Rainbow Electronics ATA6839 - Manual (Page 4)

4
4955C–AUTO–09/07
ATA6839 [Preliminary]
17 CS
Chip select input; 5V/3.3V CMOS logic level input with internal pull up;
low = serial communication is enabled, high = disabled
18 CLK
Serial clock input; 5V/3.3V CMOS logic level input with internal pull down;
controls serial data input interface and internal shift register (f
max
= 2 MHz)
19 DI
Serial data input; 5V/3.3V CMOS logic level input with internal pull down; receives serial data from the
control device; DI expects a 16-bit control word with LSB being transferred first
20 OUT6 Output 6; see pin 1
21 OUT6 SENSE Only for testability in final test
22 OUT5 SENSE Only for testability in final test
23 OUT5 Output 5; see pin 1
24 NC Internal bond to GND
Table 2-1. Pin Description QFN24 (Continued)
Pin Symbol Function