DSP56854 View Datasheet(PDF) - Freescale Semiconductor

Part Name

Description

Manufacturer

DSP56854

16-bit Digital Signal Controllers

Freescale Semiconductor 

Part 3 Signals and Package Information

All digital inputs have a weak internal pull-up circuit associated with them. These pull-up circuits are

enabled by default. Exceptions:

1. When a pin has GPIO functionality, the pull-up may be disabled under software control.

2. MODE A, MODE B and MODE C pins have no pull-up.

3. TCK has a weak pull-down circuit always active.

4. Bidirectional I/O pullups automatically disable when the output is enabled.

This table is presented consistently with the Signals Identified by Functional Group figure.

1. BOLD entries in the Type column represents the state of the pin just out of reset.

2. Output(Z) means an output in a High-Z condition.

Table 3-1. 56854 Signal and Package Information for the 128-pin LQFP

Pin No.

Signal Name

Type

Description

13

VDD

47

VDD

64

VDD

79

VDD

80

VDD

112

VDD

14

VSS

48

VSS

63

VSS

81

VSS

96

VSS

113

VSS

VDD

Power (VDD)—These pins provide power to the internal structures

of the chip, and should all be attached to VDD.

VSS

Ground (VSS)—These pins provide grounding for the internal

structures of the chip and should all be attached to VSS.

56854 Technical Data, Rev. 6

10

Freescale Semiconductor

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