MMC2001 datasheet(39/259 Pages) NXP

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MOTOROLA

SIGNAL DESCRIPTIONS

MMC2001

4-2

REFERENCE MANUAL

4.2 Signal Index

Table 4-1 Pin Requirements in 144-Pin Package

Name

Alt

Qty Dir

Pull-Up1

Reset2

Use

External Bus

ADDR[19:0]

—

Address bus

DATA[15:0]

—

I/O

Keeper

Data bus

R/W

—

Read/write enable

EB0

—

Enable data bus byte 0 (DATA[15:8])

EB1

—

Enable data bus byte 1 (DATA[7:0])

—

Output enable

Chip Selects

CS0

—

CS0

Chip select for external Flash

CS1

GPO

—

GPOH

Chip select for external RAM

CS2

GPO

—

GPOH

Chip select (spare)

CS3

GPO

—

GPOL

Chip select for external LCD

Clock, Reset, and Miscellaneous

CLKIN

—

Programmable clock input

CLKOUT

—

Programmable clock output

XOSC

—

32.768-kHz XTAL output

EXOSC

—

32.768-kHz XTAL input

MOD

—

Boot ROM control

RSTOUT

—

Resets external components

RSTIN

—

I—

—

Initiates system reset

LVRSTIN

—

I—

—

Low voltage supply switching control

Debug and Test Port Control

TMS

—

47-K pull-up

—

Test mode select

TDI

—

47-K pull-up

—

Test data input

TDO

—

Test data output

TCK

—

47-K pull-up

—

Test clock input

TRST

—

47-K pull-up

—

Initiates test controller reset

—

I/O

47-K pull-up

—

Initiates or acknowledges debug mode entry

TEST

—

100-K pulldown

—

Factory test mode

Keypad and Edge Port

COL[7:0]

GPIO

I/O

—

GPI

Column 7 – 0

ROW[7:0]

GPIO

I/O

47-K pull-up

GPI

Row 7 – 0

INT[7:0]

GPIO

I/O

—

GPI

External interrupts 7 – 0

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

MMC2001 Datasheet(PDF) 39 Page - NXP Semiconductors

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