EPC1441LI20 Altera, EPC1441LI20 Datasheet - Page 14

• Manufacturer Part Number: EPC1441LI20
• Description: Configuration Devices
• Manufacturer: Altera

Configuration Devices for SRAM-based LUT Devices Data Sheet
Figure 5. APEX II, APEX 20K, Mercury, ACEX 1K, FLEX 10K, or FLEX 6000 Device Configured with Two EPC2
or EPC1 Configuration Devices
Notes to
(1)
(2)
(3)
(4)
(5)
(6)
14
GND
Do not use EPC2 devices to configure FLEX 6000 devices.
The pull-up resistor should be connected to the same supply voltage as the configuration device.
All pull-up resistors are 1 kΩ (APEX 20KE pull-resistors are 10 kΩ). The OE and nCS pins on EPC2 devices have
internal, user-configurable 1-kΩ pull-up resistors. If internal pull-up resistors are used, external pull-up resistors
should not be used on these pins.
The diagram shows an APEX II, APEX 20K, Mercury, ACEX 1K, and FLEX device, which has MSEL0 and MSEL1
tied to ground. For FLEX 6000 devices, MSEL is tied to ground, and the DATA0 pin is named DATA. EPC8, EPC16,
and EPC2 devices cannot be used with FLEX 6000 devices. All other connections are the same for FLEX 6000
devices. The Quartus II software uses the internal pull-up resistors by default. To turn off the internal pull-up
resistors, check the Disable nCS and OE pull-ups on configuration device option when generating programming files.
EPC4, EPC8, and EPC16 devices cannot be cascaded.
The nINIT_CONF pin is only available on EPC2 devices and has an internal pull up of 1 kΩ that is always active. If
nINIT_CONF is not available or not used, nCONFIG must be pulled to V
Figure
MSEL0
MSEL1
LUT-Based PLD (4)
5:
CONF_DONE
nSTATUS
nCONFIG
DATA0
DCLK
nCE
GND
Note (1)
V
CC
(2, 3)
V
CC
(2, 3)
DCLK
DATA
OE
nCS
nINIT_CONF (6)
Configuration
Device 1
CC
nCASC
either directly or through a 1-kΩ resistor.
(5)
Altera Corporation
DCLK
DATA
nCS
OE
Configuration
Device 2