DSP56800FMD MOTOROLA [Motorola, Inc], DSP56800FMD Datasheet - Page 9

• Manufacturer Part Number: DSP56800FMD
• Description: Preliminary Technical Data DSP56F826 16-bit Digital Signal Processor
• Manufacturer: MOTOROLA [Motorola, Inc]

All inputs have a weak internal pull-up circuit associated with them. These pull-up circuits are always enabled.
Exceptions:
EXTBOOT
CLOCKIN
GPIOD0
GPIOD1
GPIOD2
GPIOD3
GPIOD4
GPIOD5
GPIOD6
GPIOD7
GPIOB0
GPIOB1
GPIOB2
GPIOB3
GPIOB4
GPIOB5
GPIOB6
GPIOB7
EXTAL
1.
2.
Signal
Name
Table 3. DSP56F826 Signal and Package Information for the 100 Pin LQFP
When a pn is owned by GPIO, then the pull-up may be disabled under software control.
TCK has a weak pull-down circuit always active.
Pin No.
61
25
66
67
68
69
70
71
72
73
74
75
76
77
78
79
82
83
Input
Input
Input or Output
Input or Output
Input
Type
DSP56F826 Preliminary Technical Data
External Crystal Oscillator Input—This input can be connected to an
4MHz external crystal. If a 4MHz or less external clock source is used,
EXTAL can be used as the input and XTAL must not be connected. For
more information, please refer to
External Clock Input—This input can be connected to an external 8MHz
clock. For more information, please refer to
The input clock can be selected to provide the clock directly to the DSP core.
This input clock can also be selected as input clock for the on-chip PLL.
External Boot—This input is tied to V
chip memory. Otherwise, it is tied to ground.
Port B GPIO—These eight dedicated General Purpose I/O (GPIO) pins can
be individually programmed as input or output pins.
After reset, the default state is GPIO input.
Port D GPIO—These eight dedicated GPIO pins can be individually
programmed as an input or output pins.
After reset, the default state is GPIO input.
Description
Section
DD
3.5.2.
to force device to boot from off-
Section
3.5.
Introduction
9