TDA9550 PHILIPS [NXP Semiconductors], TDA9550 Datasheet - Page 60
TDA9550
Manufacturer Part Number
TDA9550
Description
TV signal processor-Teletext decoder with embedded m-Controller
Manufacturer
PHILIPS [NXP Semiconductors]
Datasheet
1.TDA9550.pdf
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Philips Semiconductors
OTP MEMORY
These may be programmed either using the Parallel
Programming Interface or via the ISP Programming
Interface.
Parallel Programming
The following pins form the parallel programming
interface:-
Table 29 Parallel Programming Interface
ISecurity Bits
The family of devices have a set of security bits for the
combined OTP 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
2000 Jun 22
XTALIN
TV signal processor-Teletext decoder with
embedded -Controller
RESET
VPE
P0.5
P0.6
P1.0
P1.1
P1.2
P1.3
P3.1
P3.2
P2.0
P3.0
P1.6
P1.7
P3.3
Pin
MODE
RESET
Name
A/DB
IO(0)
IO(1)
IO(2)
IO(3)
IO(4)
IO(5)
IO(6)
IO(7)
WEB
OEB
CLK
VPE
Bit 0:- Address/Data/Mode
Bit 1:- Address/Data/Mode
Bit 2:- Address/Data/Mode
Bit 3:- Address/Data/Mode
Bit 4:- Address/Data/Mode
Bit 5:- Address/Data/Mode
Bit 6:- Address/Data/Mode
Bit 7:- Address/Data/Mode
Output Enable
0 = IO is output
1 = IO is input
Write Enable, programming pulse
>100us
0 = Program
0 = IO(7:0) defined by A/DB
1 = IO(7:0) contains mode information
0 = IO(7:0) contains Data
1
Information
Unused
9V Programming Voltage
Device reset/ mode selection
Clock 4 MHz
=
IO(7:0)
Function
contains
Address
60
security bits are one-time programmable and CANNOT be
erased.
TDA955X/6X/8X PS/N1 series
Tentative Device Specification
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