AccuTouch 2218 Combo (Dual Serial/USB) ControllerThe 2218 controller is RoHS Compliant, part # E329179.
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Supply Voltage and Current| MTBF Method and Temperature | Calculated MTBF |
|---|---|
| In the first year | |
| Telcordia SR-332, 25°C | 1,038,435 |
| Telcordia SR-332, 50°C | 659,520 |
| After the first year | |
| Telcordia SR-332, 25°C | 2,464,143 |
| Telcordia SR-332, 50°C | 853,910 |
Temperature
- Operating: 0°C to 65°C
- Storage: -40°C to 85°C
Humidity
- Operating: 10% to 90% RH, noncondensing
- Storage: 10% to 90% RH, noncondensing
Operating Altitude
- 10,000 feet
Shock and Vibration
- Three axis sine wave, 50Hz to 2kHz, 1G, 2 minutes/Octave with dwell on resonances
ESD
- Per EN 6100-4-2 1995: Level 4. Contact discharge 8kV, air discharge 15kV.
Flammability
- The printed circuit board substrate is rated 94V0. All plastic components, such as headers and connectors, are also rated 94V0.
Construction
- Four-layer surface-mount design with internal ground plane for EMI suppression
Dimensions
- Total width: 1.38 inches (35.00 mm)
- Total length: 2.36 inches (60.00 mm)
- Total height: 0.45 inches (11.30 mm)
- The mounting holes are plated through for chassis ground connection. Refer to the dimensional drawing under the Drawings tab.
The power/interface connector, P1, is a 1.25mm pitch 20 pin, top contact style connector, intended to be used with single wired pins in a 20 pin header. The pins are numbered as shown in Table 1. Matching header is MOLEX 51127-2005 housing or CS JS-2255-20-D1P, with MOLEX 50516-8041 terminals.
Table 1. Power/Interface Connector P1 Pin Numbers and Signal Names
| P1 Pin | Signal Name | Signal Function | P1 Pin | Signal Name | Signal Function |
|---|---|---|---|---|---|
| 1 | USB VCC | +5V Power | 2 | GND | Ground |
| 3 | D- | USB D- | 4 | D+ | USB D+ |
| 5 | +5 V | +5V Power | 6 | GND | Ground |
| 7 | SDA | 12C SDA | 8 | NC | No Connection |
| 9 | LED | LED Touch and System Health Status | 10 | NRST | Reset signal |
| 11 | HDCD | Serial Port | 12 | HDSR | Serial Port |
| 13 | HRxD | Serial Port | 14 | HRTS | Serial Port |
| 15 | HTxD | Serial Port | 16 | HCTS | Serial Port |
| 17 | HDTR | Serial Port | 18 | SCL | Serial Port |
| 19 | GRN | No Connection | 20 | NC | do not use |
Table 2. Serial Interface on Connector P1, Pins and Signal Names
| Signal Name | DB-9 Pin | P1 Pin | Sourced by | Signal Function |
|---|---|---|---|---|
| DCD | 1 | 11 | ctlr | "carrier detect", handshake = '0' (POSITIVE) when controller power on |
| DSR | 6 | 12 | ctlr | "data set ready", handshake = '0' (POSITIVE) when controller power on |
| NRxD | 2 | 13 | ctlr | serial data from controller to host |
| RTS | 7 | 14 | host | "request to send", handshake = '0' (POSITIVE) when controller may send |
| NTxD | 3 | 15 | host | serial data from host to controller |
| CTS | 8 | 16 | ctlr | used as "ready to receive", handshake = '0' (POSITIVE) when host may send |
| DTR | 4 | 17 | host | "data terminal ready", handshake = '0' (POSITIVE) when controller may send |
| RI | 9 | - | n/u | not used |
| SG | 5 | 19 | com | signal ground |
Signal electrical characteristics are given in Table 3. These specifications are extracted from references 2 and 3, and they comply to ANSI/EIA/TIA 232-F.
Table 3. Serial Signal and LED Electrical Characteristics
| Parameter | Value | Signals | EIA-232 Subsec. |
|---|---|---|---|
| Minimum ON state input volts 1 | +3 volts | NTxD, RTS, DTR | 2.1.3 |
| Minimum OFF state input volts 1 | -3 volts | NTxD, RTS, DTR | 2.1.3 |
| DC Load Resistance | 5 kΩ ± 2 kΩ | NTxD, DTR, RTS | 2.1.4 |
| Source Impedance (Power Off) | > 300 Ω | DSR, DCD,CTS, NRxD | 2.1.5 |
| Power-off condition interpretation | ON condition | RTS, DTR | 2.1.5 |
| Output Voltage, Open Circuit | 25 volts, max. 2 | NRxD, DSR, DCD, CTS | 2.1.6 |
| Output Voltage into test load 3 | >5, <15 volts 2 | NRxD, CTS, DSR, DCD | 2.1.6 |
| Short Circuit Current | <100 mA | NRxD, DSR, DCD, CTS | 2.1.6 |
| Transition Characteristics | per EIA-232-E 4 | NRxD, DSR, DCD, CTS | 2.1.7 |
| External LED short circuit current | 0.5mA nominal | LED | N/A |
1 Measured with respect to circuit AB, Signal Ground.
2 Absolute magnitude.
3 Output voltage measured over the entire range of test
load from 3000 ohms to 7000 ohms.
4 The transition characteristics comply with ANSI EIA/TIA-232-E
while the controller is powered on; during power up and power down
some of the criteria will not be met.
The AccuTouch touchscreen connector, P2, is a single row by five-position header with 0.025 inch square pins spaced on 0.100 centers. Connector P2 is a Molex 22-05-3051 and mates with the receptacle on the AccuTouch touchscreen cable. The pins are numbered as shown in Figure 1. The withdrawal force exceeds 2 lbs.
Figure 1. P2, AccuTouch Touchscreen Cable-Board Mounted Header and Cable-Mounted Plug
Table 4. Touchscreen Connector, P2, Pins and Signal Names
| P2 Pin | Signal Name | Signal Description |
|---|---|---|
| 1 | H | Drive signal attached to the touchscreen substrate upper right corner when viewed from a user's perspective |
| 2 | X | Drive signal attached to the substrate lower right corner |
| 3 | S | "Sense" signal attached to the touchscreen coversheet |
| 4 | Y | Drive signal attached to the substrate upper left corner |
| 5 | L | Drive signal attached to the substrate lower left corner |
The 2218 has no jumpers.
A green LED indicates controller status as below:
| LED Blink Rate | Function |
|---|---|
| Once per second | Normal condition, untouched state |
| On continuously | Touched state |
| Twice per second | Error detected |
- Elo controllers are "CNR/USR" UL Recognized Components for USA and Canada, Category NWGQ2, Information Technology Equipment Including Business Equipment.
- Elo controllers are TÜV Bauart certified as components.
- Elo controllers have been tested for compliance with FCC Part 15 Class B limits.
- Depending on the application, it may be necessary to pay special attention to system grounding and shielding, and it may be necessary to apply ferrite suppressor beads.
- Agency approval certificates for all Elo controllers and touchscreens (366K PDF)
- Look up product statement of compliance by part number
- Dimensional drawing: MS600954 Rev A (117K PDF)
- CAD drawings available upon request
- Serial cable: P/N D16890-000
- Dimensional drawing: MS600342 Rev A (46K PDF)
- USB cable: P/N D38640-000
- Dimensional drawing: MS500546 Rev A (110K PDF)
- Dual serial/USB cable: P/N D40022-000
- Dimensional drawing: MS500494 Rev B (111K PDF)