參數(shù)資料
型號: 17512LJC
廠商: Xilinx, Inc.
英文描述: Serial Configuration PROMs
中文描述: 串行配置PROM的
文件頁數(shù): 5/10頁
文件大?。?/td> 72K
代理商: 17512LJC
December 10, 1997 (Version 1.1)
5-5
Standby Mode
The PROM enters a low-power standby mode whenever
CE is asserted High. The output remains in a high imped-
ance state regardless of the state of the OE input.
Programming
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.
Notes:
1.
The XC1700 RESET input has programmable polarity
2.
TC = Terminal Count = highest address value. TC+1 = address 0.
IMPORTANT:
Always tie the V
PP
pin to V
CC
in your application. Never leave V
PP
floating.
Table 1: Truth Table for XC1700 Control Inputs
Control Inputs
Internal Address
Outputs
RESET
CE
DATA
active
3-state
3-state
3-state
3-state
CEO
High
Low
High
High
High
I
cc
Inactive
Low
if address < TC: increment
if address > TC: don’t change
Held reset
Not changing
Held reset
active
reduced
active
standby
standby
Active
Inactive
Active
Low
High
High
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