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ST16C650ACQ48 Scheda tecnica(PDF) 8 Page - Exar Corporation

Il numero della parte ST16C650ACQ48
Spiegazioni elettronici  2.90V TO 5.5V UART WITH 32-BYTE FIFO
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Produttore elettronici  EXAR [Exar Corporation]
Homepage  http://www.exar.com
Logo EXAR - Exar Corporation

ST16C650ACQ48 Scheda tecnica(HTML) 8 Page - Exar Corporation

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ST16C650A
8
2.90V TO 5.5V UART WITH 32-BYTE FIFO
REV. 5.0.2
2.0 FUNCTIONAL DESCRIPTIONS
2.1
Host Data Bus Interface
The host interface is 8 data bits wide with 3 address lines and control signals to execute bus read and write
transactions. The 650A supports 2 type of host interfaces: Intel and PC mode. The Intel bus interface is
selected by connecting SEL to a logic 1. The Intel bus interconnections are shown in Figure 3. The special PC
mode is selected when SEL is connected to a logic 0. The PC mode interconnections are shown in Figure 4.
FIGURE 3. ST16C650A INTEL BUS INTERCONNECTIONS
FIGURE 4. ST16C650A PC MODE INTERCONNECTIONS
D0
D1
D2
D3
D4
D5
D6
D7
A0
A1
A2
IOR*
IOW*
RESET
D0
D1
D2
D3
D4
D5
D6
D7
IOR#
IOW#
A0
A1
A2
CS2#
RESET
VCC
CS0
CS1
AS#
IOR
IOW
INT
INT
RCLK
BAUDOUT#
SEL
VCC
GND
CS#
OP2#
OP1#
DSR#
CTS#
RTS#
DTR#
RX
TX
RI#
CD#
D0
D1
D2
D3
D4
D5
D6
D7
A0
A1
A2
A3
A4
A5
A6
A7
A14
A15
AEN#
IOW#
IOR#
RESET
D0
D1
D2
D3
D4
D5
D6
D7
IOW#
A0
A1
A2
RESET
VCC
CS0
CS1
AS#
IOR
IOW
IRQn
IRQA
SEL
VCC
GND
IOR#
IRQB
IRQC
IRQ4
IRQ3
A3
A4
A5
A6
A7
A8
A9
AEN*
OP1#
RI#
CD#
DSR#
CTS#
RX
TX
RTS#
DTR#
S1
S2
S3
VCC
GND
GND


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