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參數(shù)資料
| 型號(hào)： | ST9294 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 24K ROM HCMOS MCU WITH ON SCREEN DISPLAY AND CLOSED-CAPTION DATA SLICER |
| 中文描述： | 足金光盤HCMOS微控制器屏幕顯示和閉路字幕數(shù)據(jù)限幅器 |
| 文件頁(yè)數(shù)： | 4/6頁(yè) |
| 文件大?。?/td> | 99K |
| 代理商： | ST9294 |
Control of TV settings is able to be made with up to
eight 8-bit PWM outputs, with a frequency maxi-
mum of 23,437Hz at 8-bit resolution (INTCLK =
12MHz). Low resolutions with higher frequency op-
eration can be programmed.
In addition there is a 3 channel Analog to Digital Con-
verter with integral sample and hold, fast 5.75
μ
s con-
version time and 6-bit guaranteed resolution.
1.2 PIN DESCRIPTION
VSYNC
. Vertical Synch.Vertical video synchroni-
sation input to OSD. Positive or negative polarity.
HSYNC
. Horizontal Synch.Horizontal video syn-
chronisation input to OSD. Positive or negative po-
larity.
CCVideo
. Composite Video Input Input to Data
Slicer for Closed Caption extraction, 1V
±
6dB or
2V
±
3dB.
PLLF
. PLL Filter input.Filter input for the OSD for
PLL feed-back.
PLLR
. PLL Resistor connection pin. For resistor
connection to select the PLL gain adjust.
RESET
. Reset (input, active low).The ST9 is initial-
ised by the Reset signal. With the deactivation of RE-
SET, program execution begins from the Program
memory location pointed to by the vector contained
in program memory locations 00h and 01h.
GENERAL DESCRIPTION
(Continued)
OSCIN, OSCOUT
. Oscillator (input and output).
These pins connect a parallel-resonant crystal
(24MHz maximum), or an external source to the
on-chip clock oscillator and buffer. OSCIN is the in-
put of the oscillator inverter and internal clock gen-
erator; OSCOUT is the output of the oscillator
inverter.
AV
DD
. Analog V
DD
of PLL. This pin must be tied to
V
DD
externally to the ST9294.
V
DD
. Main Power Supply Voltage (5V
±
10%)
V
SS
. Digital Circuit Ground.
P0.0-P0.7, P2.0-P2.5, P3.0-P3.6, P4.0-P4.7,
P5.0-P5.1
(J suffix)
P0.0-P0.7, P1.0-P1.7, P2.0-P2.5, P3.0-P3.7,
P4.0-P4.7, P5.0-P5.3
(N suffix) I/O Port Lines (In-
put/Output, TTL or CMOS compatible).31/42 lines
grouped into I/O ports, bit programmable under
program control as general purpose I/O or as Alter-
nate functions (see next section).
P4.0 - P4.7 are high voltage (12V) open drain
1.2.1I/O Port Alternate Functions.
Each pin of the I/O ports of the ST9294 may as-
sume software programmable Alternative Func-
tions as shown in the Pin Configuration Drawings.
Table 1 shows the Functions allocated to each I/O
Port pin.
ST9294
4/6
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