UPD17062 datasheet(20/298 Pages) RENESAS

номер детали	UPD17062

подробное описание детали	MOS INTEGRATED CIRCUIT

PDF	298 Pages

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производитель	RENESAS [Renesas Technology Corp]

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µPD17062

2. PROGRAM MEMORY (ROM)

Program memory stores the program to be executed by the CPU, as well as predetermined constant data.

2.1

CONFIGURATION OF PROGRAM MEMORY

Fig. 2-1 shows the configuration of program memory.

As shown in Fig. 2-1, the capacity of the program memory is 8K bytes (3968

× 16 bits).

Locations in program memory are addressed in units of 16 bits. The total address range is from 0000H

to 0F7FH. Memory is divided into pages. The range of page 0 is from 0000H to 07FFH, while that of page

1 is from 0800H to 0F7FH.

The range from 0800H to 0F7FH can be used as the CROM (character ROM) area in which the display patterns

for the IDC are stored. If this area is not used as CROM, it can be used as a program area.

The range from 0000H to 00FFH is a table reference area. The area is used by the JMP @AR, CALL @AR,

MOVT, PUSH, and POP instructions.

Fig. 2-1

Configuration of Program Memory

Address

Program memory (ROM)

16 bits

Page 0

Page 1 (area that can be used as CROM)

3968 steps

0000H

07FFH

0800H

0F7FH

b15

b14

b13

b12

b11

b10

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