DSPIC33EP128GS708 datasheet(357/484 Pages) MICROCHIP

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DS70005258C-page 357

dsPIC33EPXXXGS70X/80X FAMILY

27.2

Device Calibration and

Identification

The PGAx and current source modules on the

dsPIC33EPXXXGS70X/80X family devices require

Calibration Data registers to improve performance of

the module over a wide operating range. These

Calibration registers are read-only and are stored in

configuration memory space. Prior to enabling the

module, the calibration data must be read (TBLPAG

and Table Read instruction) and loaded into its respec-

tive SFR registers. The device calibration addresses

are shown in Table 27-3.

The dsPIC33EPXXXGS70X/80X devices have two

Identification registers near the end of configuration

memory space that store the Device ID (DEVID) and

Device Revision (DEVREV). These registers are used

to determine the mask, variant and manufacturing

information about the device. These registers are

read-only and are shown in Register 27-1 and

TABLE 27-3:

DEVICE CALIBRATION ADDRESSES(1)

Calibration

Name

Address Bits 23-16 Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

PGA1CAL

800E48

—

PGA1 Calibration Data

PGA2CAL

800E4C

—

PGA2 Calibration Data

ISRCCAL

800E78

—

Current Source Calibration Data

Note 1:

The calibration data must be copied into its respective SFR registers prior to enabling the module.

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