SAF82526 INFINEON [Infineon Technologies AG], SAF82526 Datasheet - Page 18
SAF82526
Manufacturer Part Number
SAF82526
Description
Data Communications ICs
Manufacturer
INFINEON [Infineon Technologies AG]
Datasheet
1.SAF82526.pdf
(126 pages)
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Specific Applications
HSCX with SAB 8051 Microcontroller
For cost-sensitive applications, the HSCX can be interfaced with a small SAB 8051
microcontroller system (without DMA support) very easily as shown in figure 3.
Figure 3
HSCX with 8051 CPU
Although the HSCX provides a demultiplexed bus interface, it can optionally be connected
directly to the local multiplexed bus of SAB 8051 because of the internal address latch function
(via ALE, compatibility to SAB 82520 HSCC).
The address lines A0 … A6 must be wired externally to the data lines D0 … D6 (direct
connection) in this case.
Intel bus mode is selected connecting IM1 pin to low (
interrupt, the DMA acknowledge inputs (DACKA, DACKB) are connected to
Semiconductor Group
SAB 8051
CPU
AD0 - AD7
A8 - A15
INT0
ALE
WR
RD
Common Bus
AD0 - AD7
Memory
Latch
ALE
RD
WR
A0 - A15,D0 - D7
18
+5
V
V
SS
INT
RD
WR
ALE
CS
A0 - A6
D0 - D7
). Since data transfer is controlled by
DACKA
SAB 82525
HSCX
+5 V
IM1
DACKB
V
DD
SAB
SAB
SAF
SAF
Channel A
Channel B
(+ 5 V).
ITS00948
82525
82526
82525
82526
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