S6E2H Datasheet, PDF (58/163 Pages) Cypress Semiconductor – 32-bit ARM ® Cortex ® -M4F FM4 Microcontroller

S6E2H Series
Notes on Power-on
Turn power on/off in the following order or at the same time.
If not using the A/D converter and D/A converter, connect AVCC = VCC and AVSS = VSS.
Turning on:
Turning off:
VBAT → VCC
VCC → AVCC → AVRH
VCC → VBAT
AVRH → AVCC → VCC
Serial Communication
There is a possibility to receive wrong data due to the noise or other causes on the serial communication.
Therefore, design a printed circuit board so as to avoid noise.
Consider the case of receiving wrong data due to noise, perform error detection such as by applying a checksum of data at the end.
If an error is detected, retransmit the data.
Differences in Features among the Products with Different Memory Sizes and between Flash Products and
MASK Products
The electric characteristics including power consumption, ESD, latch-up, noise characteristics, and oscillation characteristics among
the products with different memory sizes and between Flash products and MASK products are different because chip layout and
memory structures are different.
If you are switching to use a different product of the same series, please make sure to evaluate the electric characteristics.
Pull-Up Function of 5 V Tolerant I/O
Please do not input the signal more than VCC voltage at the time of Pull-Up function use of 5 V tolerant I/O.
Adjoining Wiring on Circuit Board
If wiring of the crystal oscillation circuit X1A adjoins and also runs in parallel with the wiring of P48/VREGCTL, there is a possibility
that the oscillation erroneously counts because X1A has noise with the change of P48/VREGCTL. Keep as much distance as
possible between both wirings and insert the ground pattern between them in order to avoid this possibility.
P46/
X0A
Device
P47/
P48/
P49/
X1A VREGCTL VWAKEUP
Not allowed to run
both wirings in parallel
Ground
Insert the ground pattern
Handling when Using Debug Pins
When debug pins(TDO/TMS/TDI/TCK/TRSTX or SWO/SWDIO/SWCLK) are set to GPIO or other peripheral functions, only set
them as output, do not set them as input.
10. Memory Size
See Memory size in 2. Product Lineup to confirm the memory size.
Document Number: 001-98943 Rev *C
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