
Preliminary W79E225A/227A Data Sheet
Publication Release Date: December 14, 2007
- 2 -
Revision A2.0
12.2
Timer/Counter 2............................................................................................................ 98
12.2.1
Capture Mode...............................................................................................................99
12.2.2
Auto-reload Mode, Counting up....................................................................................99
12.2.3
Auto-reload Mode, Counting Up/Down.......................................................................100
12.2.4
Baud Rate Generator Mode .......................................................................................101
WATCHDOG TIMER...............................................................................................................102
PULSE-WIDTH-MODULATED (PWM) OUTPUTS.................................................................105
14.1
PWM Features............................................................................................................105
14.2
PWM Control Registers .............................................................................................. 106
14.3
PWM Pin Structures ...................................................................................................108
14.4
Complementary PWM with Dead-time and Override functions.................................. 111
14.5
Dead-Time Insertion ................................................................................................... 112
14.6
PWM Output Override ................................................................................................113
14.7
Edge Aligned PWM (up-counter)................................................................................116
14.8
Center Aligned PWM (up/down counter).................................................................... 119
14.9
Single Shot (Up-Counter) ........................................................................................... 121
14.10
Smart Fault Detector ..............................................................................................124
14.11
PWM Power-down/Wakeup Procedures................................................................ 126
MOTION FEEDBACK MODULE.............................................................................................128
15.1
Input Capture Module (IC)..........................................................................................128
15.1.1
Compare Mode...........................................................................................................136
15.1.2
Reload Mode..............................................................................................................136
15.2
Quadrature Encoder Interface (QEI) ..........................................................................136
15.2.1
Free-counting mode ...................................................................................................138
15.2.2
Compare-counting mode............................................................................................138
15.2.3
X2/X4 Counting modes...............................................................................................138
15.2.4
Direction of Count.......................................................................................................138
15.2.5
Up-Counting ...............................................................................................................140
15.2.6
Down-Counting...........................................................................................................140
SERIAL PORT ........................................................................................................................ 141
16.1
Mode 0........................................................................................................................141
16.2
Mode 1........................................................................................................................142
16.3
Mode 2........................................................................................................................143
16.4
Mode 3........................................................................................................................144
16.5
Framing Error Detection ............................................................................................. 144
16.6
Multiprocessor Communications................................................................................. 145
I2C SERIAL PORTS ...............................................................................................................146
17.1
SIO Port......................................................................................................................146
17.2
The I2C Control Registers..........................................................................................146
17.2.1
Slave Address Registers, I2ADDR.............................................................................147
17.2.2
Data Register, I2DAT .................................................................................................147
17.2.3
Control Register, I2CON.............................................................................................147
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