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Z8C520 Datasheet

IC型號：
Z8C520
PDF描述：
1.5 MBPS USB Device Controller
文件大小：
581.73KB
PDF頁數(shù)：
43頁
芯片廠家：
ZILOG

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P

RELIMINARY

P

RODUCT

S

PECIFICATION

Z8E520/C520

1.5 MBPS USB L

OW

-P

OWER

D

EVICE

C

ONTROLLER

F

OR

M

ULTIPROTOCOL

P

OINTING

D

EVICES

FEATURES

Part

Number

Z8E520 (OTP)

Z8C520 (ROM)

s

s

s

1

ROM

(KB)

6

6

RAM

(Bytes)

176

176

Speed

(MHz)

12

12

s

Software Programmable Timers Configurable as:

鈥?Two 8-Bit Standard Timers and One 16-Bit

Standard Timer or

鈥?/div>

One 16-Bit Standard Timer and One 16-Bit Pulse

Width Modulator (PWM) Timer

Six Vectored Interrupts with Fixed Priority

Processor Speed Dividable by Firmware Control

Operating Current: 5 mA typical in USB Mode; 2.5 mA

typical in Serial Mode (@ 3 MHz); 5 mA typical in PS/2

Mode

16 Total Input/Output Pins (Open-Drain/Push-Pull)

Configurable

6 inputs with 3 level Programmable Reference

Comparators

16-Bit Programmable Watch-Dog Timer (WDT) with

Internal RC Oscillator

s

s

Identical Masked ROM Version (Z8C520)

On-Chip Oscillator that accepts a Ceramic Resonator or

External Clock

Hardware Support for PS/2, Serial, USB, and General-

Purpose I/O (GPIO)

Power Reduction Modes:

鈥?STOP Mode (functionality shut down except SMR)

鈥?HALT Mode (XTAL still running-peripherals active)

USB SIE Compliant with USB Spec 1.0

4.0 VDC to 6.0 VDC Operating Range @ 0

擄

C to +70

擄

C

s

s

s

s

s

s

s

GENERAL DESCRIPTION

Zilog鈥檚 Z8E520 (OTP) and Z8C520 (Masked ROM) micro-

controllers are low-power Z8

Plus

MCUs, designed for the

cost-effective implementation of USB and multiprotocol

pointing devices.

For applications demanding powerful I/O capabilities, the

Z8E520's input and output lines are grouped into two ports,

and are configurable under software control to provide tim-

ing, status signals, or parallel I/O.

Both 8-bit and 16-bit timers, with a large number of user se-

lectable modes, off-load the system of administering real-

time tasks such as counting/timing and I/O data communi-

cations.

The microcontroller clock frequency is derived from the

system clock by a programmable divider under firmware

control.

The device is capable of functioning in four distinct, select-

able communications modes: PS/2, RS232, GPIO (Gener-

al-purpose I/O), and USB. The communications mode de-

termines the functionality of the two special serial

communications pins (PB6 and PB7). The device is placed

in the required mode when firmware sets the specified

mode bit in the communications control register. The firm-

ware interface is similar in all modes. The same buffer area

in RAM will accept the data to be transmitted. Up to 8 bytes

may be loaded, and the data will actually be transmitted as

soon as the appropriate command is issued (setting In

Packet Ready in USB mode, for example).

DS97KEY2005

PRELIMINARY

1

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Z8C520相關(guān)型號PDF文件下載

型號

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描述

廠商

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Z8C520

英文版

1.5 MBPS USB Device Controller

Z8C520
Z8C520

英文版

1.5 MBPS USB Device Controller

ZILOG [Zil...

Z8C520

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