Application With The 80 C 32 - Siemens SPC3 Hardware Description

7.1.4 Application with the 80 C 32

48 MHz
M
1K
Px.x
uC
P5
3k3
P5
3k3
ALE
uC
XWR
uC
XRD
uC
P5
3k3
P5
3k3
5V or
GND
AB8
AB9
AB10
AB11
AB12
AB13
AB14
AB15
ADB(8:15)
uC
M
1K
M
1K
The pull up / pull down resistances in the drawing above are only relevant for a in circuit tester.The internal
chip select logic is activated when the address pins A 11 .. A 15 are set to „0" . In the example above the
starting address of the SPC3 is set to 0x1000 .
Processor
ALE
Addreß-
AD 0 ..7
latch
A8 .. 10
A 11..15 alle 0
SPC3 Hardware Description
Copyright (C) Siemens AG 2003 All rights reserved.
SPC3
5
CLK
8
XINT/MOT
36
RESET
1
XCS
23
MODE
24
ALE
2
XWR
4
XRD
34
XTEST0
35
XTEST1
3
DIVIDER
44
0
43
1
41
2
40
3
37
1 4
42
5
AB
32
6
31
7
29
8
25
9
S P C 3
AD 0 ..7
PROFIBUS Interface Center
SPC3
7
CLK2
13
XHOLDT.
14
XREADY
10
1K
AB 10
9
X/INT
33
XCTS
RXD 30
27
RTS
26
TXD
0 11
1 12
2 15
3 16
DB
4 19
5 20
6 21
7 22
1,5 kByte RAM
A 0..10
in the SPC 3
CS
V1.3
M
INT0/1
uC
1K
RXD
RS485
RTS
RS485
TXD
RS485
ADB0
ADB1
ADB2
ADB3
ADB4
ADB5
ADB6
ADB7
DB(0:7)
uC
Page 41
2003/04