HD404344R Datasheet, PDF (99/102 Pages) Renesas Technology Corp – 4-bit microcomputer has an A/D converter

HD404344R Series/HD404394 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 4-kword versions
(HD404344R and HD404394). A 4-kword data size is required to change ROM data to mask
manufacturing data since the program used is for a 4-kword version.
This limitation apply to the case of using EPROM and the case of using data base.
ROM 1 kwords version:
HD404341R, HD40C4341R,
HD404391
Address $0400 to $0FFF
$0000
$000F
$0010
$003F
$0040
$03FF
$0400
Vector address
Zero page subroutine
(64 words)
Pattern and program
(1,024 words)
Not used
$0FFF
Fill this area with all 1s
ROM 2 kwords version:
HD404342R, HD40C4342R,
HD404392
Address $0800 to $0FFF
$0000
$000F
$0010
$003F
$0040
$07FF
$0800
Vector address
Zero page subroutine
(64 words)
Pattern and program
(2,048 words)
Not used
$0FFF
97