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ATF750LVC_08 Datasheet(数据表) 4 Page - ATMEL Corporation

部件型号  ATF750LVC
说明  High-speed Complex Programmable Logic Device
下载  19 Pages
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制造商  ATMEL [ATMEL Corporation]
网页  http://www.atmel.com
标志 ATMEL - ATMEL Corporation

ATF750LVC Datasheet(HTML) 4 Page - ATMEL Corporation

  ATF750LVC_08 数据表 HTML 1Page - ATMEL Corporation ATF750LVC_08 数据表 HTML 2Page - ATMEL Corporation ATF750LVC_08 数据表 HTML 3Page - ATMEL Corporation ATF750LVC_08 数据表 HTML 4Page - ATMEL Corporation ATF750LVC_08 数据表 HTML 5Page - ATMEL Corporation ATF750LVC_08 数据表 HTML 6Page - ATMEL Corporation ATF750LVC_08 数据表 HTML 7Page - ATMEL Corporation ATF750LVC_08 数据表 HTML 8Page - ATMEL Corporation ATF750LVC_08 数据表 HTML 9Page - ATMEL Corporation Next Button
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4
1447F–PLD–11/08
ATF750LVC
8.
Bus-friendly Pin-keeper Input and I/Os
All input and I/O pins on the ATF750LVC have programmable “pin-keeper” circuits. If acti-
vated, when any pin is driven high or low and then subsequently left floating, it will stay at that
previous high or low level.
This circuitry prevents unused input and I/O lines from floating to intermediate voltage levels,
which cause unnecessary power consumption and system noise. The keeper circuits elimi-
nate the need for external pull-up resistors and eliminate their DC power consumption.
Enabling or disabling of the pin-keeper circuits is controlled by the device type chosen in the
logic compiler device selection menu. Please refer to the software compiler table for more
details. Once the pin-keeper circuits are disabled, normal termination procedures are required
for unused inputs and I/Os.
9.
Input Diagram
10. I/O Diagram
Table 1. Software Compiler Mode Selection
Synario
WinCupl
Pin-keeper Circuit
ATF750LVC
V750C
Disabled
ATF750LVC (PPK)
V750CPPK
Enabled
100K
V
CC
ESD
PROTECTION
CIRCUIT
INPUT
PROGRAMMABLE
OPTION
100K
V
CC
V
CC
DATA
OE
I/O
PROGRAMMABLE
OPTION




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