56F8335 datasheet(25/160 Pages) FREESCALE

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Signal Pins

56F8335 Technical Data, Rev. 1

Freescale Semiconductor

Preliminary

MISO0

(GPIOE6)

125

Input/

Output

Input/

Output

Input

SPI 0 Master In/Slave Out — This serial data pin is an input to a

master device and an output from a slave device. The MISO line

of a slave device is placed in the high-impedance state if the

slave device is not selected. The slave device places data on the

MISO line a half-cycle before the clock edge the master device

uses to latch the data.

Port E GPIO — This GPIO pin can be individually programmed

as an input or output pin.

After reset, the default state is MISO0.

To deactivate the internal pull-up resistor, clear bit 6 in the

GPIOE_PUR register.

SS0

(GPIOE7)

123

Input

Input/

Output

Input

SPI 0 Slave Select — SS0 is used in slave mode to indicate to

the SPI module that the current transfer is to be received.

Port E GPIO — This GPIO pin can be individually programmed

as an input or output pin.

After reset, the default state is SS0.

To deactivate the internal pull-up resistor, clear bit 7 in the

GPIOE_PUR register.

PHASEA1

(TB0)

(SCLK1)

(GPIOC0)

9Schmitt

Input

Schmitt

Input/

Output

Schmitt

Input/

Output

Schmitt

Input/

Output

Input

Phase A1 — Quadrature Decoder 1, PHASEA input for decoder

TB0 — Timer B, Channel 0

SPI 1 Serial Clock — In the master mode, this pin serves as an

output, clocking slaved listeners. In slave mode, this pin serves

as the data clock input. To activate the SPI function, set the

PHSA_ALT bit in the SIM_GPS register. For details, see Part

6.5.8.

Port C GPIO — This GPIO pin can be individually programmed

as an input or output pin.

In the 56F8335, the default state after reset is PHASEA1.

In the 56F8135, the default state is not one of the functions

offered and must be reconfigured.

To deactivate the internal pull-up resistor, clear bit 0 in the

GPIOC_PUR register.

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

Signal

Name

Pin No.

Type

State

During

Reset

Signal Description

56F8335 Datasheet(PDF) 25 Page - Freescale Semiconductor, Inc

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