P80C592 Philips Semiconductors, P80C592 Datasheet - Page 12

• Manufacturer Part Number: P80C592
• Description: 8-bit microcontroller with on-chip CAN
• Manufacturer: Philips Semiconductors

Philips Semiconductors
7.2.1
Four 8-bit register banks occupy the lower RAM area,
Only one of these banks may be enabled at the same time.
The next 16 bytes, locations 32 through 45, contains
128 directly addressable bit locations.
The stack can be located anywhere in the internal MAIN
RAM address space. The stack depth is only limited by the
internal RAM space available. All registers except the
program counter and the four 8-bit register banks reside in
the SFR address space.
7.3
An access to external Data Memory locations higher than
255 will be performed with the MOVX @DPTR instructions
in the same way as in the 80C51 structure,
i.e. with P0 and P2 as data/address bus and P3.6 and P3.7
as Write and Read strobe signals.
Note that these external Data Memory locations cannot be
accessed with R0 or R1 as address pointer.
1996 Jun 27
BANK 0: location 0 to 7
BANK 1: location 8 to 15
BANK 2: location 16 to 23
BANK 4: location 24 to 31.
8-bit microcontroller with on-chip CAN
External Data Memory
MAIN RAM
12
Fig.5 Internal MAIN RAM bit addresses.
2DH
2CH
2EH
2BH
2AH
7FH
2FH
1FH
0FH
29H
28H
27H
26H
25H
24H
23H
22H
21H
20H
18H
17H
10H
08H
07H
00H
7F
6F
5F
4F
3F
2F
1F
0F
77
67
57
47
37
27
17
07
(MSB)
7E
6E
5E
4E
3E
2E
1E
0E
76
66
56
46
36
26
16
06
7D
6D
5D
4D
3D
2D
1D
0D
75
65
55
45
35
25
15
05
7C
6C
5C
4C
3C
2C
1C
0C
74
64
54
44
34
24
14
04
BANK 3
BANK 2
BANK 1
BANK 0
7B
73
6B
63
5B
53
4B
43
3B
33
2B
23
1B
13
0B
03
7A
6A
5A
4A
3A
2A
1A
0A
72
62
52
42
32
22
12
02
Product specification
79
71
69
61
59
51
49
41
39
31
29
21
19
11
09
01
MGA152
(LSB)
P8xC592
78
70
68
60
58
50
48
40
38
30
28
20
18
10
08
00
127
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
24
23
16
15
8
7
0