56F8345 datasheet(33/164 Pages) FREESCALE

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Signal Pins

56F8345 Technical Data, Rev. 17

Freescale Semiconductor

Preliminary

ANA4

Input

Analog

Input

ANA4 - 7 — Analog inputs to ADC A, channel 1

ANA5

ANA6

ANA7

VREFH

Input

Analog

Input

VREFH — Analog Reference Voltage High. VREFH must be less

than or equal to VDDA_ADC.

VREFP

Input/

Output

Analog

Input/

Output

VREFP, VREFMID & VREFN — Internal pins for voltage reference

which are brought off-chip so that they can be bypassed.

Connect to a 0.1

μF low ESR capacitor.

VREFMID

VREFN

VREFLO

Input

Analog

Input

VREFLO — Analog Reference Voltage Low. This should normally

be connected to a low-noise VSSA.

ANB0

Input

Analog

Input

ANB0 - 3 — Analog inputs to ADC B, channel 0

ANB1

ANB2

ANB3

ANB4

100

Input

Analog

Input

ANB4 - 7 — Analog inputs to ADC B, channel 1

ANB5

101

ANB6

102

ANB7

103

TEMP_

SENSE

Output

Analog

Output

Temperature Sense Diode — This signal connects to an

on-chip diode that can be connected to one of the ADC inputs

and is used to monitor the temperature of the die. Must be

bypassed with a 0.01

μF capacitor.

CAN_RX

121

Schmitt

Input

Input,

pull-up

enabled

FlexCAN Receive Data — This is the CAN input. This pin has

an internal pull-up resistor.

To deactivate the internal pull-up resistor, set the CAN bit in the

SIM_PUDR register.

Table 2-2 Signal and Package Information for the 128-Pin LQFP

Signal

Name

Pin No.

Type

State

During

Reset

Signal Description

56F8345 Datasheet(PDF) 33 Page - Freescale Semiconductor, Inc

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