25-01-2013, 02:27 PM
Digital Signal Controllers (DSCs)
1Digital Signal.pdf (Size: 2.42 MB / Downloads: 29)
Introduction
The TMS320F28335, TMS320F28334, TMS320F28332, TMS320F28235, TMS320F28234, and
TMS320F28232 devices, members of the TMS320C28x™/ Delfino™ DSC/MCU generation, are highly
integrated, high-performance solutions for demanding control applications.
Throughout this document, the devices are abbreviated as F28335, F28334, F28332, F28235, F28234,
and F28232, respectively. Table 2-1 and Table 2-2 provide a summary of features for each device
Pin Assignments
The 176-pin PGF/PTP low-profile quad flatpack (LQFP) pin assignments are shown in Figure 2-1. The
179-ball ZHH ball grid array (BGA) terminal assignments are shown in Figure 2-2 through Figure 2-5. The
176-ball ZJZ plastic ball grid array (PBGA) terminal assignments are shown in Figure 2-6 through
Figure 2-9.Table 2-3 describes the function(s) of each pin.
Signal Descriptions
Table 2-3 describes the signals. The GPIO function (shown in Italics) is the default at reset. The peripheral
signals that are listed under them are alternate functions. Some peripheral functions may not be available
in all devices. See Table 2-1 and Table 2-2 for details. Inputs are not 5-V tolerant. All pins capable of
producing an XINTF output function have a drive strength of 8 mA (typical). This is true even if the pin is
not configured for XINTF functionality. All other pins have a drive strength of 4-mA drive typical (unless
otherwise indicated). All GPIO pins are I/O/Z and have an internal pullup, which can be selectively
enabled/disabled on a per-pin basis. This feature only applies to the GPIO pins. The pullups on
GPIO0–GPIO11 pins are not enabled at reset. The pullups on GPIO12–GPIO87 are enabled upon reset.