Z86D991SZ008SC集成電路（IC）的微控制器規(guī)格書(shū)PDF中文資料

Z86D991SZ008SC屬于集成電路（IC）的微控制器。由Zilog, Inc.制造生產(chǎn)的Z86D991SZ008SC微控制器微控制器產(chǎn)品是相對(duì)復(fù)雜的用戶可編程數(shù)字邏輯器件。這些產(chǎn)品與視為微控制器的器件密切相關(guān)，兩者之間的區(qū)別主要體現(xiàn)在制造商選擇的用詞。不過(guò)按照傳統(tǒng)，微控制器集成了工作存儲(chǔ)器，也更可能包含混合信號(hào)外設(shè)，并且往往與更簡(jiǎn)單的軟件范例結(jié)合使用，旨在重復(fù)執(zhí)行一系列預(yù)定義的任務(wù)。

Architectural Overview

The Z86L972/Z86L973/Z86L974 family is designed to be used in a wide variety of embedded control applications including home appliances, infrared (IR) remote controls, security systems, and wireless keyboards.

Features

? Two independent analog comparators

? Controlled current output

? 489 bytes of RAM

– 233 bytes of general-purpose register-based RAM

– 256 bytes of RAM mapped into the program memory space that can be

used as data RAM or executable RAM

? 4K/8K/16K bytes of ROM

Counter/Timers

? Special architecture to automate generation and reception of complex pulses

or signals:

– Programmable 8-bit counter/timer (T8) with two 8-bit capture registers and

two 8-bit load registers

– Programmable 16-bit counter/timer (T16) with one 16-bit capture register

pair and one 16-bit load register pair

– Programmable input glitch filter for pulse reception

? One general-purpose 8-bit counter/timer (T1) with 6-bit prescaler

Input/Output and Interrupts

? Thirty-two I/Os, twenty-nine of which are bidirectional I/Os with programmable

resistive pull-up transistors (24 I/Os are available in the 28-pin configuration)

? Sixteen I/Os are selectable as stop-mode recovery sources

? Six interrupt vectors with nine interrupt sources

– Three external sources

– Two comparator interrupts

– Three timer interrupts

– One low-battery detector flag

Operating Characteristics

? 8-MHz operation

? 2.3 V to 5.5 V operating voltage

? Low power consumption with three standby modes:

– Stop

– Halt

– Low Voltage Standby

? Low-battery detection flag

? Low-voltage protection circuit (also known as VBO, or voltage brownout,

circuit)

? Watch-dog timer and power-on reset circuits

User-Programmable Option Bits

? Clock source—RC/other (LC, resonator, or crystal)

? Watch-dog timer permanently enable

? 32-kHz crystal

? Port 20–27 pull-up resistive transistor

? Port 40–42 pull-up resistive transistor

? Port 44–47 pull-up resistive transistor

? Port 50–51 pull-up resistive transistor

? Port 54–57 pull-up resistive transistor

? Port 60–63 pull-up resistive transistor

? Port 64–67 pull-up resistive transistor