AN3029 datasheet(20/42 Pages) STMICROELECTRONICS

부품명	AN3029

상세설명	Getting started with STM8L and STM8AL

PDF	42 Pages

Scroll/Zoom	100%

제조업체	STMICROELECTRONICS [STMicroelectronics]

홈페이지	http://www.st.com

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20 / 42 page

Reference design

AN3029

20/42

DocID16139 Rev 5

7.2

Schematics

Figure 10. Reference design

1. If these components are removed, they have to be replaced by a short connection.

2. Optional: if a separate, external reference voltage is connected on VREF+, the two capacitors (100 nF and 1 µF) must be

connected. VREF+ is either connected to VDDA or VREF.

3. One 100 nF Ceramic capacitor for each VDDx pin and one single 1 µF Tantalum or Ceramic capacitor.

VDD1

VDDA

VREF+

VSS1/2 ... N

VLCD

NRST

OSC_IN

OSC_OUT

OSC32_IN

OSC32_OUT

Biggest package

20pF

1-16MHz

0 Ohm

20pF

32.768kHz

6.8pF

1uF

Only if accurate High Speed

Oscillator is needed

1uF

For noisy

environment

VSS

3.6V-1.8V

(1.65V)

0 Ohm

External reset circuit

To power LCD

specifically

ai18711b

(see note 2)

VDD2

VDD3

VDD4

(see note 3)

VREF

1uF

VDD

VSS

VDD

VSS

2.5V<V LCD<3.6V

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