TMS320F28027_16 Datasheet, PDF (14/138 Pages) Texas Instruments – Piccolo Microcontrollers

TMS320F28027, TMS320F28026, TMS320F28023, TMS320F28022
TMS320F28021, TMS320F28020, TMS320F280200
SPRS523K – NOVEMBER 2008 – REVISED JUNE 2016
www.ti.com
TERMINAL
NAME
PT
PIN #
GPIO4
EPWM3A
39
–
–
GPIO5
EPWM3B
40
–
ECAP1
GPIO6
EPWM4A
41
EPWMSYNCI
EPWMSYNCO
GPIO7
EPWM4B
42
SCIRXDA
–
GPIO12
TZ1
47
SCITXDA
–
GPIO16
SPISIMOA
27
–
TZ2
GPIO17
SPISOMIA
26
–
TZ3
GPIO18
SPICLKA
SCITXDA
XCLKOUT
24
GPIO19
XCLKIN
25
SPISTEA
SCIRXDA
ECAP1
GPIO28
SCIRXDA
48
SDAA
TZ2
Table 4-1. Signal Descriptions⁽¹⁾ (continued)
DA
PIN #
7
8
9
10
13
35
34
32
33
14
I/O/Z
DESCRIPTION
I/O/Z
O
I/O/Z
O
I/O
I/O/Z
O
I
O
I/O/Z
O
I
I/O/Z
I
O
I/O/Z
I/O
I
I/O/Z
I/O
I
I/O/Z
I/O
O
O/Z
I/O/Z
I
I/O
I
I/O
I/O/Z
I
I/OD
I
General-purpose input/output 4
Enhanced PWM3 output A and HRPWM channel
–
–
General-purpose input/output 5
Enhanced PWM3 output B
–
Enhanced Capture input/output 1
General-purpose input/output 6
Enhanced PWM4 output A and HRPWM channel
External ePWM sync pulse input
External ePWM sync pulse output
General-purpose input/output 7
Enhanced PWM4 output B
SCI-A receive data
–
General-purpose input/output 12
Trip Zone input 1
SCI-A transmit data
–
General-purpose input/output 16
SPI slave in, master out
–
Trip Zone input 2
General-purpose input/output 17
SPI-A slave out, master in
–
Trip zone input 3
General-purpose input/output 18
SPI-A clock input/output
SCI-A transmit
Output clock derived from SYSCLKOUT. XCLKOUT is either the same frequency,
one-half the frequency, or one-fourth the frequency of SYSCLKOUT. This is controlled
by bits 1:0 (XCLKOUTDIV) in the XCLK register. At reset, XCLKOUT =
SYSCLKOUT/4. The XCLKOUT signal can be turned off by setting XCLKOUTDIV
to 3. The mux control for GPIO18 must also be set to XCLKOUT for this signal to
propogate to the pin.
General-purpose input/output 19
External Oscillator Input. The path from this pin to the clock block is not gated by the
mux function of this pin. Care must be taken not to enable this path for clocking if it is
being used for the other periperhal functions
SPI-A slave transmit enable input/output
SCI-A receive
Enhanced Capture input/output 1
General-purpose input/output 28
SCI receive data
I2C data open-drain bidirectional port
Trip zone input 2
14
Terminal Configuration and Functions
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