DSM2180F3-90T6 STMicroelectronics, DSM2180F3-90T6 Datasheet - Page 15

• Manufacturer Part Number: DSM2180F3-90T6
• Description: IC FLASH 1MBIT 90NS 52TQFP
• Manufacturer: STMicroelectronics

Specifications of DSM2180F3-90T6

• Format - Memory: FLASH
• Memory Type: FLASH
• Memory Size: 1M (128K x 8)
• Speed: 90ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 52-TQFP, 52-VQFP
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (min): 5.5V
• Operating Supply Voltage (max): 4.5V
• Mounting: Surface Mount
• Pin Count: 52
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 497-1321

SPECIFYING MEM MAP WITH PSDSOFT EXPRESS
The memory map shown in Figure 7 can be easily
specified with PSDsoft Express
click environment. PSDsoft Express
ate Hardware Definition Language (HDL) state-
Figure 8. HDL Statements Generated from PSDsoft Express to Implement Memory Map
Specifying these equations using PSDsoft Ex-
press
specify the equation for the 16K Byte Flash mem-
ory segment, fs2. Notice how fs2 can reside in two
different address spaces depending on the state of
the control signals from the DSP (
TM
is very simple. Figure 9 shows how to
! _cs_uart = ((address >= ^h0200) & (address <= ^h0207) & (!_ioms & _dms & _bms));
# ((page == 0) & (address >= ^h0000) & (address <= ^h3FFF) & (_ioms & !_dms &
# ((page == 1) & (address >= ^h0000) & (address <= ^h3FFF) & (_ioms & !_dms &
# ((page == 2) & (address >= ^h0000) & (address <= ^h3FFF) & (_ioms & !_dms &
# ((page == 3) & (address >= ^h0000) & (address <= ^h3FFF) & (_ioms & !_dms &
# ((page == 4) & (address >= ^h0000) & (address <= ^h3FFF) & (_ioms & !_dms &
# ((page == 5) & (address >= ^h0000) & (address <= ^h3FFF) & (_ioms & !_dms &
# ((page == 6) & (address >= ^h0000) & (address <= ^h3FFF) & (_ioms & !_dms &
# ((page == 7) & (address >= ^h0000) & (address <= ^h3FFF) & (_ioms & !_dms &
csiop = ((address >= ^h0000) & (address <= ^h00FF) & (!_ioms & _dms & _bms));
fs6 = ((address >= ^h18000) & (address <= ^h1BFFF) & (_ioms & _dms & !_bms))
fs7 = ((address >= ^h1C000) & (address <= ^h1FFFF) & (_ioms & _dms & !_bms))
fs4 = ((address >= ^h10000) & (address <= ^h13FFF) & (_ioms & _dms & !_bms))
fs5 = ((address >= ^h14000) & (address <= ^h17FFF) & (_ioms & _dms & !_bms))
fs3 = ((address >= ^hC000) & (address <= ^hFFFF) & (_ioms & _dms & !_bms))
fs2 = ((address >= ^h8000) & (address <= ^hBFFF) & (_ioms & _dms & !_bms))
fs0 = ((address >= ^h0000) & (address <= ^h3FFF) & (_ioms & _dms & !_bms))
fs1 = ((address >= ^h4000) & (address <= ^h7FFF) & (_ioms & _dms & !_bms))
TM
in a point-and-
IOMS
TM
will gener-
,
DMS
, or
_bms));
_bms));
_bms));
_bms));
_bms));
_bms));
_bms));
_bms));
TM
ments of the ABEL language. Figure 8 shows the
resulting equations generated by PSDsoft Ex-
press
BMS
the DSM Page Register outputs. This specification
process is repeated for all other Flash memory
segments, the csiop register block, and any exter-
nal chip select signals (UART, etc.).
) and the memory page number coming from
TM
.
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