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MM-6795FT
Extended
Temperature 256MB VME/VME64 Non-Volatile
FLASH or NVRAM Memory Module |
| Features |
Capacity
CMOS NVRAM: 4, 8, 16, 32, 64MB
Flash Memory: 4, 8, 16, 32, 64, 128,
256MB |
Cycle/Access Time
CMOS NVRAM: 150/100 nsec Flash
memory: 200/150 nsec (read only
mode) |
Data retention for CMOS
3 years with lithium batteries
4 weeks with rechargeable NiCad
batteries |
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Compatible with VME/VME64
A32/A24/D64/D32/D16/D8 (UAT) (BLT)
(MBLT) |
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On-board timer provides 1 usec to 16
msec in 1 usec increments for Flash
timing requirements |
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Block Transfer of 256 bytes for VME
and 2KB for VME64 |
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Two on-board redundant, fused lithium
or NiCad batteries |
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Module Selection on 1MB boundaries,
switch-selectable |
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Description |
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A
high-speed, high density memory module, the
MM-6795C/F provides up to 64MB of CMOS NVRAM or
256MB of FLASH memory on one board. The
MM-6795C/F is VME/VME64 bus compatible. Boards
operate with block transfer (BLT) of 256 bytes
for VME and 2KB for VME64 (MBLT).
A
FLASH memory software driver example is provided
on a floppy diskette along with a sample listing
in "C" code. Software drivers for different
operating systems are also available.
With CMOS NVRAM, the MM-6795C has
three on-board, redundant, fused batteries to
retain memory in the event of power loss.
Batteries may be either rechargeable NiCad or
non-rechargeable lithium types. On-board LED's
and a control status indicate battery condition.
Reliability is ensured by burn-in
and running memory diagnostics that check
operation for 48 hours while temperature-cycling
boards from -20 to +71°C. |
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MM-6795FT
Specifications |
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Capacity
:
4M, 8M, 16M, 32M, 64M, 128M, 256MB |
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Cycle/Access Time :
CMOS Static RAM: 150/100 nsec (adjustable)
Flash Memory: 150/100 nsec (adjustable) |
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Address : 32-bits plus
a 6-bit memory address modifier |
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Data In/Data Out :
8, 16, 32, 64 bits (UAT) and block transfer
(BLT) of 256 bytes for VME, and 2KB for
VME64 (MBLT) |
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Modes of Operation :
Read, write, read-modify-write |
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Module Selection : 1MB
boundaries, switch selectable |
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Interface : VME/VME64 |
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On-Board Batteries :
Three redundant, fused lithium or NiCad
batteries; each NiCad battery has its own
charger. Each battery type has a voltage
monitor and LEDs to indicate battery status. |
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Battery Types : NiCad
(rechargeable) Rating: 100 mA/hr each, 3.6V,
Data retention: 4 weeks, Lithium
(non-rechargeable) Rating: 1500 mA/hr each,
3.6V Data retention: 3 years |
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Operating Temperature
: -20 to +71°C |
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Storage Temperature :
-40 to +85°,C Relative |
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Relative Humidity : Up
to 95% without condensation |
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Flash Programming Power
Requirements : +12V Vpp switchable under
software control. |
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Operating Power
Requirements : +5V (fully pop.) Standby
1.6A Operate 1.8A, +12V (programming)
Operate 5mA |
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