
SNAD01B
8-CHANNEL 8-BIT ADC
======== CONTENTS ========
GENERAL DESCRIPTION.......................................................................................................................................3
1.
2.
FEATURES....................................................................................................................................................................3
3.
APPLICATIONS..........................................................................................................................................................3
4.
BLOCK DIAGRAM.....................................................................................................................................................4
5.
PIN ASSIGNMENT......................................................................................................................................................4
6.
FUNCTIONAL DESCRIPTIONS.............................................................................................................................5
I
NTERFACE
F
ORMAT
.............................................................................................................................................................5
C
HANNEL
S
ETTING
...............................................................................................................................................................7
C
ONTROL
R
EGISTER
S
ETTING
..............................................................................................................................................7
ADC R
EAD
T
IMING
..............................................................................................................................................................8
T
IMING OF
D
IGITAL
I
NPUT
R
EADING
...................................................................................................................................9
P
OWER
D
OWN
& C
HANNEL
W
AKE
-U
P
.............................................................................................................................10
B
ANDGAP REFERENCE
........................................................................................................................................................11
I
NPUT
C
HANNEL
PAD (C
HANNEL
0~6)............................................................................................................................12
B
ATTERY
M
ONITORING
(C
HANNEL
7
ONLY
)....................................................................................................................13
7.
ELECTRICAL CHARACTERISTICS..................................................................................................................14
8.
APPLICATION CIRCUITS.....................................................................................................................................15
E
XAMPLE
C
IRCUIT
: SNAD01B
WORKS WITH
S
ONIX
4-
BIT
S
ERIES
C
ONTROLLER
..........................................................15
9.
EXAMPLE PROGRAMS:........................................................................................................................................16
P
ROGRAM
1: S
ET
C
ONFIGURATION OF
SNAD01B..........................................................................................................27
P
ROGRAM
2: R
EAD
ADC
RESULT FROM
C
HANNEL
1......................................................................................................27
P
ROGRAM
3: R
EAD
D
IGITAL
I
NPUT DATA FROM
C
H
4, C
H
3, CH2..................................................................................28
P
ROGRAM
4: P
OWER
-
DOWN
SNAD01B
AND
H
OST
,
AND
W
AKE
-
UP
..............................................................................28
P
ROGRAM
5: B
ATTERY
L
OW
D
ETECTION
.........................................................................................................................29
10.
PAD DIAGRAM...................................................................................................................................30
Version: 1.3
July 31, 2003
1