Electronic Signature Word
There are 64 bits of programmable memory that are always
available to the user, even if the device is secured. These
bits can be used for user-specific data.
Input and I/O Pull-ups
All ATF22V10B family members have internal input and I/O
pull-up resistors. Therefore, whenever inputs or I/Os are
not being driven externally, they will float to V
CC
. This
ensures that all logic array inputs are at known states.
These are relatively weak active pull-ups that can easily be
overdriven by TTL-compatible drivers (see input and I/O
diagrams below).
Programming/Erasing
Pro gr ammin g/e ra sing is p erfo rme d usin g s tan da rd
P L D p r o g ra m m e r s . S e e
C MO S P L D Pr o g ra mm in g
Ha rdw are a nd Softwa re Su pp ort
for in fo rmation on
software/programming.
Input Diagram
I/O Diagram
6
ATF22V10B
ATMEL [ ATMEL CORPORATION ]
