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CP321
2.2
Memory
2.2.1
System Memory (SDRAM)
The main memory of the CP321 consists of 32, 64, 128 or 256 MB of SDRAM soldered onto
the board for mechanical stability, provides ECC support with a maximum memory speed of
132 MHz.
2.2.2
Flash
Four or eight megabyte of soldered Flash memory accommodates the bootstrap loader soft-
ware and can be used to store a ROMable operating system and user data. This Flash memory
is 8-bit wide and windowed with window sizes of 512 kB.
2.2.3
EEPROM's
Two, 64-kbit serial EEPROM's are provided, organized 8192 x 8. One EEPROM is for system
purposes; the other is for the user. Both EEPROM's can be write protected. These EEPROM's
are connected to the I2C bus provided by the MPC8245.
2.2.4
Memory Expansion Sockets (DIL600)
The CP321 provides two, 32-pin DIL sockets on which to place Flash, SRAM, non-volatile
SRAM, or other DIL600 devices on the board. Access to this memory is controlled by the on-
board logic.
The following devices may be added to the CP321 via the 32-pin DIL600 socket:
• standard EPROM devices;
• standard Flash memory of up to 512 kB (e.g. 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 envi-
ronment and guarantee a minimum data retention of 10 years (e.g. DS1250Y-100).
In addition, as an option, socket 2 also comes with 36 pins. This can be done to provide the
possibility of using 1 MB and 2 MB NVSRAM from Dallas Semiconductor (DS1265/70). These
devices can then be accessed in pages of 512 kB.
• DiskOnChip 2000 Flash memory.
This type of Flash memory from M-Systems comes in versions with two different
height profiles: low profile or high profile. The low profile modules can be used with
all variants of the CP321 with their options. The high profile modules can only be
used in conjunction with the CP320-IO1. If the CP320-TR1/TR2 is also installed
with the CP320-IO1, then only one module can be installed and only on socket 2.
Refer to the current M-Systems data sheets for types available.
To prevent these devices from dislodging from their sockets due to shock or vibration it is pos-
sible to secure them using a wire strap.
ID 24977, Rev. 02
© 2003 Kontron Modular Computers GmbH
Functional Description
Page 2 - 5
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