General Description

The MC68HC05L5 is an 80-pin microcontroller unit (MCU) with highly

sophisticated on-chip peripheral functions. The memory map includes

8 Kbytes of user ROM and 256 bytes of static RAM. The MCU has five

parallel ports: A, B, C, D, and E. The MC68HC05L5 includes a timebase

circuit, 8- and 16-bit timers, a computer operating properly (COP)

watchdog timer, liquid crystal display (LCD) drivers, and a simple serial

peripheral interface (SSPI).

Features of the MC68HC05L5 MCU include:

? Low-cost HC05 core

? 8,208 bytes of user ROM and 256 bytes of user static RAM

? General-purpose data pins:

– 14 bidirectional pins

– 10 input/ouptut-only pins

– 15 output-only pins, including 8-bit key wakeup interrupts

? Pullup resistors options

? Open-drain outputs options

? Two interrupt request (IRQ) inputs

? 16-bit timer with input capture and output compare (timer 1)

? 8-bit event counter/modulus clock divider (timer 2)

? Simple serial peripheral interface (SSPI)

? LCD drivers — 1-to-4 backplane drivers x 27-to-39 frontplane

drivers

? On-chip timebase circuits with COP watchdog timer and timebase

interrupts

? Dual oscillators and selectable system clock frequency

? Power-saving stop mode and wait mode

? 80-pin quad flat pack (QFP) package

MC68HC705L5FU屬于集成電路（IC） > 微控制器。恩智浦半導(dǎo)體公司制造生產(chǎn)的MC68HC705L5FU微控制器微控制器產(chǎn)品是相對復(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。不過按照傳統(tǒng)，微控制器集成了工作存儲器，也更可能包含混合信號外設(shè)，并且往往與更簡單的軟件范例結(jié)合使用，旨在重復(fù)執(zhí)行一系列預(yù)定義的任務(wù)。