User`s guide

Analog Inputs (ADC) LZ87010 Advance User’s Guide
13-2 1/15/03
13.2 Signals
Table 13-1 details the ADC Signals.
Figure 13-1. ADC Block Diagram
LZ87010-85
AN[7]
MUX
7
6
5
4
3
2
1
0
SEL
ADCDL
ADCC.PWEN
ADCC.STATUS IE1.EADCADCDH
ADCC.START
ADCC.SEL
8
3
4
AN[6]
AN[5]
AN[4]ANALOG
INPUTS
AN[3]
AN[2]
AN[1]
AN[0]
TO INTERRUPT
CONTROLLER
INTERNAL TO
THE LZ87010
EXTERNAL TO
THE LZ87010
AIN
nPD
DONE
CLK
ADCCLK
ADC[11:4]
DIGITAL OUTPUT
12-BIT
ADC
START
ADC[3:0]
4
0b0000
Table 13-1. ADC Signal Descriptions
SIGNAL
NAME
SIGNAL
TYPE
PIN
NUMBER
PIN
TYPE
FUNCTIONAL
UNIT
SHARED
WITH
DESCRIPTION
ADVREF I 50 I ADC
Analog input. Voltage Reference
for Analog-to-Digital Converter.
This pin sets the upper limit of the
voltage conversion range. See the
DC Specifications for the maximum
and minimum ADVREF voltages.
AN[7:0] I 58:51 I ADC Analog Input Ports