EV-GM-00-1.0 SkyeTek, EV-GM-00-1.0 Datasheet - Page 33

• Manufacturer Part Number: EV-GM-00-1.0
• Description: RF Development Tools Gemini Eval Kit ISO14443, ISO18094
• Manufacturer: SkyeTek
• Type: RF Readersr

Specifications of EV-GM-00-1.0

• Rohs: yes
• Product: Evaluation Kits
• Tool Is For Evaluation Of: ISO14443, ISO18092
• Frequency: 13.56 MHz
• Operating Supply Voltage: 5 V
• Description/function: Evaluation kit for SkyeModule Gemini NFC OEM reader module
• Interface Type: I2C, Serial, SPI, USB
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 20 C
• For Use With: ISO14443, ISO18092

Main 720.328.3425 Fax:[phone]
SkyeModule Gemini Datasheet
11.4 I
The SkyeModule Gemini supports can act as an I
on the SDA and SCL lines as shown in Figure 11-8: I
data ready signal to indicate that the current command is complete and data is available for the host.
The protocol for communicating via I







2
The I
is a bidirectional serial data line.
The data packet exchange between the host (I
SkyeTek Protocol v3 (Binary Mode only). See more about the protocol in section 13,
Communicating with the Module.
I
The data is sent and received MSB first.
Up to 5V logic levels are allowed. See logic levels in section 8.1, Electrical Characteristics.
The device uses a 7-bit address
The default address = 0x7F, but the address can be changed with the Reader ID system
parameter. See more about this system parameter in section 14.3.5, Reader ID.
C
2
C fast mode plus (1MHz), I
2
C interface uses a standard two-wire connection in which SCL is the master clock and SDA
SkyeModule Gemini
(Optional Data Ready)
J3 – Pin 14
J3 – Pin 12
GPIO3_DR
J3 – Pin 7
SDA
SCL
Figure 11-8: I
2
2
C is outlined below:
C fast mode (400 kHz), and 100kHz data rates are all supported.
2.2kΩ
2
C Connection Diagram
2
C slave device. External pull up resistors are required
Up to
+5V
2.2kΩ
2
C Connection Diagram. There is also an optional
2
C Master) and the Gemini (I
SDA
SCL
Data Ready
(Optional GPIO Input)
I
2
1525 Market St. Ste 200
C Master
2
Denver, CO 80202
www.skyetek.com
C Slave) uses
Skyetek Inc
Page
| 33