
2000 Feb 23
12
Philips Semiconductors
Preliminary specification
Enhanced TV microcontrollers with
On-Screen Display (OSD)
SAA55xx
Fig.6 Security bits for production devices.
handbook, full pagewidth
MBK954
PROGRAM ROM
MEMORY
USER ROM PROGRAMMING
(ENABLE/DISABLE)
VERIFY
(ENABLE/DISABLE)
DISABLED
ENABLED
DISABLED
ENABLED
DISABLED
ENABLED
SECURITY BITS SET
CHARACTER ROM
PACKET 26 ROM
Fig.7 Security bits for production blank devices.
handbook, full pagewidth
MBK955
PROGRAM ROM
MEMORY
USER ROM PROGRAMMING
(ENABLE/DISABLE)
VERIFY
(ENABLE/DISABLE)
ENABLED
ENABLED
ENABLED
ENABLED
ENABLED
ENABLED
SECURITY BITS SET
CHARACTER ROM
PACKET 26 ROM