AS1115 Просмотр технического описания (PDF) - austriamicrosystems AG

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AS1115

64 LEDs, I²C Interfaced LED Driver with Keyscan

austriamicrosystems AG 

AS1115

Datasheet - Detailed Description

8 Detailed Description

Block Diagram

Figure 16. Block Diagram (QSOP-24 Package)

Open/Short

Detection

+

–

+

–

Oszillator

VDD

24

IRQ

VDD

VDD

14

SCL

1

SDA

Digital Control

Logic

(PWM, Debounce,....)

I²C

Interface

Registers

Data - Registers

Control - Registers

Scan - Registers

19

VDD

13

ISET

VDD

RSET

8 15-18, 20-23

SEGA-G,

SEGDP

8 2-5, 7-10

DIG0 to DIG7

2 11, 12

KEYA, KEYB

6

GND

AS1115

Figure 17. ESD Structure

VDD

valid for the pins:

- IRQ

- SCL

- SDA

- ISET

- SEGA-G, SEGDP

- KEYA, KEYB

VDD

valid for the pins:

- DIG0 to DIG7

www.austriamicrosystems.com

Revision 1.03

8 - 24

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