STDL130
5-72
Samsung ASIC
SPARAM_HDL
High-Density Single-Port Asynchronous Static RAM
Parameter Description
SPARAM_HDL is the compiler that automatically generates symbol, netlist, timing model, power model and
layout according to the following parameters; Number of words(w), Number of bit per word(b), Column
mux(y) and Number of banks(ba).
Pin Descriptions
Pin Capacitance
Unit: [SL]
NOTE:
Each pin’s capacitance is exactly same regardless of available mux types for same bank.
Parameters
ba = 1
Ymux = 4
64
2048
16
128
4096
32
1
128
1
Ymux = 8
128
4096
32
256
8192
64
1
64
1
Ymux = 16
256
8192
64
512
16384
128
1
32
1
Ymux = 32
512
16384
128
1024
32768
256
1
16
1
Words(w)
Min
Max
Step
Min
Max
Step
Min
Max
Step
ba = 2
Bpw(b)
Name
CSN
I/O
Description
Chip Enable
Chip select input. The chip select signal acts as the memory enable signal
for selections of multiple blocks. When CSN is high, the memory goes to
stand-by (power down) mode and no access to the memory can occur.
Conversely, if low, a read or write access can occur. When CSN falls, an
access is initiated.
Write enable input. The write enable signal selects the type of memory
access. The high state for a read access and the low state for a write
access. Upon the rising edge of WEN, a write access completed and a read
access initiated.
Output enable input. The output enable signal controls the output drivers
from driven to tri-state condition unconditionally.
Address input bus. A[] should be stable when WEN is low. The address
selects the location to be accessed. When the address changes, the transi-
tion is detected and the internal clock pulse is generated.
Data input bus. The data input is written to the accessed location when
WEN is low.
Data output bus. The data output is data stored in the accessed location dur-
ing a read access. Data output driver has tri-state logic. When OEN is low,
the driver drives a certain value. Otherwise, data output keeps Hi-Z state.
During a write access, data on DOUT is predictable.
WEN
Read/Write
Enable
OEN
Data Output
Enable
Address
A [ ]
DI [ ]
Data Input
DOUT [ ]
Data Output
CSN
4.4212
WEN
4.2154
OEN
4.2154
A
DI
DOUT
17.6453
4.2154
3.3665