aduc7023bcpz62irl Analog Devices, Inc., aduc7023bcpz62irl Datasheet - Page 35

• Manufacturer Part Number: aduc7023bcpz62irl
• Description: Precision Analog Microcontroller, 12-bit Analog I/o, Arm7tdmi Mcu With Enhanced Irq Handler
• Manufacturer: Analog Devices, Inc.

REFCON Register
Name:
Address:
Default value:
Access:
Function:
REFCON
0xFFFF048C
0x00
Read/write
The band gap reference interface consists of
an 8-bit MMR REFCON described in Table 22.
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Table 22. REFCON MMR Bit Designations
Bit
7 to 2
1
0
To connect an external reference source to the ADuC7023,
configure REFCON = 0x00. ADC and the DACs can be
configured to use the same or different reference resource. See
Table 39.
Description
Reserved.
Internal reference power-down bit.
This bit is set to 1 to power down the internal
reference source. This bit should be set when
connecting an external reference source.
This bit is cleared to enable the internal reference.
This bit is cleared by default.
Internal reference output enable.
This bit is set by the user to connect the internal 2.5 V
reference to the V
for an external component but needs to be buffered.
This bit is cleared by the user to disconnect the
reference from the V
REF
pin. The reference can be used
REF
pin.
ADuC7023