Specifications

Product Technical Specification & Customer Design Guidelines
30 Proprietary and Confidential - Contents subject to change 4114634
Power supply
The host provides power to the MC7304 through multiple power and ground pins
as summarized in Ta bl e 3 - 2.
The host must provide safe and continuous power at all times; the module does
not have an independent power supply, or protection circuits to guard against
electrical issues.
USB interface
Note: USB signals support
is required.
The USB interface is the path for communication between the host and module.
The interface complies with the [10] Universal Serial Bus Specification, Rev 2.0,
and the host device must be designed to the same standard. (When designing
the host device, careful PCB layout practices must be followed.)
USB interface features include:
• Data rate: Full-speed (12 Mbps)/High-speed (480 Mbps)
• Module enumeration:
· Windows: Modem or COM ports, using host Windows drivers
· Linux: /dev/ttyUSBn devices for Linux systems with the Sierra Wireless
driver installed
• USB-compliant transceivers
• Selective suspend mode
• Resumption initiated by host or module
Table 3-2: Power and ground specifications
Name Pins Specification Min Typ Max Units
VCC 2, 24, 39, 41, 52 Voltage range See Table 3-1 on page 26.
Ripple voltage - - 100 mV
pp
GND 4, 9, 15, 18, 21, 26,
27, 29, 34, 35, 37,
40, 43, 50
- - 0 - V
Table 3-3: USB interface
Name Pin Description
USB_D- 36 USB data negative
USB_D+ 38 USB data positive