PSOC4200M Datasheet, PDF (14/42 Pages) Cypress Semiconductor – Programmable System-on-Chip

PSoC^® 4: PSoC 4200M Family
Datasheet
Power
The supply voltage range is 1.71 to 5.5 V with all functions and
circuits operating over that range.
The PSoC 4200M family allows two distinct modes of power
supply operation: Unregulated External Supply and Regulated
External Supply modes.
Unregulated External Supply
In this mode, the PSoC 4200M is powered by an External Power
Supply that can be anywhere in the range of 1.8 to 5.5 V. This
range is also designed for battery-powered operation, for
instance, the chip can be powered from a battery system that
starts at 3.5V and works down to 1.8 V. In this mode, the internal
regulator of the PSoC 4200M supplies the internal logic and the
VCCD output of the PSoC 4200M must be bypassed to ground
via an external Capacitor (in the range of 1 to 1.6 µF; X5R
ceramic or better).
The grounds, VSSA and VSS, must be shorted together. Bypass
capacitors must be used from VDDD and VDDA to ground,
typical practice for systems in this frequency range is to use a
capacitor in the 1 µF range in parallel with a smaller capacitor
(0.1 µF, for example). Note that these are simply rules of thumb
and that, for critical applications, the PCB layout, lead induc-
tance, and the Bypass capacitor parasitic should be simulated to
design and obtain optimal bypassing.
Power Supply
VDDD–VSS and
VDDIO-VSS
VDDA–VSSA
VCCD–VSS
VREF–VSSA
(optional)
Bypass Capacitors
0.1 µF ceramic at each pin plus bulk
capacitor 1 to 10 µF.
0.1 µF ceramic at pin. Additional 1 µF to
10 µF bulk capacitor
1 µF ceramic capacitor at the VCCD pin
The internal bandgap may be bypassed
with a 1 µF to 10 µF capacitor for better
ADC performance.
Regulated External Supply
In this mode, the PSoC 4200M is powered by an external power
supply that must be within the range of 1.71 to 1.89 V (1.8 ±5%);
note that this range needs to include power supply ripple. VCCD
and VDDD pins are shorted together and bypassed. The internal
regulator is disabled in firmware.
Document Number: 001-93963 Rev. *G
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