Brand: PROMESS

Type:850040060P

Origin: the United States

Warranty: 365 days

Colour: new/used

Shipping method: Courier delivery

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MC68040/MC68LC040 MPU The MVME162 is equipped with an MC68040 or MC68LC040 microprocessor. The MC68040/MC68LC040 have on-chip instruction and data caches; the MC68040 also provides a floating-point coprocessor. Refer to the M68040 Microprocessor User’s Manual for more information. EPROM and Flash Memory The MVME162 implementation includes four 2-Mbit Flash devices organized in a 256Kbit x 8 configuration. The EPROM location is a standard JEDEC 32- pin PLCC capable of 4 Mbit densities (128 Kbit x 8; 256 Kbit X 8; 512 Kbit x 8; 1 Mbit x8) organized as a 512Kbit x 8 device. A jumper setting (GPIO3, pins 9- 10 on J22) allows reset code to be fetched either from Flash memory (GPIO3 installed) or from the EPROM (GPIO3 removed). SRAM The MVME162 provides 512KB of 32-bit-wide onboard static RAM in a single non-interleaved architecture with onboard battery backup. The worst case elapsed time for battery protection is 200 days. Specifics on SRAM performance can be found in the section on the SRAM Memory Controller in the MCchip Programming Model in the MVME162 Embedded Controller Programmer’s Reference Guide. The SRAM arrays are not parity protected. The battery backup function for the MVME162 SRAM is provided by a Dallas DS1210S device that supports primary and secondary power sources. 

In the event of a main board power failure, the DS1210S checks power sources and switches to the source with the higher voltage. If the voltage of the backup source is lower than two volts, the DS1210S blocks the second memory cycle; this allows software to provide an early warning to avoid data loss. Because the second access may be blocked during a power failure, software should do at least two accesses before relying on the data. The MVME162 provides jumpers (on J20) that allow either power source of the DS1210S to be connected to the VMEbus +5V STDBY pin or to one cell of the onboard battery. For example, the primary system backup source may be a battery connected to the VMEbus +5V STDBY pin and the secondary source may be the onboard battery. If the system source should fail or the board is removed from the chassis, the onboard battery takes over.