MAC7200 datasheet(876/976 Pages) FREESCALE

876 / 976 page

Introduction

MAC7200 Microcontroller Family Reference Manual, Rev. 2

798

Freescale Semiconductor

34.1.2

Features

The Port Integration Module includes these distinctive features:

•

Select between GPIO, interrupt or peripheral functionality on a pin-by-pin basis

•

6 independent 16-bit ports (Port A, B, C, D, F, G), with each pin having the following features:

— Peripheral or GPIO Mode selection, with up to 3 peripherals per pin

— Input/Output selection

— 5V output drive with three selectable slew rates (Disabled, Slow, Fast)

— 5V digital inputs

— Selectable pull-up or pull-down

— Selectable open drain for wired-or connections

— Selectable interrupt capability (with glitch filtering and interrupt mask)

•

Control of ATD digital inputs (Port E)

— Selectable interrupt capability (with glitch filtering and interrupt mask)

•

Control of the TCK, TMS, TDI and TDO pads

— Input/Output selection

— 5V output drive with three selectable slew rates (Disabled, Slow, Fast) (TDO only)

— 5V digital inputs

— Selectable pull-up or pull-down (TCK, TMS and TDI only)

34.1.3

Modes of Operation

34.1.3.1

Peripheral Mode (CONFIG::MODE[1:0]

≠ 0 0)

In this mode, the peripheral drives all data and control signals to the pad, with the exception of the Slew

Rate (SRE1/SRE0) signals, which are always driven by the SLEWDIS and SLEW bits in the

corresponding CONFIGxx register in the PIM.

Table 34-3. PIM Peripheral Mode Configuration

Definition

PORTDATA/PINDATAxx

This value has no effect.

PORTIR

This read-only register returns the value currently driven on the pin by the peripheral

(output) or by an external device (input).

DDR

This register bit has no effect.

SLEWDIS/SLEW

Slew Rate control bits: Controls the slew rate of the pin (output only).

SLEWDIS = 0

Slew Rate control is disabled

SLEW

0 = Fast slew rate, 1 = Slow slew rate

PULL

These two register bits have no effect.

MAC7200 Datasheet(PDF) 876 Page - Freescale Semiconductor, Inc

MAC7200 Datasheet(HTML) 876 Page - Freescale Semiconductor, Inc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL