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TUSB5052PZ датащи(PDF) 17 Page - Texas Instruments

номер детали TUSB5052PZ
подробное описание детали  USB TO 2-SERIAL PORT CONTROLLER WITH CONFIGURABLE OPTIONAL HUB
PDF  82 Pages
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производитель  TI [Texas Instruments]
домашняя страница  http://www.ti.com
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TUSB5052PZ датащи(HTML) 17 Page - Texas Instruments

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3−5
3.2
Connecting an External Microcontroller for Development
Figure 3−3 illustrates how to connect an external 8052 microcontroller to the TUSB5052. Pin TEST0 must be
connected to ground to enable the external mode (TEST[2:0] = 110b). Table 3−4 outlines the signals used to connect
the TUSB5052 to the external microcontroller.
Table 3−4. Signals Used for External Microcontroller
TUSB5052
EXTERNAL 8052 MICROCONTROLLER
TUSB5052
NAME
NAME
COMMENTS
P1.0
P0.0
Port-0: Bit-0 data bus
P1.1
P0.1
Port-0: Bit-1 data bus
P1.2
P0.2
Port-0: Bit-2 data bus
P1.3
P0.3
Port-0: Bit-3 data bus
P1.4
P0.4
Port-0: Bit-4 data bus
P1.5
P0.5
Port-0: Bit-5 data bus
P1.6
P0.6
Port-0: Bit-6 data bus
P1.7
P0.7
Port-0: Bit-7 data bus
P3.0
P2.0
Address line A8
P3.1
P2.1
Address line A9
P3.3
P2.2
Address line A10
P3.4
P2.7
Address line A15
LED-1
ALE
Address latch enable
LED-2
INTO
Interrupt input to microcontroller
LED-3
WR
External data memory write strobe
LED-4
RD
External data memory read strobe
RSTO
RST
Master reset input
TUSB5052
8052
LED-1
LED-3
LED-4
LED-2
RSTO
TEST0
P1.[7:0]
P3.[4,3,1,0]
Address Lines A8, A9, A10, A15
ALE
WR
P0.[7:0]
RD
P2.[7,2,1,0]
INT0
RST
P1[7:0]
P3[4:0]
Figure 3−3. Connecting to an External Microcontroller



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