参数资料
型号: ATT3042-50S44I
厂商: Electronic Theatre Controls, Inc.
元件分类: FPGA
英文描述: Field-Programmable Gate Arrays
中文描述: 现场可编程门阵列
文件页数: 62/80页
文件大小: 528K
代理商: ATT3042-50S44I
Data Sheet
February 1997
ATT3000 Series Field-Programmable Gate Arrays
62
Lucent Technologies Inc.
Electrical Characteristics
(continued)
* At powerup, V
CC
must rise from 2 V to V
CC
minimum in less than 25 ms. If this is not possible, configuration can be delayed by holding
RESET
low until V
CC
has reached 4 V. A very long V
CC
rise time of >100 ms or a nonmonotonically rising V
CC
may require a >1 μs high level
on
RESET
, followed by a >6 μs low level on
RESET
and DONE/
PROG
after V
CC
has reached 4 V.
Figure 35. General FPGA Switching Characteristics
Testing of the switching characteristics is modeled after testing specified by MIL-M-38510/605. Devices are 100%
functionally tested. Actual worst-case timing is provided by the timing calculator or simulation.
*
RESET
timing relative to valid mode lines (M0, M1, M2) is relevant when
RESET
is used to delay configuration.
PWRDWN
transitions must occur while V
CC
> 4 V.
Table 25. General FPGA Switching Characteristics
Signal
Description
Symbol
Min
Max
Unit
RESET
*
M0, M1, and M2 Setup Time
M0, M1, and M2 Hold Time
RESET
Width (LOW) Required for Abort
T
MR
(2)
T
RM
(3)
T
MRW
(4)
1
4.5
6
μs
μs
μs
DONE/
PROG
Width Low Required for Reconfiguration
INIT
Response After DONE/
PROG
is Pulled Low
T
PGW
(5)
T
PGI
(6)
6
7
μs
μs
V
CC
Powerdown V
CC (
commercial/industrial)
V
CCPD
2.3
V
RESET
M0/M1/M2
DONE/PROG
INIT
(OUTPUT)
T
MRW
PWRDWN
VALID
V
CC
(VALID)
T
MR
T
RM
T
PGW
T
PGI
USER STATE
CONFIGURE
CLEAR STATE
See *
V
CCPD
2
5
3
6
4
5-3124(F)
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