MAX11802EWC+T Maxim Integrated Products, MAX11802EWC+T Datasheet - Page 50

IC TOUCH SCREEN CTLR 12-WLP

MAX11802EWC+T

Manufacturer Part Number
MAX11802EWC+T
Description
IC TOUCH SCREEN CTLR 12-WLP
Manufacturer
Maxim Integrated Products
Type
Resistiver
Datasheet

Specifications of MAX11802EWC+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 ~ 85°C
Mounting Type
Surface Mount
Package / Case
12-WLP
Voltage Supply Source
Single Supply
Sampling Rate (per Second)
105k
Resolution
11 bits
Interface Type
I2C, SPI
Supply Voltage (max)
3.6 V
Supply Voltage (min)
1.7 V
Conversion Rate
34.4 KSPs
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
MAX11802EWC+T
MAX11802EWC+TTR
Low-Power, Ultra-Small Resistive Touch-Screen
Controllers with I
General Configuration Register (0x01)
Measurement Resolution Configuration Register (0x02)
50
BIT
NAME
DEFAULT
BIT
NAME
DEFAULT
______________________________________________________________________________________
BIT
BIT
1:0
3:0
7
6
5
4
3
2
4
PWR_SAV
EDGE_TIME[1:0]
RT_SEL
NAME
RES_
MASK_IRQ
EDGE_IRQ
HOLD_DO
ODN_IRQ
7
1
PU_IRQ
7
0
RT_SEL
NAME
0: Internal ADC runs at normal power
1: Internal ADC runs at reduced power and resolution
This mode does limit the effective ADC resolution:
12-bit conversions can be reduced to 10-bit accuracy
8-bit conversions should not be impacted
Resolution for X, Y, Z1, or Z2 measurements
0: 12-bit conversion (see the PWR_SAV description in this table)
1: 8-bit conversion
HOLD_DO
6
1
6
0
0: 50k touch-detection pullup resistance
1: 100k touch-detection pullup resistance
(panel setting—not to be confused with internal
0: DOUT internal bus holder disabled
1: DOUT internal bus holder enabled
(applicable to SPI version only)
0: Disable IRQ internal pullup resistance
1: Enable IRQ internal pullup resistance
(open-drain mode only: ODN_IRQ also high)
0:
1:
0: Enable
1: Mask/disable
0: Use continuous interrupt with direct conversion mode
1: Use edge interrupt with direct conversion mode
00: 4 x (2MHz oscillator clock period) = 2μs
01: 16 x (2MHz oscillator clock period) = 8μs
10: 64 x (2MHz oscillator clock period) = 32μs
11: 128 x (2MHz oscillator clock period) = 128μs
low time for edge interrupt mode only
is CMOS buffered output
is open-drain nMOS output
PU_IRQ
2
5
1
C/SPI Interface
5
0
output
DESCRIPTION
output (force high or high-z)
DESCRIPTION
PWR_SAV
ODN_IRQ
4
1
4
0
MASK_IRQ
RESX
3
0
3
0
EDGE_IRQ
pullup)
RESY
2
0
2
0
MAX11800/
MAX11801
MAX11800/
MAX11801
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
RESZ1
EDGE_TIME[1:0]
1
0
1
0
MAX11802/
MAX11803
MAX11802/
MAX11803
RESZ2
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
0
0
0
0

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