CY14NVSRAMKIT-001 nvSRAM Development Kit User Guide, Doc. # 002-03522 Rev. *A
16
Kit Overview
Figure 3-4. Headers to FM4 MCU Evaluation Board (SK-FM4-U120-9B560)
3.2.4
Interrupt (INT and INT1) Pins
The DVK board provides the nvSRAM RTC interrupt output via INT and INT1 pins for the 165 FBGA
and 54-TSOP II packages respectively; see
Figure 3-5
. Loading a jumper to short pin 1 and 2 of the
J5 connects the 165 FBGA nvSRAM interrupt output to the INT/INT1 STATUS LED. Similarly,
loading a jumper to short pin 3 and 4 of the J5 connects the 54 TSOP II nvSRAM interrupt output to
the INT/INT1 STATUS LED. The default loading for jumper J5 shorts pin 1 and 2 position.
The INT1 pin functionality is not available on the kit because the 54 TSOP II package is not
populated by default.
CAUTION:
When the 54 TSOP II nvSRAM is populated (by the user), it is recommended to connect only one
jumper either on pin 1 and pin 2 or on pin 3 and pin 4 of J5 to monitor the interrupt outputs. Connecting two
jumpers to enable the interrupt of both devices on the INT/INT1 STATUS LED can cause output contention
when the output driver of either nvSRAM is configured as active HIGH (push or pull) output.
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