2.6 Optional Cypress Semper™ (Secure) Flash
The AURIX™ TCxx4 lite Kit provide the possibility to assemble an external flash. Usable devices are Cypress
Semper™ NOR Flash Device Family S25HL and Cypress Semper™ Secure NOR Flash Device Family S35HL in
SOIC-16 package. For more information about the flashs please see
https://www.cypress.com/products/semper-nor-flash-memory and https://www.cypress.com/event/semper-
secure-nor-flash-memories. If you assemble a flash then assemble also the ceramic capacitor C64 with 100 nF
(size 0603) and the resistor R67 with 0 Ω (size 0603). In case of use a Semper™ Secure NOR Flash you can also
assemble the resistor R68 with 0 Ω (size 0603) to connect the interrupt output of the flash to the AURIX™ pin
P11.10 (SCU_E_REQ6_3 on TC3X4; SCU_REQ12 on TC2X4). The AURIX™ support only single SPI protocol. Dual
and Quad SPI protocol is not possible.
The flash is connected to P22.0, P22.1, P22.3 (QSPI4 on TC3X4; QSPI3 on TC2X4). Pin P22.2 (Slave Select Output
3 of QSPI4 on TC3X4; Slave Select Output 12 of QSPI3 on TC2X4) is used as slave select.
Please note that the used QSPI is shared with the optional F-RAM (see Optional F-RAM).
2.7 Optional F-RAM
The AURIX™ TCxx4 lite Kit provide the possibility to assemble an external serial F-RAM. Usable devices are
Cypress F-RAM FM25VN10-G and Cypress F-RAM Serie CY15B in SOIC-8 package. Both packages, SO8-150 and
SO8-208, are possible to be assembled on this board. For more information about the F-RAMs please see
https://www.cypress.com/products/f-ram-nonvolatile-ferroelectric-ram.
If you assemble F-RAM then assemble also the ceramic capacitor C65 with 100 nF (size 0603).
The F-RAM is connected to P22.0, P22.1, P22.3 (QSPI4 on TC3X4; QSPI3 on TC2X4). Pin P23.1 (Slave Select
Output 6 of QSPI4 on TC3X4; Slave Select Output 13 of QSPI3 on TC2X4) is used as slave select.
Unfortunately, there is no connection on pin 3 (#WP) and pin 7 (#HOLD) of the F-RAM. Please check the
datasheet if the used F-RAM has internal weak pull-up connected or need an external connection to VDD. If
external connection is needed then make such a connection via wire wrap line.
Please note that the used QSPI is shared with the optional flash (see Optional Cypress Semper™ (Secure) Flash).
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