HD404449 Datasheet, PDF (121/123 Pages) Hitachi Semiconductor – HD404449 SERIES

HD404449 Series
Notes on ROM Out
Please pay attention to the following items regarding ROM out.
On ROM out, fill the ROM area indicated below with 1s to create the same data size as a 16-kword version
(HD404449). A 16-kword data size is required to change ROM data to mask manufacturing data since the
program used is for a16-kword version.
This limitation applies when using an EPROM or a data base.
ROM 8-kword version:
HD404448
Address $2000–$3FFF
$0000
$000F
$0010
$003F
$0040
$1FFF
$2000
$3FFF
Vector address
Zero-page subroutine
(64 words)
Pattern & program
(8,192 words)
Not used
Fill this area with 1s
121