MC68331CFC16 데이터 시트보기 (PDF) - Freescale Semiconductor

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MC68331CFC16

32-Bit Modular Microcontroller

Freescale Semiconductor 

Freescale Semiconductor, Inc.

Table 2 MCU Pin Characteristics (Continued)

Pin

Mnemonic

RXD

SCK

SIZ[1:0]

TSC

TXD

XFC2

XTAL2

Output

Driver

—

Bo

B

—

Bo

—

—

Input

Synchronized

N

Y

Y

Y

Y

—

—

Input

Hysteresis

N

Y

N

Y

Y

—

—

Discrete

I/O

—

I/O

I/O

—

I/O

Special

Special

Port

Designation

—

PQS2

PE[7:6]

—

PQS7

—

—

NOTES:

1. DATA[15:0] are synchronized during reset only. MODCLK is synchronized only when used as an input port

pin.

2. EXTAL, XFC, and XTAL are clock reference connections.

3. PAI and PCLK can be used for discrete input, but are not part of an I/O port.

2.2 MCU Power Connections

VDDSYN

VSSE/VDDE

VSSI/VDDI

Table 3 MCU Power Connections

Clock Synthesizer Power

External Periphery Power (Source and Drain)

Internal Module Power (Source and Drain)

2.3 MCU Driver Types

Type

A

Aw

B

Bo

Table 4 MCU Driver Types

I/O

Description

O Output-only signals that are always driven; no external pull-up required

O Type A output with weak P-channel pull-up during reset

O Three-state output that includes circuitry to pull up output before high impedance is es-

tablished, to ensure rapid rise time. An external holding resistor is required to

maintain logic level while the pin is in the high-impedance state.

O Type B output that can be operated in an open-drain mode

2.4 Signal Characteristics

Signal Name

ADDR[23:0]

AS

AVEC

BERR

BG

BGACK

BKPT

BR

CLKOUT

CS[10:0]

CSBOOT

DATA[15:0]

DS

Table 5 MCU Signal Characteristics

MCU Module

SIM

SIM

SIM

SIM

SIM

SIM

CPU32

SIM

SIM

SIM

SIM

SIM

SIM

Signal Type

Bus

Output

Input

Input

Output

Input

Input

Input

Output

Output

Output

Bus

Output

Active State

—

0

0

0

0

0

0

0

—

0

0

—

0

10

For More Information On This Product,

MC68331TS/D

Go to: www.freescale.com

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