Device Information Area (DIA)

The Device Information Area (DIA) is a dedicated region in the Program Flash Memory. The data is mapped from address 8100h to 813Fh. These locations are read-only and cannot be erased or modified. The DIA contains the Microchip Unique Identifier words, Temperature Indicator range data, and the Fixed Voltage Reference (FVR) voltage readings in millivolts (mV). The DIA Table holds the DIA information for the PIC16F171 family of microcontrollers.

Table 1. Device Information Area
Address Range Name of Region Standard Device Information
8100h - 8108h MUI0 Microchip Unique Identifier (9 Words)
MUI1
MUI2
MUI3
MUI4
MUI5
MUI6
MUI7
MUI8
8109h MUI9 Reserved (1 Word)
810Ah - 8111h EUI0 Optional External Unique Identifier (8 Words)
EUI1
EUI2
EUI3
EUI4
EUI5
EUI6
EUI7
8112h TSLR1(1) Gain = 0.1C×256count (low range setting)
8113h TSLR2(1) Temperature sensor ADC reading at 90°C (low range setting)
8114h TSLR3(1) Offset (low range setting)
8115h TSHR1(2) Gain = 0.1C×256count (high range setting)
8116h TSHR2(2) Temperature sensor ADC reading at 90°C (high range setting)
8117h TSHR3(2) Offset (high range setting)
8118h FVRA1X ADC FVR1 output voltage for 1x setting (in mV)
8119h FVRA2X ADC FVR1 output voltage for 2x setting (in mV)
811Ah FVRA4X ADC FVR1 output voltage for 4x setting (in mV)
811Bh FVRC1X Comparator FVR2 output voltage for 1x setting (in mV)
811Ch FVRC2X Comparator FVR2 output voltage for 2x setting (in mV)
811Dh FVRC4X Comparator FVR2 output voltage for 4x setting (in mV)
811Eh - 811Fh Reserved Reserved (2 Words)
Notes:
  1. 1.TSLR: Addresses 8112h - 8114h store the measurements for the low range setting of the temperature sensor at VDD = 3.0V, VREF+ = 2.048V from FVR1.
  2. 2.TSHR: Addresses 8115h - 8117h store the measurements for the high range setting of the temperature sensor at VDD = 3.0V, VREF+ = 2.048V from FVR1.