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XC1701LPD8C 반도체 회로 부품 판매점

Configuration PROMs



Xilinx 로고
Xilinx
XC1701LPD8C 데이터시트, 핀배열, 회로
0
R XC1700E and XC1700L Series
Configuration PROMs
DS027 (v3.1) July 5, 2000
08
Features
• One-time programmable (OTP) read-only memory
designed to store configuration bitstreams of Xilinx
FPGA devices
• Simple interface to the FPGA; requires only one user
I/O pin
• Cascadable for storing longer or multiple bitstreams
• Programmable reset polarity (active High or active
Low) for compatibility with different FPGA solutions
• XC17128E/EL, XC17256E/EL, XC1701 and XC1700L
series support fast configuration
• Low-power CMOS Floating Gate process
• XC1700E series are available in 5V and 3.3V versions
• XC1700L series are available in 3.3V only
• Available in compact plastic packages: 8-pin SOIC,
8-pin VOIC, 8-pin PDIP, 20-pin SOIC, 20-pin PLCC,
44-pin PLCC or 44-pin VQFP.
• Programming support by leading programmer
manufacturers.
• Design support using the Xilinx Alliance and
Foundation series software packages.
• Guaranteed 20 year life data retention
Product Specification
Description
The XC1700 family of configuration PROMs provides an
easy-to-use, cost-effective method for storing large Xilinx
FPGA configuration bitstreams.
When the FPGA is in Master Serial mode, it generates a
configuration clock that drives the PROM. A short access
time after the rising clock edge, data appears on the PROM
DATA output pin that is connected to the FPGA DIN pin. The
FPGA generates the appropriate number of clock pulses to
complete the configuration. Once configured, it disables the
PROM. When the FPGA is in Slave Serial mode, the PROM
and the FPGA must both be clocked by an incoming signal.
Multiple devices can be concatenated by using the CEO
output to drive the CE input of the following device. The
clock inputs and the DATA outputs of all PROMs in this
chain are interconnected. All devices are compatible and
can be cascaded with other members of the family.
For device programming, either the Xilinx Alliance or Foun-
dation series development system compiles the FPGA
design file into a standard Hex format, which is then trans-
ferred to most commercial PROM programmers.
VCC VPP GND
RESET/
OE
or
OE/
RESET
CE
CLK
Address Counter
TC
CEO
EPROM
Cell
Matrix
Output
OE
DATA
DS027_01_021500
Figure 1: Simplified Block Diagram (does not show programming circuit)
© 2000 Xilinx, Inc. All rights reserved. All Xilinx trademarks, registered trademarks, patents, and disclaimers are as listed at http://www.xilinx.com/legal.htm.
All other trademarks and registered trademarks are the property of their respective owners. All specifications are subject to change without notice.
DS027 (v3.1) July 5, 2000
Product Specification
www.xilinx.com
1-800-255-7778
1


XC1701LPD8C 데이터시트, 핀배열, 회로
XC1700E and XC1700L Series Configuration PROMs
Pin Description
DATA
Data output is in a high-impedance state when either CE or
OE are inactive. During programming, the DATA pin is I/O.
Note that OE can be programmed to be either active High or
active Low.
CLK
Each rising edge on the CLK input increments the internal
address counter, if both CE and OE are active.
RESET/OE
When High, this input holds the address counter reset and
puts the DATA output in a high-impedance state. The polar-
ity of this input pin is programmable as either RESET/OE or
OE/RESET. To avoid confusion, this document describes
the pin as RESET/OE, although the opposite polarity is pos-
sible on all devices. When RESET is active, the address
counter is held at "0", and puts the DATA output in a
high-impedance state. The polarity of this input is program-
mable. The default is active High RESET, but the preferred
option is active Low RESET, because it can be driven by the
FPGAs INIT pin.
The polarity of this pin is controlled in the programmer inter-
face. This input pin is easily inverted using the Xilinx
HW-130 Programmer. Third-party programmers have differ-
ent methods to invert this pin.
CE
When High, this pin disables the internal address counter,
puts the DATA output in a high-impedance state, and forces
the device into low-ICC standby mode.
CEO
Chip Enable output, to be connected to the CE input of the
next PROM in the daisy chain. This output is Low when the
CE and OE inputs are both active AND the internal address
counter has been incremented beyond its Terminal Count
(TC) value. In other words: when the PROM has been read,
CEO will follow CE as long as OE is active. When OE goes
inactive, CEO stays High until the PROM is reset. Note that
OE can be programmed to be either active High or active
Low.
R
VPP
Programming voltage. No overshoot above the specified
max voltage is permitted on this pin. For normal read oper-
ation, this pin must be connected to VCC. Failure to do so
may lead to unpredictable, temperature-dependent opera-
tion and severe problems in circuit debugging. Do not leave
VPP floating!
VCC and GND
Positive supply and ground pins.
PROM Pinouts
Pin Name
8-pin
PDIP
SOIC
VOIC
20-pin
SOIC
20-pin
PLCC
44-pin
VQFP
44-pin
PLCC
DATA
1 1 2 40 2
CLK 2 3 4 43 5
RESET/OE 3
8
6
13 19
(OE/RESET)
CE
4 10
8
15 21
GND
5 11 10 18, 41 24, 3
CEO
6 13 14 21 27
VPP 7 18 17 35 41
VCC 8 20 20 38 44
Capacity
Devices
XC1704L
XC1702L
XC1701/L
XC17512L
XC1736E
XC1765E/EL
XC17128E/EL
XC17256E/EL
Configuration Bits
4,194,304
2,097,152
1,048,576
524,288
36,288
65,536
131,072
262,144
2
www.xilinx.com
DS027 (v3.1) July 5, 2000
1-800-255-7778
Product Specification




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