TMS320F28027 Datasheet, PDF (47/130 Pages) Texas Instruments – Piccolo Microcontrollers

TMS320F28027, TMS320F28026, TMS320F28023, TMS320F28022
TMS320F28021, TMS320F28020, TMS320F280200
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4 Peripherals
SPRS523F – NOVEMBER 2008 – REVISED DECEMBER 2010
4.1 Analog Block
A 12-bit ADC core is implemented that has different timings than the 12-bit ADC used on F280x/F2833x.
The ADC wrapper is modified to incorporate the new timings and also other enhancements to improve the
timing control of start of conversions. Figure 4-1 shows the interaction of the analog module with the rest
of the F2802x system.
38-Pin 48-Pin
VDDA VDDA
VREFLO VREFLO
Tied To Tied To
VSSA VSSA
VREFHI VREFHI
Tied To Tied To
A0
A0
A1
A2
A2
A3
A4
A4
A6
A6
A7
B1
B2
B2
B3
B4
B4
B6
B6
B7
Signal Pinout
(3.3 V) VDDA
(Agnd) VSSA
VREFLO
VREFHI
A0
B0
A1
B1
A2
B2
A3
B3
A4
B4
B5
A5
A6
B6
A7
B7
Interface Reference
Diff
AIO2
AIO10
10-Bit
DAC
Comp1
COMP1OUT
AIO4
AIO12
10-Bit
DAC
Comp2
COMP2OUT
(See Note A)
AIO6
AIO14
Temperature Sensor
A. Comparator 2 is only available on the 48-pin PT package.
Figure 4-1. Analog Pin Configurations
ADC
Copyright © 2008–2010, Texas Instruments Incorporated
Peripherals
47
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