MCP19124 datasheet(65/236 Pages) MICROCHIP

65 / 236 page

 2016 Microchip Technology Inc.

DS20005619A-page 65

MCP19124/5

9.9

Calibration Word 9

Calibration Word 9 is at memory location 2088h and

contains the calibration bits for the OVREF DAC span

trim OVRSPCAL<4:0> and the Current Sense Amplifier

Gain Calibration A2GCAL<3:0>. The OVRSPCAL<4:0>

is an individual adjustment specific to calibrating the

OVREF DAC span. Firmware must read these values

and copy into the OVRSPCAL Special Function

A2 Gain calibration trim bits set the 10V/V gain of the

current sense amplifier (A2). A2GCAL<3:0> calibration

bits values must be copied via firmware into the

A2GCAL Special Function Register located in Bank 3

at 19Eh.

CALWD9: CALIBRATION WORD 9 REGISTER

U-0

R/P-1

—

OVRSPCAL4 OVRSPCAL3 OVRSPCAL2

OVRSPCAL1

OVRSPCAL0

bit 13

bit 8

U-0

R/P-1

—

A2GCAL3

A2GCAL2

A2GCAL1

A2GCAL0

bit 7

bit 0

Legend:

R = Readable bit

P = Programmable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’

= Bit is set

‘0’

= Bit is cleared

x = Bit is unknown

bit 13

Unimplemented: Read as ‘0’

bit 12-8

OVRSPCAL<4:0>: OVREF Span Adjustment bits

bit 7-4

Unimplemented: Read as ‘0’

bit 3-0

A2GCAL<3:0>: A2 Current Sense Amplifier Gain Calibration bits

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