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Número de pieza | SAA5647 | |
Descripción | Enhanced TV microcontrollers with On-Screen Display OSD | |
Fabricantes | NXP Semiconductors | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de SAA5647 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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DATA SHEET
SAA56xx
Enhanced TV microcontrollers with
On-Screen Display (OSD)
Product specification
Supersedes data of 2001 Feb 13
File under Integrated Circuits, IC02
2001 Dec 13
1 page Philips Semiconductors
Enhanced TV microcontrollers with
On-Screen Display (OSD)
5 BLOCK DIAGRAM
Product specification
SAA56xx
handbook, full pagewidth
I2C-bus, general I/O
TV CONTROL
AND
INTERFACE
ROM
(128 or 192-kbyte)
MICROPROCESSOR
(80C51)
SRAM
256-byte
DRAM
(14-kbyte)
MEMORY
INTERFACE
CVBS
DATA
CAPTURE
CVBS
DATA
CAPTURE
TIMING
DISPLAY
R
G
B
VDS
DISPLAY
TIMING
GSA023
HSYNC
VSYNC
2001 Dec 13
Fig.1 Block diagram (top level architecture).
5
5 Page Philips Semiconductors
Enhanced TV microcontrollers with
On-Screen Display (OSD)
Product specification
SAA56xx
8.2 ROM protection and verification
SAA56xx devices have a set of security bits allied with
each section of the device, i.e. Program ROM, Character
ROM and Packet 26 ROM. The security bits are used to
prevent the ROM from being overwritten once
programmed, and also the contents being verified once
programmed.
The security bits can be programmed once only and
cannot be erased.
The SAA56xx security bits are set as shown in Fig.4 for
production programmed devices and are set as shown in
Fig.5 for production blank devices.
handbook, full pagewidthMEMORY
PROGRAM ROM
(128 or 192 kbytes)
CHARACTER ROM
(12 kbytes)
PACKET 26 ROM
(4 kbytes)
SECURITY BITS SET
USER ROM PROGRAMMING
DISABLED
VERIFY
ENABLED
DISABLED
ENABLED
DISABLED
ENABLED
GSA036
Fig.4 Security bits for production programmed devices.
handbook, full pagewidthMEMORY
PROGRAM ROM
(128 OR 192 kbytes)
CHARACTER ROM
(12 kbytes)
PACKET 26 ROM
(4 kbytes)
SECURITY BITS SET
USER ROM PROGRAMMING
ENABLED
VERIFY
ENABLED
ENABLED
ENABLED
ENABLED
ENABLED
GSA037
2001 Dec 13
Fig.5 Security bits for production blank devices.
11
11 Page |
Páginas | Total 30 Páginas | |
PDF Descargar | [ Datasheet SAA5647.PDF ] |
Número de pieza | Descripción | Fabricantes |
SAA5645 | Enhanced TV microcontrollers with On-Screen Display OSD | NXP Semiconductors |
SAA5645HL | Enhanced TV microcontrollers with On-Screen Display OSD | NXP Semiconductors |
SAA5647 | Enhanced TV microcontrollers with On-Screen Display OSD | NXP Semiconductors |
SAA5647HL | Enhanced TV microcontrollers with On-Screen Display OSD | NXP Semiconductors |
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