參數(shù)資料
型號(hào): SAB82525N
廠商: INFINEON TECHNOLOGIES AG
英文描述: Data Communications ICs
中文描述: 數(shù)據(jù)通信集成電路
文件頁數(shù): 18/126頁
文件大?。?/td> 730K
代理商: SAB82525N
Semiconductor Group
18
82525
82526
82525
82526
SAB
SAB
SAF
SAF
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 (
V
SS
). Since data transfer is controlled by
interrupt, the DMA acknowledge inputs (DACKA, DACKB) are connected to
V
DD
(+ 5 V).
INT0
RD
WR
ALE
A8 - A15
AD0 - AD7
INT
RD
WR
ALE
CS
A0 - A6
D0 - D7
DACKA
DACKB
Channel B
Channel A
AD0 - AD7
ALE
WR
RD
Latch
A
Memory
Common Bus
ITS00948
CPU
SAB 8051
SAB 82525
HSCX
A0 - A15,D0 - D7
IM1
+5 V
V
+5
相關(guān)PDF資料
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相關(guān)代理商/技術(shù)參數(shù)
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