Description

The CSPEMI204G is an electronic component model in the IC Chips product category. It is a member of the low-cost, high-performance M68HC08 family of 8-bit microcontroller units (MCUs). The CSPEMI204G features the enhanced M68HC08 central processor unit (CPU08) and is available with a variety of modules, memory sizes and types, and package types.

Specifications and features

• High-performance M68HC08 architecture
• Fully upward-compatible object code with M6805, M146805, and M68HC05 Families
• Low-power design; fully static with stop and wait modes
• Maximum internal bus frequency: 8-MHz at 5-V operating voltage, 4-MHz at 3-V operating voltage
• Oscillator options: crystal or resonator, RC oscillator
• 16,384 bytes user program FLASH memory with security(1)
• 512 bytes of on-chip random-access memory (RAM)
• Two 16-bit, 2-channel timer interface modules (TIM1 and TIM2) with selectable input capture, output compare, and pulse-width modulation (PWM) capability on each channel; external clock input option on TIM2
• 13-channel, 10-bit analog-to-digital converter with internal bandgap reference channel (ADC10)
• Serial communications interface module (SCI)
• Multi-master IIC module (MMIIC)
• Up to 26 general-purpose input/output (I/O) ports: 8 keyboard interrupt with internal pull up, 11 LED drivers (sink), 2 × 25 mA open-drain I/O with pull up
• Inputs contain hysteresis buffer for improved noise immunity
• Resident routines for in-circuit programming and EEPROM emulation
• System protection features: optional computer operating properly (COP) reset, driven by internal RC oscillator; optional low-voltage detection with reset and selectable trip points for 3-V and 5-V operation; illegal opcode detection with reset; illegal address detection with reset
• Master reset pin with internal pull-up and power-on reset
• IRQ with schmitt-trigger input and programmable pull up
• The CSPEMI204G is available in the following packages: 28-pin plastic dual in-line package (PDIP), 28-pin small outline integrated package (SOIC), 32-pin shrink dual in-line package (SDIP), 32-pin low-profile quad flat pack (LQFP)
• Specific features in 28-pin packages are: 23 general-purpose I/Os only, 7 keyboard interrupt with internal pull up, 10 light-emitting diode (LED) drivers (sink), 12-channel ADC, Timer I/O pins on TIM1 only

Application Scenarios

The CSPEMI204G is suitable for various applications that require a low-cost, high-performance 8-bit microcontroller. It can be used in industries such as automotive, consumer electronics, industrial automation, and more.

Comparison

• High-performance M68HC08 architecture
• Fully upward-compatible object code with M6805, M146805, and M68HC05 Families
• Low-power design; fully static with stop and wait modes
• Maximum internal bus frequency: 8-MHz at 5-V operating voltage, 4-MHz at 3-V operating voltage
• Wide range of oscillator options
• Large user program FLASH memory and on-chip RAM
• Multiple timer interface modules and analog-to-digital converter
• Various communication interface modules
• Flexible general-purpose I/O ports with hysteresis buffer
• System protection features for reliable operation

• Limited specific features in 28-pin packages
• May not be suitable for applications requiring higher bit microcontrollers