MC13201 Technical Data, Rev. 1.1,

16

Freescale Semiconductor

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 MC13201

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 bias network.

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.

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

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

Table 8. Pin Function Description (continued)

Pin #

Pin Name

Type

Description

Functionality