CC3100_15 Datasheet, PDF (5/44 Pages) Texas Instruments – CC3100 SimpleLink Wi-Fi Network Processor, Internet-of-Things Solution for MCU Applications

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CC3100
SWAS031D – JUNE 2013 – REVISED FEBRUARY 2015
3 Terminal Configuration and Functions
Figure 3-1 shows pin assignments for the 64-pin QFN package.
VDD_RAM 49
UART1_nRTS 50
RTC_XTAL_P 51
RTC_XTAL_N 52
NC 53
VIN_IO2 54
UART1_TX 55
VDD_DIG2 56
UART1_RX 57
TEST_58 58
TEST_59 59
TEST_60 60
UART1_nCTS 61
TEST_62 62
NC 63
NC 64
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
CC3100
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
32 nRESET
31 RF_BG
30 RESERVED
29 RESERVED
28 NC
27 NC
26 NC
25 LDO_IN2
24 VDD_PLL
23 WLAN_XTAL_P
22 WLAN_XTAL_N
21 SOP2/TCXO_EN
20 NC
19 RESERVED
18 NC
17 NC
Figure 3-1. QFN 64-Pin Assignments (Top View)
3.1 Pin Attributes
Table 3-1 describes the CC3100 pins.
NOTE
If an external device drives a positive voltage to signal pads when the CC3100 device is not
powered, DC current is drawn from the other device. If the drive strength of the external
device is adequate, an unintentional wakeup and boot of the CC3100 device can occur. To
prevent current draw, TI recommends one of the following:
• All devices interfaced to the CC3100 device must be powered from the same power rail
as the CC3100 device.
• Use level-shifters between the CC3100 device and any external devices fed from other
independent rails.
• The nRESET pin of the CC3100 device must be held low until the VBAT supply to the
device is driven and stable.
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Terminal Configuration and Functions
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