触摸按键的电路图

Capsense 参考SCH1

2

3

4

A 2

BT1 1 BATTERY
J1

2

U3 U2 REG1117-5 VIN GND VOUT VOUT

A VDD 2 4 + C3
10u

3 1 BAV23C + C1
10u

3 C2 1u

VDD
R0 3K C4 0.1u

Gnd

Gnd

Gnd
XRES SCL SDA

VDD

J2 1 2 3 4 5 ISSP

1 2 POWER 3

1

D0 POWER

VDD
OCDE OCDO CCLK

B VDD C5 Cint2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 U1 VSS P0_7 P0_5 P0_3 P0_1 P2_7 P2_5 P2_3 P2_1 VDD P0_6 P0_4 P0_2 P0_0 P2_6 P2_4 P2_2 P2_0 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29

XRES HCLK

9 8 7 6 5 4 3 2 1 10

J3

B

C0 0.1

Slider7 Slider5 INTCAP1 Slider1 Slider3 RS DB7 DB5 OCDE R6 56

Slider6 Slider4 Slider2 Slider0 R/W E DB6 DB4 button5 button3

R2 1K

R3 1K

R4 1K

R5 1K

RJ45_ICE

VDD 1 2 3 4 5 6 7 8 9 10 11 12 13 14 VDD R10 2K
INTERRUPT I2CSDA I2CSCL

J4 VSS VD