MC68HC705F32中文资料Microcontroller数据手册恩XP规格书

描述 Description

Overview The MC68HC705F32 is a member of Our M68HC05 family of HCMOS microcomputers. Its memory configuration comprises 32 KB of EPROM, 920B of RAM and 256B of EEPROM. The on-board features of this device make it particularly suitable for use in highly integrated telephone handsets; the timer and dual-tone multi-frequency (DTMF) generator allow for both pulse and tone dialling and, in addition to set-up parameters and features such as last number redial, the EEPROM can typically store up to 12 telephone numbers of 20 digits, even after power has been removed from the circuit. Other features of the device include the keyboard interrupt facility, which allows a direct interface to a telephone keypad, the LCD circuit, which can drive up to 160 segments of an LCD display, and the analog-to-digital converter (ADC) which could be used, for example, as a volume control for a telephone in hands-free mode.
Archived content is no longer updated and is made available for historical reference only.

特性 Features

•Fully static design featuring the industry-standard M68HC05 CPU core

•32512B of user EPROM, plus 16B for vectors

•240B of bootloader ROM

•920B of RAM plus 20B of LCD RAM

•256B of user EEPROM

•DTMF/melody generator

•16-bit programmable timer with four input captures and four output compares (the outputs of two of the output compares are used internally and do not have external connections)

•15-stage multipurpose core timer with timer overflow, real-time interrupt and computer operating properly watchdog

•LCD driver with four backplanes and 40 frontplanes

•8-channel, 8-bit ADC


Note: The 80-pin version is only a bond option. Pins PE4, PD7–PD0, PC4 and PC5 are shared with module functions which cannot work on the 80-pin package. These modules and their corresponding pin functions should not be enabled.