XC17S00 Datasheet, PDF (4/9 Pages) Xilinx, Inc – Spartan Family of One-Time

Spartan Family of One-Time Programmable Configuration PROMs (XC17S00)
R
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.
VCC
GND
RESET/
OE
CE
or
OE/
RESET
CLK
Address Counter
TC
EPROM
Cell
Matrix
Output
OE
DATA
DS030_02_011300
Figure 2: Simplified Block Diagram (does not show programming circuit)
Important:ÁAlways tie the two V_CC pins together in your application.
Table 2: Truth Table for XC17S00 Control Inputs
Control Inputs
RESET⁽¹⁾
CE
Internal Address⁽²⁾
Inactive
Low
If address < TC: increment
If address > TC: don’t change
Active
Low
Held reset
Inactive
High
Not changing
Active
High
Held reset
Notes:
1. The XC17S00 RESET input has programmable polarity
2. TC = Terminal Count = highest address value. TC + 1 = address 0.
Outputs
DATA
Active
High-Z
I_CC
Active
Reduced
High-Z
Active
High-Z
Standby
High-Z
Standby
4
www.xilinx.com
DS030 (v1.8) October 10, 2001
1-800-255-7778
Product Specification