ProASICPLUS Flash Family FPGAs 2- 54 v5.9 Embedded Memory Specifications
參數(shù)資料
型號： APA075-TQG144I
廠商： Microsemi SoC
文件頁數(shù)： 140/178頁
文件大?。?/td> 0K
描述： IC FPGA PROASIC+ 75K 144-TQFP
標準包裝： 60
系列： ProASICPLUS
RAM 位總計： 27648
輸入/輸出數(shù)： 107
門數(shù)： 75000
電源電壓： 2.3 V ~ 2.7 V
安裝類型： 表面貼裝
工作溫度： -40°C ~ 85°C
封裝/外殼： 144-LQFP
供應商設備封裝： 144-TQFP（20x20）
ProASICPLUS Flash Family FPGAs
2- 54
v5.9
Embedded Memory Specifications
This section discusses ProASICPLUS SRAM/FIFO embedded
memory and its interface signals, including timing
diagrams that show the relationships of signals as they
pertain to single embedded memory blocks (Table 2-51).
Table 2-13 on page 2-21 shows basic SRAM and FIFO
configurations. Simultaneous read and write to the same
location must be done with care. On such accesses the DI
bus is output to the DO bus. Refer to the ProASICPLUS
RAM and FIFO Blocks application note for more
information.
Enclosed Timing Diagrams—SRAM Mode:
Embedded Memory Specifications
The difference between synchronous transparent and
pipeline modes is the timing of all the output signals
from the memory. In transparent mode, the outputs will
change within the same clock cycle to reflect the data
requested by the currently valid access to the memory. If
clock cycles are short (high clock speed), the data
requires most of the clock cycle to change to valid values
(stable signals). Processing of this data in the same clock
cycle is nearly impossible. Most designers add registers at
all outputs of the memory to push the data processing
into the next clock cycle. An entire clock cycle can then
be used to process the data. To simplify use of this
memory
setup,
suitable
registers
have
been
implemented as part of the memory primitive and are
available to the user in the synchronous pipeline mode.
In this mode, the output signals will change shortly after
the second rising edge, following the initiation of the
read access.
Table 2-51 Memory Block SRAM Interface Signals
SRAM Signal
Bits
In/Out
Description
WCLKS
1
In
Write clock used on synchronization on write side
RCLKS
1
In
Read clock used on synchronization on read side
RADDR[0:7]
8
In
Read address
RBLKB
1
In
True read block select (active Low)
RDB
1
In
True read pulse (active Low)
WADDR[0:7]
8
In
Write address
WBLKB
1
In
Write block select (active Low)
DI[0:8]
9
In
Input data bits [0:8], [8] can be used for parity In
WRB
1
In
Negative true write pulse
DO[0:8]
9
Out
Output data bits [0:8], [8] can be used for parity Out
RPE
1
Out
Read parity error (active High)
WPE
1
Out
Write parity error (active High)
PARODD
1
In
Selects odd parity generation/detect when high, even when low
Note: Not all signals shown are used in all modes.
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APA075-TQGB 制造商:ACTEL 制造商全稱:Actel Corporation 功能描述:ProASIC Flash Family FPGAs
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