MAX11800GTC/V+T Maxim Integrated Products, MAX11800GTC/V+T Datasheet - Page 48

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MAX11800GTC/V+T

Manufacturer Part Number
MAX11800GTC/V+T
Description
IC TOUCH SCREEN CTRLR LP 12WQFN
Manufacturer
Maxim Integrated Products
Type
Resistiver
Datasheet

Specifications of MAX11800GTC/V+T

Touch Panel Interface
4-Wire
Number Of Inputs/keys
1 TSC
Resolution (bits)
12 b
Data Interface
Serial, SPI™
Data Rate/sampling Rate (sps, Bps)
105k
Voltage - Supply
1.7 V ~ 3.6 V
Operating Temperature
-40°C ~ 105°C
Mounting Type
Surface Mount
Package / Case
12-WQFN Exposed Pad
Voltage Supply Source
Single Supply
Sampling Rate (per Second)
105k
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Low-Power, Ultra-Small Resistive Touch-Screen
Controllers with I
TSC conversion commands are only to be used in
direct conversion mode (AUTO = 0). Conversion com-
mands issued during autonomous mode are ignored.
All panel setup and measurement operations are auto-
mated when in autonomous mode (AUTO = 1).
Commands must be issued in write mode to be execut-
ed. There are two types of commands: panel setup reg-
isters (0x6x) and measurement/conversion registers
(0x7x). All measurement commands indicate that the
ADC is used and the ADC can begin to power up once
the 0x7x header has been recognized. All measure-
ment commands modify the target data register upon
the conclusion of the measurement command. The
Table 20. Conversion Command Summary
Note 1: Both SPI and I
Table 20 (e.g., to access register 50h use the command byte construction {101_0000_X}, where X is a don't care).
Note 2: R0 bit is forced to 1 for panel setup commands, and forced to 0 for combined and AUX commands. For measurement com-
mands it is user selectable. CONT = 0 means perform a measurement without continuation, while CONT = 1 means perform a mea-
surement with continuation. Continuation mode maintains the present panel setup conditions after the conclusion of the
measurement, and can be useful when performing multiple measurements of the same type.
48
(NOTE 1)
60h–67h
HEX
6Bh
6Dh
7Ah
7Bh
7Ch
7Dh
69h
6Fh
70h
72h
74h
76h
78h
79h
7Eh
7Fh
______________________________________________________________________________________
CONT = 0
CONT = 1
CONT = 0
CONT = 1
CONT = 0
CONT = 1
CONT = 0
CONT = 1
(NOTE 2)
(CONT)
R0
(1)
(1)
(1)
(1)
(0)
(0)
(0)
(0)
X
2
C interfaces use a 7-bit register address format. I
Measurement Commands
ACCESS
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
PAIRABLE
Panel Setup and
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
2
C/SPI Interface
COMMAND
LENGTH
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
MAX11800/
MAX11801
CONT bit impacts the setup of the panel and ADC fol-
lowing the command. For panel setup commands and
combined commands, the user setting of this bit (R0) is
ignored. For these commands, the internal assumption
is shown in parentheses in Table 22.
The CONT bit impacts the setup of the panel and/or ADC
following the command (see command descriptions for
details). For some commands, the user setting of this bit
(R0) is ignored; for these commands the internal
assumption is shown in parentheses in Tables 8 and 22.
By definition, panel setup and measurement com-
mands are NOT pairable in write mode as each com-
mand modifies the panel setting both during the
command and after it (based on conversion executions
and CONT bit settings).
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
2
C interfaces should left-justify the 7-bit addresses given in
MAX11802/
MAX11803
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Reserved
X panel setup
Y panel setup
Z1 panel setup
Z2 panel setup
X, Y combined command
X, Y, Z1 combined command
X, Y, Z1, Z2 Combined command
AUX conversion
X measurement
X measurement
Y measurement
Y measurement
Z1 measurement
Z1 measurement
Z2 measurement
Z2 measurement
FUNCTION

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