Memory Assignment; Fig. 2.3.1 Memory Assignment Of M37221M4-Xxxsp And M37221M6-Xxxsp/Fp - Renesas 7200 Series User Manual

2.3 Memory assignment

Figures 2.3.1 and 2.3.2 show the memory assignment. The ROM, RAM and I/O assigned in this memory
area are described below.
M37220M3-XXXSP/FP
Refer to "CHAPTER 4. M37220M3-XXXSP/FP."
RAM RAM
(384 bytes) (320 bytes)
for for
M37221M6 M37221M4
CRT display RAM
(96 bytes)
(See note)
ROM ROM
(24 K bytes) (16 K bytes)
for for
M37221M6 M37221M4

Fig. 2.3.1 Memory assignment of M37221M4-XXXSP and M37221M6-XXXSP/FP

FUNCTIONAL DESCRIPTION
Hexadecimal notation Decimal notation
0000
16
Internal RAM
SFR area
00C0
16
Special function register
(Refer to Figures 2. 3. 3 and 2. 3. 4)
00FF
16
0100
16
Internal RAM
017F
16
01BF
16
Not used
0600
16
RAM
for display
06B7
16
Not used
A000
16
C000
16
Internal ROM
FF00
16
Interrupt vector area
FFFF
16
7220 Group User's Manual
0
CRT display ROM
(8 K bytes)
Zero page
192
255
383
447
1536
1719
40960
49152
65280
65502
Special page
65535
Note: Refer to Table 2.11.4 Contents of CRT display RAM.
2.3 Memory assignment
10000
16
ROM
for display
11FFF
16
Not used
1FFFF
16
65536
73727
131071
2-11