M37221M4H/M6H/M8H/MAH–XXXSP/FP M37221EASP/FP
8.2 MEMORY
8.2.1 Special Function Register (SFR) Area
8.2.6 Interrupt Vector Area
The interrupt vector area contains reset and interrupt vectors.
The special function register (SFR) area in the zero page includes
control registers such as I/O ports and timers.
8.2.7 Zero Page
The zero page addressing mode can be used to specify memory and
register addresses in the zero page area. Access to this area is pos-
sible with only 2 bytes in the zero page addressing mode.
8.2.2 RAM
RAM is used for data storage and for stack area of subroutine calls
and interrupts.
8.2.3 ROM
8.2.8 Special Page
ROM is used for storing user programs as well as the interrupt vector
The special page addressing mode can be used to specify memory
addresses in the special page area. Access to this area is possible
with only 2 bytes in the special page addressing mode.
area.
8.2.4 OSD RAM
RAM used for specifying the character codes and colors for display.
8.2.9 ROM Correction Memory (RAM)
This is used as the program area for ROM correction.
8.2.5 OSD ROM
ROM used for storing character data for display.
■ M37221M4H/M6H-XXXSP/FP
000016
1000016
OSD ROM
(8K bytes)
Zero page
M37221M4H-
XXXSP/FP
RAM
(384 bytes)
00C016
M37221M6H-
XXXSP/FP
RAM
SFR area
11FFF16
00FF16
017F16
(448 bytes)
1BF16
0
Not used
Not used
02C016
02E016
02FF16
ROM correction function
Vector 1: address 02C016
Vector 2: address 02E016
060016
06B716
OSD RAM
(96 bytes)
(See note)
Not used
Not used
A00016
C00016
M37221M6H-
XXXSP/FP
ROM
(24K bytes)
M37221M4H-
XXXSP/FP
ROM
(16K bytes)
FF0016
FFDE16
Special page
1FFFF16
Interrupt vector area
FFFF16
Note: Refer to Table 8.11.4 OSD RAM.
Fig. 8.2.1 Memory Map (M37221M4H/M6H-XXXSP/FP)
Rev.1.00 Oct 01, 2002 page 13 of 110
REJ03B0134-0100Z
RENESAS [ RENESAS TECHNOLOGY CORP ]
