7220 datasheet(36/303 Pages) RENESAS

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2-9

7220 Group User’s Manual

2.2 Access area

FUNCTIONAL DESCRIPTION

SFR area

Special function register

(Refer to Figures 2. 3. 3 to 2. 3. 5)

Internal RAM

ROM

for display

: Internal ROM area for

program counter

000016

00C016

00FF16

01FF16

ROM correction

memory (RAM)

FFFF16

FFDE16

FF0016

Interrupt vector area

Not used

1000016

11FFF16

1FFFF16

Special page

ROM

(32 K bytes)

for

M37221M8

Zero page

033F16

030016

02FF16

02C016

021716

Not used

2 page register

Not used

021B16

Note: Refer to Table 2.11.4 Contents of CRT display RAM.

Internal RAM

Internal ROM

Internal RAM

ROM correction memory

Block 1: addresses 02C0 16 to 02DF16

Block 2: addresses 02E016 to 02FF16

CRT display ROM

(8 K bytes)

06B716

600016

Not used

060016

Not used

RAM

for display

CRT display RAM

(96 bytes)

(See note)

03BF16

RAM

(512 bytes)

for

M37221M8

800016

ROM

(40 K bytes)

for

M37221MA

RAM

(640 bytes)

for

M37221MA

Fig. 2.2.2 Access area of M37221M8-XXXSP and M37221MA-XXXSP

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