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TDA9550 датащи(PDF) 61 Page - NXP Semiconductors

номер детали TDA9550
подробное описание детали  TV signal processor-Teletext decoder with embedded m-Controller
PDF  125 Pages
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производитель  PHILIPS [NXP Semiconductors]
домашняя страница  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

TDA9550 датащи(HTML) 61 Page - NXP Semiconductors

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2000 Jun 22
61
Philips Semiconductors
Tentative Device Specification
TV signal processor-Teletext decoder with
embedded
µ-Controller
TDA955X/6X/8X PS/N1 series
The memory and security bits are structured as follows:-
Table 30 Security bit structure
The security bits are set as follows for production programmed devices (i.e. programmed by Philips):-
The security bits are set as follows for production un-programmed (blank) devices:-
MEMORY
SECURITY BITS INTERACTION
PROGRAM
ROM
USER ROM Programming
(Enable/Disable)
TEST ROM Programming
(Enable/Disable)
Verify
(Enable/Disable)
USER ROM
(i.e. 128k x 8 bits)
=
Yes
No
Yes
TEST ROM
RESERVED
(1k x 8 bits)
=
No
Yes
Yes
CHARACTER
ROM
USER ROM Programming
(Enable/Disable)
TEST ROM Programming
(Enable/Disable)
Verify
(Enable/Disable)
USER ROM
(9k x 12 bits)
=
Yes
No
Yes
TEST ROM
RESERVED
(0.5k x 12 bits)
=
No
Yes
Yes
PACKET 26
ROM
USER ROM Programming
(Enable/Disable)
TEST ROM Programming
(Enable/Disable)
Verify
(Enable/Disable)
USER ROM
(4k x 8 bits)
=
Yes
No
Yes
MEMORY
SECURITY BITS SET
USER ROM Programming
(Enable/Disable)
TEST ROM Programming
(Enable/Disable)
Verify
(Enable/Disable)
PROGRAM ROM
=
DISABLED
DISABLED
ENABLED
CHARACTER ROM
=
DISABLED
DISABLED
ENABLED
PACKET 26 ROM
=
DISABLED
DISABLED
ENABLED
Table 31 Security bits for production devices
MEMORY
SECURITY BITS SET
USER ROM Programming
(Enable/Disable)
TEST ROM Programming
(Enable/Disable)
Verify
(Enable/Disable)
PROGRAM ROM
=
ENABLED
DISABLED
ENABLED
CHARACTER ROM
=
ENABLED
DISABLED
ENABLED
PACKET 26 ROM
=
ENABLED
DISABLED
ENABLED
Table 32 Security bits for Blank devices



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