SPRACK2A Application note

SPRACK2A September 2019 – March 2020 TMS320F280021 , TMS320F280021-Q1 , TMS320F280023 , TMS320F280023-Q1 , TMS320F280023C , TMS320F280025 , TMS320F280025-Q1 , TMS320F280025C , TMS320F280025C-Q1 , TMS320F280040-Q1 , TMS320F280040C-Q1 , TMS320F280041 , TMS320F280041-Q1 , TMS320F280041C , TMS320F280041C-Q1 , TMS320F280045 , TMS320F280048-Q1 , TMS320F280048C-Q1 , TMS320F280049 , TMS320F280049-Q1 , TMS320F280049C , TMS320F280049C-Q1

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3.4 Analog Module Differences

This section outlines the analog differences between F28002x and F28004x. The GPDAC and PGA are not present on the F28002x and the analog mux table is re-mapped.

Table 4. Analog Module Instances

Module	F28004x	F28002x
ADC⁽¹⁾	3 - ADCA, ADCB, ADCC	2 - ADCA, ADCC
GPDAC	2 - GPDACA, GPDACB	-
CMPSS⁽¹⁾	7 - CMPSS1 to CMPSS7	4 - CMPSS1 to CMPSS4
PGA	7 - PGA1 to PGA7	-
Temp Sensor	1 - (in ADCB ch 14)	1 - (in ADCC ch 12)

In porting software from F28004x to F28002x (or the other way around), care must be taken to ensure that the correct ADC channels are used because of a difference in channel assignment, see Section 3.10.