DSP56F826PB Просмотр технического описания (PDF) - Motorola => Freescale

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DSP56F826PB

16-bit Hybrid Controller

Motorola => Freescale 

Freescale Semiconductor, Inc.

Table 3. 56F826 Signal and Package Information for the 100 Pin LQFP

Signal

Name

Pin No.

Type

Description

XTAL

62

(CLOCKIN)

Output

Input

Crystal Oscillator Output—This output connects the internal crystal

oscillator output to an external crystal or ceramic resonator. If an external

clock source over 4MHz is used, XTAL must be used as the input and

EXTAL connected to VSS. For more information, please refer to Section

3.6.3.

External Clock Input—This input should be asserted when using an

external clock or ceramic resonator.

CLKO

65

Output

Clock Output—This pin outputs a buffered clock signal. By programming

the CLKO Select Register (CLKOSR), the user can select between

outputting a version of the signal applied to XTAL and a version of the

device master clock at the output of the PLL. The clock frequency on this

pin can be disabled by programming the CLKO Select Register

(CLKOSR).

A0

24

(GPIOE0)

Output

Address Bus—A0–A7 specify the address for external program or data

memory accesses.

A1

(GPIOE1)

23

Input/Output Port E GPIO—These eight General Purpose I/O (GPIO) pins can be

individually programmed as input or output pins.

A2

22

(GPIOE2)

After reset, the default state is Address Bus.

A3

21

(GPIOE3)

A4

18

(GPIOE4)

A5

17

(GPIOE5)

A6

16

(GPIOE6)

A7

15

(GPIOE7)

8

56F826 Technical Data

For More Information On This Product,

Go to: www.freescale.com

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