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參數(shù)資料
| 型號： | SDA5273C-2CP |
| 廠商： | SIEMENS AG |
| 英文描述： | ICs for Consumer Electronics MEGATEXT and MEGATEXT PLUS ICs |
| 中文描述： | 集成電路消費(fèi)電子MEGATEXT和MEGATEXT普樂士集成電路 |
| 文件頁數(shù)： | 20/30頁 |
| 文件大小： | 142K |
| 代理商： | SDA5273C-2CP |
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SDA 5273 / 75
SDA 5273-2 / 75-2
Semiconductor Group
20
1997-09-01
Characteristics
(cont’d)
T
A
= 0 to 70
°
C
Parameter
Symbol
Limit Values
Unit
Test Condition
min.
typ.
max.
Reset/Chip Initialization
A power-on reset or a reset pulse at pin RES lead to a hardware reset and a software initialization
of registers and internal DRAM. During initialization bus transfers are not allowed.
At / after power-on a reset pulse at pin RES is necessary. RES may return to 0 after the supply
voltage reached its lower limit for chip function (4.7 V). This may be achieved by a capacitor
C
between RES and
V
DD
and by a resistor
R
between RES and
V
SS
. The dimensions of
R
and
C
depend on the worst case rise time of
V
DD
.
Initialization time after power-
on or falling edge of RES
If the supply voltage drops below
V
DD min
, the IC has to be reset by pin RES.
Pulse width RES
100
t
INIT
25
ms
V
DD
greater 4.7 V
ns
High level at pin RES causes chip reset.
In rare cases, the IC may remain in a permanent reset state after power up, depending on the
applicational context. After power up, the software should check proper operation. In case the
Megatext does not react properly, power supply should be switched off for at least 3 s. After that,
power supply can be switched on again.
Other Items
Horizontal frequency pull-in
range of CVBS-PLL:
15
15.625 16.2
kHz
PAL
20.48 MHz crystal
15.2
15.748 16.3
kHz
NTSC
20.48 MHz crystal
Horizontal frequency pull-in
range of display-PLL:
15
15.625 16.2
kHz
20.48 MHz crystal
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SDA5273C-2CS | ICs for Consumer Electronics MEGATEXT and MEGATEXT PLUS ICs |
| SDA5273-2 | ICs for Consumer Electronics MEGATEXT and MEGATEXT PLUS ICs |
| SDA5273-2P | Cable ID Markers RoHS Compliant: Yes |
| SDA5273-2S | ICs for Consumer Electronics MEGATEXT and MEGATEXT PLUS ICs |
| SDA5273 | ICs for Consumer Electronics MEGATEXT and MEGATEXT PLUS ICs |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SDA5273C-2CS | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:ICs for Consumer Electronics MEGATEXT and MEGATEXT PLUS ICs |
| SDA5273P | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:ICs for Consumer Electronics MEGATEXT and MEGATEXT PLUS ICs |
| SDA5273S | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:ICs for Consumer Electronics MEGATEXT and MEGATEXT PLUS ICs |
| SDA5275 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:ICs for Consumer Electronics MEGATEXT and MEGATEXT PLUS ICs |
| SDA5275-2 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:ICs for Consumer Electronics MEGATEXT and MEGATEXT PLUS ICs |
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