MC68331CFC16 参数 Datasheet PDF下载

Freescale Semiconductor, Inc.

2 Signal Descriptions

2.1 Pin Characteristics

The following table shows MCU pins and their characteristics. All inputs detect CMOS logic levels. All

inputs can be put in a high-impedance state, but the method of doing this differs depending upon pin

function. Refer to

, for a description of output drivers. An entry in the discrete I/O column of

indicates that a pin has an alternate I/O function. The port designation is given when it applies.

Refer to the MCU Block Diagram for information about port organization.

Table 2 MCU Pin Characteristics

Pin

Mnemonic

ADDR23/CS10/ECLK

ADDR[22:19]/CS[9:6]

ADDR[18:0]

AS

AVEC

BERR

BG/CS1

BGACK/CS2

BKPT/DSCLK

BR/CS0

CLKOUT

CSBOOT

DATA[15:0]

1

DS

DSACK1

DSACK0

DSI/IFETCH

DSO/IPIPE

EXTAL

2

FC[2:0]/CS[5:3]

FREEZE/QUOT

IC4/OC5

IC[3:1]

HALT

IRQ[7:1]

MISO

MODCLK

1

MOSI

OC[4:1]

PAI

3

PCLK

3

PCS0/SS

PCS[3:1]

PWMA, PWMB

R/W

RESET

RMC

Output

Driver

A

A

A

B

B

B

B

B

—

B

A

B

Aw

B

B

B

A

A

—

A

A

A

A

Bo

B

Bo

B

Bo

A

—

—

Bo

Bo

A

A

Bo

B

Input

Synchronized

Y

Y

Y

Y

Y

Y

—

Y

Y

Y

—

—

Y

Y

Y

Y

Y

—

—

Y

—

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

—

Y

Y

Y

Input

Hysteresis

N

N

N

N

N

N

—

N

Y

N

—

—

N

N

N

N

Y

—

Special

N

—

Y

Y

N

Y

Y

N

Y

Y

Y

Y

Y

Y

—

N

Y

N

Discrete

I/O

O

O

—

I/O

I/O

—

—

—

—

—

—

—

—

I/O

I/O

I/O

—

—

—

O

—

I/O

I/O

—

I/O

I/O

I/O

I/O

I/O

I

I

I/O

I/O

O

—

—

I/O

Port

Designation

—

PC[6:3]

—

PE5

PE2

—

—

—

—

—

—

—

—

PE4

PE1

PE0

—

—

—

PC[2:0]

—

GP4

GP[7:5]

—

PF[7:1]

PQS0

PF0

PQS1

GP[3:0]

—

—

PQS3

PQS[6:4]

—

—

—

PE3

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MC68331TS/D

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