NCA9555B
INDEX
Datasheet (EN) 1.1
1. PIN CONFIGURATION AND FUNCTIONS.............................................................................................................................3
2. ABSOLUTE MAXIMUM RATINGS .........................................................................................................................................4
3. ESD RATINGS (ELECTROSTATIC DISCHARGE PROTECTION) .............................................................................................4
4. RECOMMENDED OPERATING CONDITIONS .......................................................................................................................5
5. THERMAL CHARACTERISTICS ............................................................................................................................................5
6. SPECIFICATIONS ................................................................................................................................................................6
6.1. ELECTRICAL CHARACTERISTICS .......................................................................................................................................6
6.2. DYNAMIC CHARACTERISTICS...........................................................................................................................................8
6.3. PARAMETER MEASUREMENT INFORMATION.......................................................................................................................9
7. DETAILED DESCRIPTION..................................................................................................................................................10
7.1. FUNCTIONAL BLOCK DIAGRAM......................................................................................................................................10
7.2. FEATURE DESCRIPTION................................................................................................................................................11
7.2.1.
7.2.2.
I/O port.................................................................................................................................................................... 11
Interrupt (INT\ ) Output........................................................................................................................................... 11
7.3. DEVICE FUNCTIONAL MODES.........................................................................................................................................12
7.3.1. Power-On Reset.......................................................................................................................................................12
7.4. PROGRAMMING..........................................................................................................................................................12
7.4.1.
7.4.2.
7.4.3.
7.4.4.
7.4.5.
I2C Interface............................................................................................................................................................12
Start and Stop Conditions.......................................................................................................................................12
Bit Transfer..............................................................................................................................................................13
System Configuration .............................................................................................................................................13
Acknowledge ..........................................................................................................................................................14
7.5. REGISTER MAPS.........................................................................................................................................................14
7.5.1.
7.5.2.
7.5.3.
7.5.4.
7.5.5.
7.5.6.
Device Address ........................................................................................................................................................14
Control Register and Command Byte .....................................................................................................................15
Registers 0 and 1: Input port register pair ..............................................................................................................16
Registers 2 and 3: Output port registers .................................................................................................................16
Registers 4 and 5: Polarity inversion registers ........................................................................................................16
Registers 6 and 7: Configuration registers ..............................................................................................................17
7.6. BUS TRANSACTIONS ...................................................................................................................................................17
7.6.1.
Writing to the Port Registers ...................................................................................................................................17
7.6.2.
Reading the Port Registers .....................................................................................................................................18
8. APPLICATION DESIGN-IN INFORMATION.........................................................................................................................20
8.1. APPLICATION INFORMATION .........................................................................................................................................20
8.2. TYPICAL APPLICATION.................................................................................................................................................20
9. ORDER INFORMATION .....................................................................................................................................................21
10. DOCUMENTATION SUPPORT .........................................................................................................................................21
11. PACKAGE INFORMATION................................................................................................................................................22
12. TAPE AND REEL INFORMATION......................................................................................................................................26
13. REVISION HISTORY ........................................................................................................................................................27
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