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Description
M68HC05 MICROCONTROLLERS
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Introduction
The MC68HC705C8A, an enhanced version of the MC68HC705C8, is a member of the low-cost, high-performance M68HC05 Family of 8-bit microcontroller units (MCU). MC68HSC705C8A, is an enhanced, high-speed version of the MC68HC705C8A. The M68HC05 Family is based on the customer-specified integrated circuit (CSIC) design strategy. All MCUs in the family use the M68HC05 central processor unit (CPU) and are available with a variety of subsystems, memory sizes and types, and package types.
Features
Features of the MC68HC705C8A include:
● M68HC05 central processor unit (CPU)
● On-chip oscillator with crystal/ceramic resonator
● Memory-mapped input/output (I/O)
● Selectable memory configurations
● Selectable programmable and/or non-programmable computer operating properly (COP) watchdog timers
● Selectable port B external interrupt capability
● Clock monitor
● High current drive on pin C7 (PC7)
● 24 bidirectional I/O lines and 7 input-only lines
● Serial communications interface (SCI) system
● Serial peripheral interface (SPI) system
● Bootstrap capability
● Power-saving stop, wait, and data-retention modes
● Single 3.0-volt to 5.5-volt supply (2-volt data-retention mode)
● Fully static operation
● Software-programmable external interrupt sensitivity
● Bidirectional RESET pin
General Description
RAM0 — Random-Access Memory Control Bit 0
1 = Maps 32 bytes of RAM into page zero starting at address
$0030. Addresses from $0020 to $002F are reserved. This bit can be read or written at any time, allowing memory configuration to be changed during program execution.
0 = Provides 48 bytes of PROM at location $0020-$005F.
RAM1 — Random-Access Memory Control Bit 1
1 = Maps 96 bytes of RAM into page one starting at address $0100. This bit can be read or written at any time, allowing memory configuration to be changed during program execution.
0 = Provides 96 bytes of PROM at location $0100.
SEC — Security Bit
This bit is implemented as an erasable, programmable read-only memory (EPROM) cell and is not affected by reset.
1 = Bootloader disabled; MCU operates only in single-chip mode
0 = Security off; bootloader can be enabled
IRQ — Interrupt Request Pin Sensitivity Bit
IRQ is set only by reset, but can be cleared by software. This bit can be written only once.
1 = IRQ pin is both negative edge- and level-sensitive.
0 = IRQ pin is negative edge-sensitive only.
Bits 5, 4, and 0 — Not used; always read 0
Bit 2 — Unaffected by reset; reads either 1 or 0
Preview of the first 3 pages of the data sheet
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10000 buyer reviews from United States
George Torres
Length of registration:7 years
I recently purchased the MC705C8ACPE integrated circuit from Utsource and I am very pleased with the product. The chip arrived quickly and was in perfect condition. I tested the chip and found it to be of excellent quality and performance. The chip worked perfectly in my circuit and I was very impressed with the results. I highly recommend Utsource and the MC705C8ACPE integrated circuit.
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03/17/2023
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Warranty
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MC705C8ACPE
MC705C8ACPE has several brands around the world that may have alternate names for MC705C8ACPE due to regional differences or acquisition. MC705C8ACPE may also be known as the following names:
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