MCHC908QT4CDWE.pdf1.1 Introduction
The MC68HC908QY4 is a member of the low-cost, high-performance M68HC08 Family of 8-bit
microcontroller units (MCUs). The M68HC08 Family is a Complex Instruction Set Computer (CISC) with
a Von Neumann architecture. All MCUs in the family use the enhanced M68HC08 central processor unit
(CPU08) and are available with a variety of modules, memory sizes and types, and package types.
The MC68HC908QY4 is a member of the low-cost, high-performance M68HC08 Family of 8-bit
microcontroller units (MCUs). The M68HC08 Family is a Complex Instruction Set Computer (CISC) with
a Von Neumann architecture. All MCUs in the family use the enhanced M68HC08 central processor unit
(CPU08) and are available with a variety of modules, memory sizes and types, and package types.
1.2 Features
Features include:
• High-performance M68HC08 CPU core
• Fully upward-compatible object code with M68HC05 Family
• 5-V and 3-V operating voltages (VDD)
• 8-MHz internal bus operation at 5 V, 4-MHz at 3 V
• Trimmable internal oscillator
– 3.2 MHz internal bus operation
– 8-bit trim capability allows 0.4% accuracy(1)
– ± 25% untrimmed
• Auto wakeup from STOP capability
• Configuration (CONFIG) register for MCU configuration options, including:
– Low-voltage inhibit (LVI) trip point
• In-system FLASH programming
• FLASH security(2)
Features include:
• High-performance M68HC08 CPU core
• Fully upward-compatible object code with M68HC05 Family
• 5-V and 3-V operating voltages (VDD)
• 8-MHz internal bus operation at 5 V, 4-MHz at 3 V
• Trimmable internal oscillator
– 3.2 MHz internal bus operation
– 8-bit trim capability allows 0.4% accuracy(1)
– ± 25% untrimmed
• Auto wakeup from STOP capability
• Configuration (CONFIG) register for MCU configuration options, including:
– Low-voltage inhibit (LVI) trip point
• In-system FLASH programming
• FLASH security(2)
• MC68HC908QY4, MC68HC908QY2, and MC68HC908QY1 are available in these packages:
– 16-pin plastic dual in-line package (PDIP)
– 16-pin small outline integrated circuit (SOIC) package
– 16-pin thin shrink small outline package (TSSOP)
• MC68HC908QT4, MC68HC908QT2, and MC68HC908QT1 are available in these packages:
– 8-pin PDIP
– 8-pin SOIC
– 8-pin dual flat no lead (DFN) package
– 16-pin plastic dual in-line package (PDIP)
– 16-pin small outline integrated circuit (SOIC) package
– 16-pin thin shrink small outline package (TSSOP)
• MC68HC908QT4, MC68HC908QT2, and MC68HC908QT1 are available in these packages:
– 8-pin PDIP
– 8-pin SOIC
– 8-pin dual flat no lead (DFN) package
