Intel 87C196CB Manual De Usuario
6-1
CHAPTER 6
ANALOG-TO-DIGITAL (A/D) CONVERTER
6.1
ADDITIONAL A/D INPUT CHANNELS
The 87C196CB’s A/D converter is functionally identical to that of the 8XC196NT, but it has
eight analog input channels instead of four. Table 6-1 lists the A/D signals. Figure 6-1 describes
the command register and Figure 6-2 describes the result register.
eight analog input channels instead of four. Table 6-1 lists the A/D signals. Figure 6-1 describes
the command register and Figure 6-2 describes the result register.
Table 6-1. A/D Converter Pins
Port Pin
A/D Signal
A/D Signal
Type
Description
P0.7:0
ACH7:0
I
Analog inputs. See the “Voltage on Analog Input Pin”
specification in the datasheet.
specification in the datasheet.
—
ANGND
GND
Reference Ground
Must be connected for A/D converter and port operation.
—
V
REF
PWR
Reference
Voltage
Must be connected for A/D converter and port operation.