13892 datasheet(42/75 Pages) FREESCALE

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Analog Integrated Circuit Device Data

Freescale Semiconductor

13892

FUNCTIONAL DESCRIPTION

FUNCTIONAL PIN DESCRIPTION

Because of an order from the United States International Trade Commission, BGA-packaged product lines and part numbers indicated here currently are not

available from Freescale for import or sale in the United States prior to September 2010: MC13892VK and MC13892VL in 139, 186 MAPBGA packages.

VGEN1

Output of general purpose 1 regulator.

VGEN2DRV

Drive output for the VGEN2 external PNP transistor.

VGEN2

Output of general purpose 2 regulator.

VINGEN3DRV

1. Input for the VGEN3 regulator when no external PNP

transistor used. Typically connected to BP.

2. Drive output for VGEN3 in case an external PNP

transistor is used on the application. In this case, this pin

must be connected the base of the PNP transistor.

VGEN3

Output of general purpose 3 regulator.

VSRTC

Output regulator for the SRTC module on the processor.

The VSRTC regulator provides the CLK32KMCU output level

(1.2 V). Additionally, it is used to bias the Low Power SRTC

domain of the SRTC module integrated on certain FSL

processors.

GNDREG1

Ground for regulators 1.

GNDREG2

Ground for regulators 2.

GNDREG3

Ground for regulators 3.

GPO1

General purpose output 1. Intended to be used for battery

thermistor biasing. In this case, connect a 10 K

Ω resistor

from GPO1 to ADIN5, and one from ADIN5 to GND.

GPO2

General purpose output 2.

GPO3

General purpose output 3.

GPO4

General purpose output 4. It can be configured for a

muxed connection into Channel 7 of the GP ADC.

CONTROL LOGIC

LICELL

Coin cell supply input and charger output. The LICELL pin

provides a connection for a coin cell backup battery or

supercap. If the main battery is deeply discharged, removed,

or contact-bounced (i.e., during a power cut), the RTC

system and coin cell maintained logic will switch over to the

LICELL for backup power. This pin also works as a current-

limited voltage source for battery charging. A small capacitor

should be placed from LICELL to ground under all

circumstances.

XTAL1

32.768 kHz Oscillator crystal connection 1.

XTAL2

32.768 kHz Oscillator crystal connection 2.

GNDRTC

Ground for the RTC block.

CLK32K

32 kHz Clock output for peripherals. At system start-up,

the 32 kHz clock is driven to CLK32K (provided as a

peripheral clock reference), which is referenced to SPIVCC.

The CLK32K is restricted to state machine activation in

normal on mode.

CLK32KMCU

32 kHz Clock output for processor. At system start-up, the

32 kHz clock is driven to CLK32KMCU (intended as the CKIL

input to the system processor) referenced to VSRTC. The

driver is enabled by the start-up sequencer and the

CLK32KMCU is programmable for Low Power Off mode

control by the state machine.

RESETB AND RESETBMCU

Reset output for peripherals and processor respectively.

These depend on the Power Control Modes of operation (See

Functional Device Operation on page 48). These are meant

as reset for the processor, or peripherals in a power up

condition, or to keep one in reset while the other is up and

running.

13892 Datasheet(PDF) 42 Page - Freescale Semiconductor, Inc

13892 Datasheet(HTML) 42 Page - Freescale Semiconductor, Inc

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