Kontron VMP1 - Manual (Page 30)

VMP1 Functional Description
ID 19972, Rev. 0101 Page 2 - 8 ® PEP Modular Computers GmbH
2.4.2 Memory
2.4.2.1 System Memory (DRAM)
The main memory of the VMP1 consists of 32 MB or 64 MB SDRAM (128 MB available
on request) soldered onto the board for mechanical stability.
The VMP1 provides ECC support (optional) and a maximum memory speed of 100MHz.
2.4.2.2 Flash
4 or 8 MB of soldered Flash memory accommodate the bootstrap loader software and
can be used to store ROMable operating systems or user data. This Flash memory is 8-
bit wide and windowed with window sizes of 512 kB.
2.4.2.3 EEPROM
A serial EEPROM is provided, organised into 8 blocks with 256 bytes per block
(24LC16). This EEPROM is connected to the I2C bus provided by the MPC8240.
2.4.2.4 Memory Expansion Socket (DIL600)
The VMP1 provides one 32-pin DIL socket on which to place SRAM, non-volatile SRAM
or other DIL600 devices on the board. Access to this Memory is controlled by the
onboard logic.
The following devices may be added to the VMP1 via the 32-pin DIL600 socket:
• Standard Flash memory of up to 512 kB, for example, the AMD29F010 and
AMD29F040
• The NV SRAM from Dallas Semiconductor. These devices are available in the
temperature range –40°C to +85°C for the industrial environment and guarantee
a minimum data retention of 10 years (e.g. DS1250Y-100).
• Disk-on-chip Flash memory. In order to achieve flexibility with low cost, the VMP1
Flash disk is not soldered but connected via a special module from M-Systems
(Disk-on-Chip 2000) which comes in the following sizes:
2 - 24 MB (dimensions 41.7 x 17.9 x 5.6mm);
4 - 144 MB (dimensions 42.0 x 18.3 x 11.8mm).