HCD404344R View Datasheet(PDF) -

HD404344R Series/HD404394 Series

Memory registers

$040 MR(0)

$041

$042

$043

$044

$045

$046

$047

$048

$049

$04A

$04B

$04C

$04D

$04E

$04F

MR(1)

MR(2)

MR(3)

MR(4)

MR(5)

MR(6)

MR(7)

MR(8)

MR(9)

MR(10)

MR(11)

MR(12)

MR(13)

MR(14)

MR(15)

$3C0

$3FF

Stack area

Level 16

Level 15

Level 14

Level 13

Level 12

Level 11

Level 10

Level 9

Level 8

Level 7

Level 6

Level 5

Level 4

Level 3

Level 2

Level 1

Bit 3

$3FC ST

$3FD

$3FE

PC10

CA

$3FF PC3

Bit 2

PC13

PC9

PC6

PC2

Bit 1

PC12

PC8

PC5

PC1

Bit 0

PC11

PC7

PC4

PC0

PC13–PC0 : Program counter

ST: Status flag

CA: Carry flag

Note: Since HD404344R series, HD4074344 and HD404394 series have a 4-kword ROM, PC12 and

PC13 are ignored.

Figure 6 Configuration of Memory Registers, Stack Area, and Stack Position

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