Technical Data
2.4 Memory - Interface
Size
512Mbyte
Technology
Double data rate SDRAM type 3
Data rate (theoretical
maximum)
800 MHz RAM clock, 1600 x 64 MBit/s
Interface
1 x 64 Bit + ECC consisting of 4 x16 d 1 x16 device for ECC
2.5 Real Time Clock (RTC)
Type
Epson RX8035
Connection
I
2
C bus
Accuracy
-5 ppm at T
amb
= 25 °C (< 13 s/month)
Battery type
Lithium manganese dioxide battery, coin cell 3 V, battery type CR2032
Buffering
Battery CR2032, at least 5 years battery life at 25°C
Maintenance / Service
The battery can be easily changed. The battery holder is located inside
the enclosure, see page 22. For a change of the battery without data
loss, a storage capacitor, connected with the RTC, allows a change of
the battery without interruption of supply voltage within 15 seconds.
2.6 Boot – ROM
Size
16 MByte
Type
Serial NOR Flash
Connection
Serial Peripheral Interface min. 50 MHz data rate
Data retention
100 000 Programming/erase cycles, 20 years data retention
Content
Boot Sequenzer
Preboot Loader
Bootloader Firmware (U-Boot)
Fail Save Mechanism
Second Flash with „Fallback“ firmware. Switchable via jumper.
2.7 EEPROM
Size
- 32 Kbit I2C EEPROM for U-Boot environment
Internal use only: - 32 Kbit I2C EEPROM for Bootstrapping,
- 4 Kbit I2C EEPROM for SPD info DDR RAM
Type
Serial CMOS EEPROM
Connection
I
2
C Bus
Data retention
1 000 000 Programming/erase cycles, 20 years data retention
Operating mode
Fast (400KHz) I
2
C protocol
Content
- Serial number of the board
- MAC addresses
- U-Boot environment
- SPD data of the DDR-RAM
Page 12 of 37
Hardware Manual • Doc. No.: I.2007.21 / Rev. 1.1
EPPC-T10