Enclustra Mercury ZX1 - QSPI Flash Memory Details

Parameter Value
Memory voltage 1.5 V (for DDR3)/1.35 V (for DDR3L)
Data width 16 bit
Clock period 1250 - 3300 ps
Bank address bits 3
Row address bits 14
Column address bits 10
trefi 7.8 us
trfc 260 ns
tras 37.5 ns
trp 15 ns
trcd 15 ns
Table 25: DDR3 SDRAM (PL) Parameters
2.16.5 DDR3 Low Voltage Operation
Please refer to Section 2.15.5 for details on the DDR3 low power mode.
2.17 QSPI Flash
The QSPI flash can be used to boot the PS, and to store the FPGA bitstream, ARM application code and
other user data.
2.17.1 QSPI Flash Type
Table 26 describes the memory availability and configuration on the Mercury ZX1 SoC module.
As there is one QSPI flash chip equipped on the Mercury ZX1 SoC module, type “single” must be selected
when programming the flash from Vivado tools.
Flash Type Size Manufacturer
S25FL512S 512 Mbit Cypress (Spansion)
Table 26: QSPI Flash Types
Warning!
Other flash memory devices devices may be equipped in future revisions of the Mercury ZX1 SoC
module. Please check the user manual regularly for updates.
D-0000-403-002 33 / 56 Version 05, 25.07.2019