Rainbow-electronics AT77C105A Manual do Utilizador descarregar pdf (Página 12)

AT77C105A [Preliminary]

5419A–BIOM–01/05

Sensor and Block Diagram

Figure 7. Functional Block Diagram

The circuit is divided into the following main sections:

• An array or frame of 8 × 232 pixels + 1 dummy column

• An analog to digital converter

• An on-chip oscillator

• Control and status registers

• Navigation and click units

• Slow and fast serial interfaces

FPL VDDA GNDA VDDD

GNDD RST

FSS

SCK

MISO

MOSI

SSS

IRQ

SCANEN

TESTA

Pixel Array

(232 x 8)

Array

CTRL

Click

CTRL

VDD_IO

Click Pixels

(12)

Acquisition

Navigation

Algorithms

Oscillator (420 kHz)

Click

Algorithm

Watchdog

Heating

Test

Slow Serial

Interface

SPI

(200 kHz)

Control

Fast Serial

Interface

SPI

(8-16 MHz)

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 38 39

Features 1
Description 1
Applications 1
AT77C105A [Preliminary] 10
AT77C105A [Preliminary] 11
Regional Headquarters 39

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