R
Spartan Family of One-Time Programmable Configuration PROMs (XC17S00)
Standby Mode
The PROM enters a low-power standby mode whenever CE
is asserted High. The output remains in a high-impedance
state regardless of the state of the OE input.
Programming the Spartan Family
PROMs
The devices can be programmed on programmers supplied
by Xilinx or qualified third-party vendors. The user must
ensure that the appropriate programming algorithm and the
latest version of the programmer software are used. The
wrong choice can permanently damage the device.
V
CC
GND
RESET/
CE
OE
or
OE/
RESET
Address Counter
CLK
TC
EPROM
Cell
OE
Output
DATA
Matrix
DS030_02_011300
Figure 2: Simplified Block Diagram (does not show programming circuit)
Important: Always tie the two VCC pins together in your application.
Table 2: Truth Table for XC17S00 Control Inputs
Control Inputs
Outputs
RESET(1)
CE
Internal Address(2)
DATA
ICC
Inactive
Low
If address < TC: increment
Active
Active
If address > TC: don’t change
High-Z
Reduced
Active
Inactive
Active
Low
High
High
Held reset
Not changing
Held reset
High-Z
High-Z
High-Z
Active
Standby
Standby
Notes:
1. The XC17S00 RESET input has programmable polarity
2. TC = Terminal Count = highest address value. TC + 1 = address 0.
4
www.xilinx.com
1-800-255-7778
DS030 (v1.8) October 10, 2001
Product Specification
XILINX [ XILINX, INC ]
