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

MC68HC705L5属于集成电路（IC） > 微控制器。恩智浦半导体公司制造生产的MC68HC705L5微控制器微控制器产品是相对复杂的用户可编程数字逻辑器件。这些产品与视为微控制器的器件密切相关，两者之间的区别主要体现在制造商选择的用词。不过按照传统，微控制器集成了工作存储器，也更可能包含混合信号外设，并且往往与更简单的软件范例结合使用，旨在重复执行一系列预定义的任务。