AT94K05AL-25AQC Atmel, AT94K05AL-25AQC Datasheet - Page 11
AT94K05AL-25AQC
Manufacturer Part Number
AT94K05AL-25AQC
Description
Manufacturer
Atmel
Datasheet
1.AT94K05AL-25AQC.pdf
(204 pages)
Specifications of AT94K05AL-25AQC
Device System Gates
5000
Propagation Delay Time
12.1ns
Operating Supply Voltage (typ)
3.3V
Operating Supply Voltage (max)
3.6V
Operating Supply Voltage (min)
3V
Operating Temperature Classification
Commercial
Operating Temperature (min)
0C
Operating Temperature (max)
70C
Mounting
Surface Mount
Pin Count
100
Package Type
PQFP
Lead Free Status / RoHS Status
Not Compliant
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1138I–FPSLI–1/08
tions in horizontally aligned RAM blocks. For the left-most RAM blocks, RAddr is on the left and
WAddr is on the right. For the right-most RAM blocks, WAddr is on the left and RAddr is tied off.
For single-ported RAM, WAddr is the READ/WRITE address port and Din is the (bi-directional)
data port. The right-most RAM blocks can be used only for single-ported memories. WE and OE
connect to the vertical express buses in the same column on Plane V
WAddr, RAddr, WE and OE connect to express buses that are full length at array edge.
Reading and writing the 32 x 4 dual-port RAM are independent of each other. Reading the
32 x 4 dual-port RAM is completely asynchronous. Latches are transparent; when Load is logic
1, data flows through; when Load is logic 0, data is latched. Each bit in the 32 x 4 dual-port RAM
is also a transparent latch. The front-end latch and the memory latch together and form an edge-
triggered flip-flop. When a bit nibble is (Write) addressed and LOAD is logic 1 and WE is logic 0,
DATA flows through the bit. When a nibble is not (Write) addressed or LOAD is logic 0 or WE is
logic 1, DATA is latched in the nibble. The two CLOCK muxes are controlled together; they both
select CLOCK or they both select “1”. CLOCK is obtained from the clock for the sector-column
immediately to the left and immediately above the RAM block. Writing any value to the RAM
Clear Byte during configuration clears the RAM, see
Figure
Figure 2-6.
2-4.
FPGA RAM Connections (One RAM Block)
AT94KAL Series FPSLIC
Figure 2-3
and
CLK
CLK
CLK
CLK
CLK
WAddr
WE
OE
1
32X4 RAM
Din
Sector Clock Mux
and V
Dout
RAddr
2
, respectively.
11
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