Memory Map - Citizen CLP-621 Technical Manual

2-2. Operation of Control Parts

(2) Memory map

0000000
H
001FFFF
H
0100000
H
0103FFF
H
0104000
H
0105FFF
H
0106000
H
0107FFF
H
0108000
H
010FFFF
H
0110000
H
025FFFF
H
0260000
H
026FFFF
H
0270000
H
027FFFF
H
0280000
H
02FFFFF
H
4000000
H
40FFFFF
H
0800000
H
0FFFFFF
H
FFFB000
H
FFFEFFF
H
FFFF000
H
FFFFFFF
H
CLP-621 & CLP-631
Command RAM
(Built-in CPU)
Boot Loader (1)
Setting Information
(User Settings)
Setting Information
(Factory-set Settings)
Boot Loader (2)
Firmware
Service Information
(Backup)
Service Information
Downloading Area (512K bytes)
I/O
Firmware (about 400K bytes)
Receiving Buffer (16K bytes x 3)*
Command Buffer (128K bytes)
Others
Data RAM (Built-in CPU)
I/O (Built-in CPU)
CPU
Flash ROM
2M bytes
Custom IC
SDRAM
8M bytes
*: 16K bytes for each I/F
(USB, IEEE1284 and Serial)
CPU
2-20