TS68040 ATMEL Corporation, TS68040 Datasheet - Page 33

• Manufacturer Part Number: TS68040
• Description: 32-bit Mpu, 25-33 MHZ
• Manufacturer: ATMEL Corporation

6.7.5 - Transparent translation
Four transparent translation registers, two each for instruction and data accesses, have been provided on the TS 68040
MMU to allow portions of the logical address space to be transparently mapped and accessed without the need for corre-
ponding entries resident in the ATC. Each register can be used to define a range of logical addresses from 16 Mbytes to
4 Gbytes with a base address and a mask. All addresses within these ranges are not mapped, and are optionally protected
against user or supervisor accesses and write accesses. Logical addresses in these areas become the physical addresses
for memory access. The transparent translation feature allows rapid movement of large blocks of data in memory or I/O
space without disturbing the context of the on-chip ATCs or incurring delays associated with translation table searches.
7 - PREPARATION FOR DELIVERY
7.1 - Packaging
Microcircuits are prepared for delivery in accordance with MIL-M-38510 or TCS standard.
7.2 - Certificate of compliance
TCS offers a certificate of compliances with each shipment of parts, affirming the products are in compliance either with
MIL-STD-883 or TCS standard and guarantying the parameters not tested at temperature extremes for the entire temperature
range.
8 - HANDLING
MOS devices must be handled with certain precautions to avoid damage due to accumulation of static charge. Input protection
devices have been designed in the chip to minimize the effect of this static buildup. However, the following handling practices
are recommended :
a) Devices should be handled on benches with conductive and grounded surfaces.
b) Ground test equipment, tools and operator.
c) Do not handle devices by the leads.
d) Store devices in conductive foam or carriers.
e) Avoid use of plastic, rubber, or silk in MOS areas.
f) Maintain relative humidity above 50 percent if practical.
9 - PACKAGE MECHANICAL DATA
9.1 - 179 pins - PGA
* For untinned leads (gold).
Dim
H*
A
B
C
D
E
G
F
46.863 47.625
46.863 47.625
2.3876
4.318
1.143
1.143
0.432
Min
Millimeters
2.54 BSC
1.875
4.826
0.483
Max
1.4
1.4
1.845
1.845
0.094
0.170
0.045
0.045
0.017
Min
0.100 BSC
Inches
1.875
1.875
0.116
0.190
0.055
0.055
0.019
Max
33/38