56F8156 Просмотр технического описания (PDF) - Freescale Semiconductor

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56F8156

16-bit Digital Signal Controllers

Freescale Semiconductor 

Signal Pins

Table 2-2 Signal and Package Information for the 144-Pin LQFP (Continued)

Signal Name Pin No. Type

State

During

Reset

Signal Description

D7

28

Input/

In reset, Data Bus — D7 - D14 specify part of the data for external program

Output

output is or data memory accesses.

disabled,

pull-up is Most designs will want to change the DRV state to DRV = 1 instead of

enabled using the default setting.

(GPIOF0)

D8

(GPIOF1)

D9

(GPIOF2)

D10

(GPIOF3)

D11

(GPIOF4)

D12

(GPIOF5)

D13

(GPIOF6)

D14

(GPIOF7)

D15

Input/

Output

29

30

32

133

Port F GPIO — These eight GPIO pins can be individually

programmed as input or output pins.

At reset, these pins default to Data Bus functionality.

To deactivate the internal pull-up resistor, clear the appropriate

GPIO bit in the GPIOF_PUR register.

Example: GPIOF0, clear bit 0 in the GPIOF_PUR register.

134

135

136

137

Input/

In reset, Data Bus — D15 specifies part of the data for external program or

Output

output is data memory accesses.

disabled,

pull-up is Most designs will want to change the DRV state to DRV = 1 instead of

enabled using the default setting.

(GPIOF8)

Input/

Output

Port F GPIO — This GPIO pin can be individually programmed as

an input or output pin.

At reset, this pin defaults to the Data Bus function.

To deactivate the internal pull-up resistor, clear bit 8 in the

GPIOF_PUR register.

56F8356 Technical Data, Rev. 13

Freescale Semiconductor

23

Preliminary

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