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參數(shù)資料
| 型號： | EPC1441TC32N |
| 廠商： | Altera |
| 文件頁數(shù)： | 24/26頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC CONFIG DEVICE 440KBIT 32-TQFP |
| 產(chǎn)品培訓(xùn)模塊： | Three Reasons to Use FPGA's in Industrial Designs |
| 標(biāo)準(zhǔn)包裝： | 250 |
| 系列： | EPC |
| 可編程類型： | OTP |
| 存儲容量： | 440kb |
| 電源電壓： | 3 V ~ 3.6 V，4.75 V ~ 5.25 V |
| 工作溫度： | 0°C ~ 70°C |
| 封裝/外殼： | 32-TQFP |
| 供應(yīng)商設(shè)備封裝： | 32-TQFP（7x7） |
| 包裝： | 托盤 |
| 其它名稱： | 544-1649 |
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Device Configuration
Page 7
Configuration Devices for SRAM-Based LUT Devices
January 2012
Altera Corporation
The EPC2 device’s OE and nCS pins have internal programmable pull-up resistors. If
you use internal pull-up resistors, do not use external pull-up resistors on these pins.
The internal pull-up resistors are set by default in the Quartus II software. To turn off
the internal pull-up resistors, check the Disable nCS and OE pull-ups on
configuration device
option when you generate programming files.
The configuration device’s OE and nCS pins control the tri-state buffer on its DATA
output pin and enable the address counter and oscillator. When the OE pin is driven
low, the configuration device resets the address counter and tri-states its DATA pin. The
nCS
pin controls the DATA output of the configuration device. If the nCS pin is held high
after the OE reset pulse, the counter is disabled and the DATA output pin is tri-stated. If
the nCS pin is driven low after the OE reset pulse, the counter and DATA output pin are
enabled. When OE is driven low again, the address counter is reset and the DATA
output pin is tri-stated, regardless of the state of the nCS pin.
If the FPGA’s configuration data exceeds the capacity of a single EPC1 or EPC2
configuration device, you can cascade multiple EPC1 or EPC2 devices together. If
multiple EPC1 or EPC2 devices are required, the nCASC and nCS pins provide
handshaking between the configuration devices.
1 EPC1441 and EPC1064/EPC1064V devices cannot be cascaded.
When configuring ACEX 1K, APEX 20K, APEX II, Arria GX, Cyclone, Cyclone II,
FLEX 10K, Mercury, Stratix, Stratix GX, Stratix II, and Stratix II GX devices with
cascaded EPC1 or EPC2 devices, the position of the EPC1 or EPC2 device in the chain
determines its mode of operation. The first configuration device in the chain is the
master, while subsequent configuration devices are slaves. The nINIT_CONF pin of the
EPC2 master device can be connected to the nCONFIG pin of the FPGAs, which allows
the INIT_CONF JTAG instruction to begin FPGA configuration. The nCS pin of the
master configuration device is connected to the CONF_DONE pin of the FPGAs, while its
nCASC
pin is connected to the nCS pin of the next slave configuration device in the
chain. Additional EPC1 or EPC2 devices can be chained together by connecting the
nCASC
pin to the nCS pin of the next EPC1 or EPC2 slave device in the chain. The last
device’s nCS input comes from the previous device, while its nCASC pin is left floating.
All other configuration pins, DCLK, DATA, and OE, are connected to every device in the
chain.
f For more information about configuration interface connections, including pull-up
resistor values, supply voltages, and MSEL pin setting, refer to the configuration
chapter in the appropriate device handbook.
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