Filter
Top Products
6-3
ANALOG-TO-DIGITAL (A/D) CONVERTER
AD_RESULT (Read)
Address:
Reset State:
1FAAH
7F80H
The A/D result (AD_RESULT) register consists of two bytes. The high byte contains the eight most-
significant bits from the A/D converter. The low byte contains the two least-significant bits from a ten-
bit A/D conversion, indicates the A/D channel number that was used for the conversion, and indicates
whether a conversion is currently in progress.
15 8
ADRLT9 ADRLT8 ADRLT7 ADRLT6 ADRLT5 ADRLT4 ADRLT3 ADRLT2
7 0
ADRLT1 ADRLT0 — — STATUS ACH2 ACH1 ACH0
Bit
Number
Bit
Mnemonic
Function
15:6 ADRLT9:0 A/D Result
These bits contain the A/D conversion result.
5:4 — Reserved. These bits are undefined.
3 STATUS A/D Status
Indicates the status of the A/D converter. Up to 8 state times are required
to set this bit following a start command. When testing this bit, wait at
least the 8 state times.
0 = A/D is idle
1 = A/D conversion is in progress
2:0 ACH2:0 A/D Channel Number
These bits indicate the A/D channel number that was used for the
conversion. The 87C196CB has eight A/D channel inputs, numbered
0–7
Figure 6-2. A/D Result (AD_RESULT) Register — Read Format