User Manual
Table Of Contents
- About the ConnectCore® 6UL
- Module specifications
- Assembly instructions
- Moisture sensitivity and shelf life
- Mounting
- Solder paste print
- Stencil
- Coplanarity
- SMT pick and place
- SMT process parameter reference - for both castellation and LGA applications
- Reflow profiles using a ten-zone oven, SAC 305 lead-free solder paste (Alpha ...
- Vapor Phase Profile Recommendation Using IBL 309 Batch Soldering Machine, SAC...
- Vapor Phase IBL 309 batch soldering machine settings
- Conformal coating
- Certifications
About the ConnectCore® 6UL Serial downloader
ConnectCore® 6UL Hardware Reference Manual
17
Bootstrap configuration Corresponding GPIO Configuration
BOOT_CFG1[0] LCD_DATA0 0
BOOT_CFG1[1] LCD_DATA1 0
BOOT_CFG1[2] LCD_DATA2 0
BOOT_CFG1[3] LCD_DATA3 0
BOOT_CFG1[4] LCD_DATA4 1
BOOT_CFG1[5] LCD_DATA5 0
BOOT_CFG1[6] LCD_DATA6 0
BOOT_CFG1[7] LCD_DATA7 1
Digi recommends you use 10K pull-up and pull-down resistors to configure each line.
The BOOT_CFG1 and BOOT_CFG2 register lines are not dedicated lines of the CPU. This means that
the values of these lines are latched during the power-up, but have a different functionality once the
system is up and running. In this case, these lines belong to the LCD interface. In order to protect the
value of these registers while the system is booting, Digi recommends you use a protection circuitry
as shown in sheet 3 of 7, "Boot selection," of the ConnectCore 6UL reference designs. See
ConnectCore 6UL design files.
Serial downloader
You can use the serial downloader boot mode for device recovery. The serial downloader allows you to
download a program image to the chip through a USB or UART serial connection. When any of the
standard boot modes is selected but the booting process doesn’t succeed (for instance due to wrong
booting device or corrupted images) the CPU automatically jumps to the serial downloader boot
mode.
Wireless interfaces
The ConnectCore 6UL system-on-module combines a wireless local area network (WLAN) and
Bluetooth (BT) dual solution to support IEEE802.11 a/b/g/n/ac WLAN standards and BT 4.2 enabling
seamless integration of WLAN/BT and Low Energy technology. Digi also offers a non-wireless variant of
the ConnectCore 6UL module.
The following sections include specifications for the wireless interfaces available on the ConnectCore
6UL module.
WLAN 802.11a/b/g/n/ac
The 2.4 GHz band on the ConnectCore 6UL module supports 20/40 MHz bandwidths, and the 5 GHz
band supports 20/40/80 MHz bandwidths.
The following sections specify the performance of the WLAN IEEE 802.11a/b/g/n/ac interface on the
ConnectCore 6UL module.