MC13191 View Datasheet(PDF) - Freescale Semiconductor

Part Name

Description

Manufacturer

MC13191

2.4 GHz ISM Band Low Power Transceiver

Freescale Semiconductor 

Table 8. Pin Function Description (continued)

Pin # Pin Name

Type

Description

Functionality

27 XTAL2 Input/Output

Crystal Reference oscillator output

Note: Do not load this pin by using it as a 16 MHz source.

Measure 16 MHz output at Pin 15, CLKO, programmed

for 16 MHz. See the MC13191 Reference Manual for

details.

Connect to 16 MHz

crystal and load

capacitor.

28 VDDLO2 Power Input

LO2 VDD supply. Connect to VDDA externally.

29 VDDLO1 Power Input

LO1 VDD supply. Connect to VDDA externally.

30 VDDVCO Power Output

VCO regulated supply bypass.

Decouple to ground.

31 VBATT Power Input

Analog voltage regulators Input. Connect to Battery.

Decouple to ground.

32 VDDA

Power Output

Analog regulated supply Output. Connect to directly VDDLO1

and VDDLO2 externally and to PAO± through a frequency

trap.

Note: Do not use this pin to supply circuitry external to the

chip.

Decouple to ground.

EP Ground

External paddle / flag ground.

Connect to ground.

1 The transceiver GPIO pins default to inputs at reset. There are no programmable pullups on these pins. Unused GPIO pins

should be tied to ground if left as inputs, or if left unconnected, they should be programmed as outputs set to the low state.

2 During low power modes, input must remain driven by MCU.

3 By default MISO is tri-stated when CE is negated. For low power operation, miso_hiz_en (Bit 11, Register 07) should be set to

zero so that MISO is driven low when CE is negated.

MC13191 Technical Data, Rev. 1.6

14

Freescale Semiconductor

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