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Data sheet, Functional block diagram – Diodes AP389X User Manual

Page 7

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Data Sheet

Enhanced Multi-touch Capacitive Touch Screen Controller AP389X

Apr. 2013 Rev. 1. 0 BCD Semiconductor Manufacturing Limited

7

Functional Block Diagram













































Figure 4. Main AFE I/O Pin Assignment and Whole Chip’s Functional Block Diagram




Mode Control

Register Table

SDA

Analog signals S[23:1]

SCL

RSTN

D[38:1]

MUX

64K Flash

12K SRAM

I2C M/S

SFR

MCU

4~48M

OSC

CLK

MDU

INT

TESTEN

POR18
POR33

LVD

Stage 23

/

Stage 9

Stage 8

Stage 7

Stage 6

Stage 5

Stage 4

Stage 3

Stage 2

Stage 1

Stage 0

DAI

S/H

SWITC

H

MA

T

R

IX

SAR

8-bit

ADC

VDD18

VDD33

P3.6

S11

S10

S9

S8

S7

S6

S1

S3

S4

S5

S2

D1

D4

D6

D7

D8

D1

2

D1

1

D1

0

D2

D3

D9

D5

D1

3

D1

4

D1

5

D1

6

D1

7

D1

8

D1

9

D2

0

D2

1

P1.7

SAR

8-bit

ADC

VSS

D23

D24

D25

D29

D28

D27

D26

D22

D30

D31

D32

D33

D34

D35

D36

D37

D38

S12

S23

S22

S21

S20

S19

S18

S13

S15

S16

S17

S14

FIFO

896

ٛ

12-bit SRAM

(Baseline)

896

ٛ

8-bit SRAM

(CMOD_Buffer)

896

ٛ

12-bit SRAM

(SCAN_Buffer)

+

-