TMS320F28335, TMS320F28334, TMS320F28332
TMS320F28235, TMS320F28234, TMS320F28232
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SPRS439I–JUNE 2007–REVISED MARCH 2011
4.3
4.4
4.5
Enhanced PWM Modules (ePWM1/2/3/4/5/6 ) ........................................................................ 69
High-Resolution PWM (HRPWM) ....................................................................................... 73
Enhanced CAP Modules (eCAP1/2/3/4/5/6) ........................................................................... 74
4.6
4.7
Enhanced QEP Modules (eQEP1/2 ) ................................................................................... 76
Analog-to-Digital Converter (ADC) Module ............................................................................ 78
4.7.1
4.7.2
4.7.3
ADC Connections if the ADC Is Not Used .................................................................. 82
ADC Registers .................................................................................................. 83
ADC Calibration ................................................................................................. 84
4.8
4.9
Multichannel Buffered Serial Port (McBSP) Module .................................................................. 84
Enhanced Controller Area Network (eCAN) Modules (eCAN-A and eCAN-B) .................................... 87
4.10 Serial Communications Interface (SCI) Modules (SCI-A, SCI-B, SCI-C) .......................................... 92
4.11 Serial Peripheral Interface (SPI) Module (SPI-A ) ..................................................................... 96
4.12 Inter-Integrated Circuit (I2C) ............................................................................................. 99
4.13 GPIO MUX ................................................................................................................ 100
4.14 External Interface (XINTF) .............................................................................................. 107
5
6
Device Support ................................................................................................................ 109
5.1
5.2
5.3
Device and Development Support Tool Nomenclature ............................................................. 109
Documentation Support ................................................................................................. 111
Community Resources .................................................................................................. 116
Electrical Specifications ................................................................................................... 117
6.1
Absolute Maximum Ratings ............................................................................................. 117
Recommended Operating Conditions ................................................................................. 118
6.2
6.3
6.4
Electrical Characteristics ................................................................................................ 118
Current Consumption .................................................................................................... 119
6.4.1
6.4.2
6.4.3
Reducing Current Consumption ............................................................................. 121
Current Consumption Graphs ............................................................................... 122
Thermal Design Considerations ............................................................................. 123
6.5
6.6
Emulator Connection Without Signal Buffering for the DSP ....................................................... 124
Timing Parameter Symbology .......................................................................................... 125
6.6.1
6.6.2
6.6.3
General Notes on Timing Parameters ...................................................................... 125
Test Load Circuit .............................................................................................. 125
Device Clock Table ........................................................................................... 126
6.7
6.8
Clock Requirements and Characteristics ............................................................................. 127
Power Sequencing ....................................................................................................... 128
6.8.1
Power Management and Supervisory Circuit Solutions .................................................. 128
6.9
General-Purpose Input/Output (GPIO) ................................................................................ 131
6.9.1
6.9.2
6.9.3
6.9.4
GPIO - Output Timing ........................................................................................ 131
GPIO - Input Timing .......................................................................................... 132
Sampling Window Width for Input Signals ................................................................. 133
Low-Power Mode Wakeup Timing .......................................................................... 134
6.10 Enhanced Control Peripherals ......................................................................................... 139
6.10.1 Enhanced Pulse Width Modulator (ePWM) Timing ....................................................... 139
6.10.2 Trip-Zone Input Timing ....................................................................................... 139
6.10.3 Enhanced Capture (eCAP) Timing ......................................................................... 140
6.10.4 Enhanced Quadrature Encoder Pulse (eQEP) Timing ................................................... 140
6.10.5 ADC Start-of-Conversion Timing ............................................................................ 141
6.11 External Interrupt Timing ................................................................................................ 141
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