/15
STV9422 - STV9424
TIMINGS
Symbol Parameter Min. Typ. Max. Unit
OSCILATOR INPUT : XTI (seeFigure 2)
t
WH
t
WL
f
XTAL
f
PXL
RESET
t
RES
R, G,B, FBLK (C
t
R
t
F
t
SKEW
2
I
C INTERFACE : SDA AND SCL (see Figure 3)
f
SCL
t
BUF
t
HDS
t
SUP
t
LOW
t
HIGH
t
HDAT
t
SUDAT
t
F
t
R
Note 1 : These parameters are not tested on each unit. They are measured during our internal qualification procedure which includes
Clock High Level 20 ns
Clock LowLevel 20 ns
Clock Frequency 6 15 MHz
Pixel Frequency 40 MHz
Reset Low LevelPulse 4
= 30pF)
LOAD
Rise Time (Note 1) 5 ns
Fall Time (Note 1) 5 ns
Skew between R, G,B, FBLK (Note 1) 5 ns
SCL Clock Frequency 0 1 MHz
Time the bus must be free between 2 access 500 ns
Hold Time forStart Condition 500 ns
Set upTime for Stop Condition 500 ns
The LowPeriod of Clock 400 ns
The High Periodof Clock 400 ns
Hold Time Data 0 ns
Set upTime Data 375 ns
Fall Time of SDA 20 ns
Rise Time of Both SCL and SDA
characterization on batches comming from corners of our processesand also temperaturecharacterization.
Depend on the pull-up resistor
and the loadcapacitance
µs
9422-04.TBL
Figure2
XTI
Figure 3
STOP START DATA STOP
t
t
WL
SDA
t
WH
SCL
9422-03.EPS
BUF
t
HDS
t
HIGH
t
SUDAT
t
HDAT
t
SUP
t
LOW
9422-04.EPS
5/15
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