CY8CKIT-040 PSoC
®
4000 Pioneer Kit Guide, Doc. # 001-91316 Rev. *F
46
Hardware
4.3.1.10
Cypress Ferroelectric RAM (F-RAM)
The baseboard contains an F-RAM device (FM24W256); see
, which can be accessed
through I
2
C lines by either of the PSoC devices – PSoC 5 LP or PSoC 4 – or by both. The F-RAM is
256 Kb (32 KB) in size with the I
2
C speed up to 1 Mbps. The I
2
C slave address of the F-RAM device
is 7-bit wide, and the LSB three bits are configurable through physical pins and are hardwired to 000
on the board. By default, the address of the F-RAM device used on the board is 0x50. This can be
modified by changing the R19/R18, R17/R16, and R15/R14 pairs. Refer to
for details on how to change the F-RAM address using these resis-
tors.
Using FM24W256 F-RAM on page 113
provides an example implementation showing how to
use this F-RAM device with PSoC 4 and share it between Bridge Control Panel over the PSoC 5LP
USB-I
2
C bridge.
Figure 4-17. Cypress F-RAM
Содержание CY8CKIT-040 PSoC 4000 Pioneer Kit
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