
MCP3204/3208
DS21298B-page 4
Preliminary
1999 Microchip Technology Inc.
FIGURE 1-1:
Serial Interface Timing.
FIGURE 1-2:
Test Circuits.
CS
CLK
D
IN
MSB IN
t
SU
t
HD
t
SUCS
t
CSH
t
HI
t
LO
D
OUT
t
EN
t
DO
t
R
t
F
LSB
MSB OUT
t
DIS
NULL BIT
90%
10%
*
Waveform 1 is for an output with internal condi-
tions such that the output is high, unless dis-
abled by the output control.
Waveform 2 is for an output with internal condi-
tions such that the output is low, unless disabled
by the output control.
Test Point
1.4V
D
OUT
Load circuit for t
R
, t
F
,
t
DO
3K
C
L
= 100pF
Test Point
D
OUT
Load circuit for
t
DIS
and t
EN
3K
100pF
t
DIS
Waveform 2
t
DIS
Waveform 1
CS
CLK
D
OUT
t
EN
1
2
B11
Voltage Waveforms for t
EN
t
EN
Waveform
V
DD
V
DD
/2
V
SS
3
4
D
OUT
t
R
Voltage Waveforms for t
R
, t
F
CLK
D
OUT
t
DO
Voltage Waveforms for t
DO
t
F
V
OH
OL
Voltage Waveforms for t
DIS
D
OUT
D
CS
V
IH
T
DIS
Waveform 1*
Waveform 2