HD404458 datasheet(8/122 Pages) RENESAS

8 / 122 page

HD404459 Series

Memory Map

ROM Memory Map

See the ROM memory map of figure 1.

Vector Address Area ($0000–$000F): Reserved for JMPL instructions that branch to the start addresses

of the reset and interrupt routines. After MCU reset or an interrupt, program execution continues from the

vector address.

Zero-Page Subroutine Area ($0000–$003F): Reserved for subroutines. The program branches to a

subroutine in this area in response to the CAL instruction.

Pattern Area ($0000–$0FFF): Contains ROM data that can be referenced with the P instruction.

Program Area ($0000–$1FFF for HD404458, $0000–$3FFF for HD404459/HD4074459): Used for

program coding.

Vector address

Zero-page subroutine

(64 words)

Pattern

(4,096 words)

HD404458 program

(8,192 words)

HD404459, HD4074459 program

(16,384 words)

$0000

$000F

$0010

$0FFF

$1000

$1FFF

$2000

$3FFF

$003F

$0040

$0000

$0001

$0002

$0003

$0004

$0005

$0006

$0007

$0008

$0009

$000A

$000B

$000C

$000D

$000E

$000F

JMPL instruction

(jump to RESET,

STOPC routine)

JMPL instruction

(jump to

INT routine)

JMPL instruction

(jump to timer D routine)

JMPL instruction

(jump to timer A, INT2 routine)

JMPL instruction

(jump to timer B, INT3 routine)

JMPL instruction

(jump to timer C, serial routine)

JMPL instruction

(jump to wakeup routine)

JMPL instruction

(jump to

INT routine)

Figure 1 ROM Memory Map

HD404458 Datasheet(PDF) 8 Page - Renesas Technology Corp

HD404458 Datasheet(HTML) 8 Page - Renesas Technology Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL