EPC1064V Datasheet, PDF (22/36 Pages) List of Unclassifed Manufacturers – Configuration Devices for SRAM-Based LUT Devices

Configuration Devices for SRAM-based LUT Devices Data Sheet
Table 7 describes the pin functions of all configuration devices during
FLEX 8000 device configuration.
Table 7. Configuration Device Pin Functions During FLEX 8000 Device Configuration
Pin Name
Pin Number
Pin
Type
8-Pin 20-Pin 32-Pin
PDIP (1) PLCC TQFP (2)
Description
DATA
1
2
31
Output Serial data output. The DATA pin is tri-stated before
configuration when the nCS pin is high and after the
configuration device finishes sending its configuration
data. This operation is independent of the device’s
position in the cascade chain.
DCLK
2
4
2
Input DCLK is a clock input when using EPC1, EPC1213,
EPC1064, and EPC1064V configuration devices. Rising
edges on DCLK increment the internal address counter
and present the next bit of data to the DATA pin. The
counter is incremented only if the OE input is held high,
the nCS input is held low, and all configuration data has
not been transferred to the target device.
OE
3
8
7
Open- Output enable (active high) and reset (active low). A low
Drain logic level resets the address counter. A high logic level
I/O
enables DATA and permits the address counter to count.
nCS (3) 4
9
10
Input Chip-select input (active low). A low input allows DCLK to
increment the address counter and enables DATA.
nCASC
6
12
15
Output Cascade-select output (active low). This output goes low
when the address counter has reached its maximum
value. The nCASC output is usually connected to the nCS
input of the next device in a configuration chain, so the
next DCLK clocks data out of the next device.
VCC
7, 8
20
27
Power Power pin.
GND
5
10
12
Ground Ground pin. A 0.2-µF decoupling capacitor must be
placed between the VCC and GND pins.
Notes: to Table 7
(1) This package is available for EPC1, EPC1441, EPC1213, EPC1064, and EPC1064V devices only.
(2) This package is available for EPC1441, EPC1064, and EPC1064V devices only.
(3) The EPC1441, EPC1064, and EPC1064V devices do not support data cascading. The EPC1 and EPC1213 devices
support data cascading for FLEX 8000 devices.
f For more information on FLEX 8000 device configuration, see the
following documents:
■ Application Note 33 (Configuring FLEX 8000 Devices)
■ Application Note 38 (Configuring Multiple FLEX 8000 Devices)
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Altera Corporation