Table of Contents
Table of Contents
Features ................................................................................................. 1
Description ............................................................................................ 1
Block Diagram ....................................................................................... 3
SFR Mapping ......................................................................................... 4
Pin Configurations ................................................................................ 9
Port Types ........................................................................................... 13
Oscillator ............................................................................................. 14
Registers ............................................................................................................ 14
Functional Block Diagram .................................................................................. 15
Enhanced Features ............................................................................. 16
X2 Feature.......................................................................................................... 16
Dual Data Pointer Register (DPTR) ................................................... 20
Expanded RAM (XRAM) ...................................................................... 23
Registers ............................................................................................................ 25
Timer 2 ................................................................................................. 26
Auto-reload Mode............................................................................................... 26
Programmable Clock-out Mode.......................................................................... 27
Registers ............................................................................................................ 29
Programmable Counter Array (PCA) ................................................. 31
Registers ............................................................................................................ 33
PCA Capture Mode ............................................................................................ 39
16-bit Software Timer/ Compare Mode .............................................................. 40
High-speed Output Mode ................................................................................... 41
Pulse Width Modulator Mode ............................................................................. 42
PCA Watchdog Timer......................................................................................... 42
Serial I/O Port ...................................................................................... 44
Framing Error Detection ..................................................................................... 44
Automatic Address Recognition ......................................................................... 45
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ATMEL [ ATMEL ]
