EPC1064V Datasheet, PDF (11/36 Pages) List of Unclassifed Manufacturers – Configuration Devices for SRAM-Based LUT Devices

Configuration Devices for SRAM-Based LUT Devices Data Sheet
Table 3. EPC2, EPC1, & EPC1441 Pin Functions During APEX II, APEX 20K, Mercury, ACEX 1K, FLEX 10K
& FLEX 6000 Configuration (Part 2 of 3) Notes (1), (2)
Pin Name
Pin Number
8-Pin 20-Pin 32-Pin
PDIP (3) PLCC TQFP (4)
Pin
Type
Description
nCASC (6) 6
nINIT_CONF –
(5), (7)
TDI (7)
–
TDO (7)
–
TMS (7)
–
TCK (7)
–
VCCSEL (7) –
VPPSEL (7) –
VPP (7)
–
12
15
Output Cascade select output (active low). This output goes
low when the address counter has reached its
maximum value. In a chain of EPC1 or EPC2 devices,
the nCASC pin of one device is connected to the nCS pin
of the next device, which permits DCLK to clock data
from the next EPC1 or EPC2 device in the chain.
13
16
Open- Allows the INIT_CONF JTAG instruction to initiate
Drain configuration. This pin is connected to the nCONFIG pin
Output of the LUT device to initiate configuration from the
EPC2 via a JTAG instruction. If multiple EPC2 devices
are used to configure an ACEX, APEX, FLEX or
Mercury device, only the first EPC2 has its
nINIT_CONF pin tied to the device’s nCONFIG pin.
11
13
Input JTAG data input pin. Connect this pin to V_CC if the
JTAG circuitry is not used.
1
28
Output JTAG data output pin. Do not connect this pin if the
JTAG circuitry is not used.
19
25
Input JTAG mode select pin. Connect this pin to V_CC if the
JTAG circuitry is not used.
3
32
Input JTAG clock pin. Connect this pin to ground if the JTAG
circuitry is not used.
5
3
Input Mode select for V_CC supply. VCCSEL must be
connected to ground if the device uses a 5.0-V power
supply (i.e., V_CC = 5.0 V). VCCSEL must be connected
to V_CC if the device uses a 3.3-V power supply (i.e.,
V_CC = 3.3 V).
14
17
Input Mode select for VPP. VPPSEL must be connected to
ground if VPP uses a 5.0-V power supply
(i.e., VPP = 5.0 V). VPPSEL must be connected to V_CC
if VPP uses a 3.3-V power supply (i.e, VPP = 3.3 V).
18
23
Power Programming power pin. For the EPC2 device, this pin
is normally tied to V_CC. If the EPC2 V_CC is 3.3 V, VPP
can be tied to 5.0 V to improve in-system programming
times. For EPC1 and EPC1441 devices, VPP must be
tied to V_CC.
Altera Corporation
11