Home  Product Overview    68HC05    68HC08    68HC11    68HC12    68HC16    68300    M·CORE    MPC500  Product Catalog    68HC05    68HC08    68HC11    Selector Guides    · Microcontroller    · Development Tool  Technical Support    Development         Tools    Documentation    Errata Sheets    FAQs    Third Party    Tutorial  Contact Us    How to buy    For add'l support  Other    MCU Site Map    Web Links	68HC05P4A: Microcontroller   The MC68HC05P4A is a 28-pin MCU (microcontroller unit) based on the MC68HC05P4. The memory map includes 4160 bytes of user ROM and 176 bytes of RAM. The MCU has two 8-bit input/output (I/O) ports, A and C. Port B has three I/O pins and port D has two pins, one that is I/O and the other input only. The MC68HC05P4A includes a simple serial I/O peripheral (SIOP) and an on-chip mask programmable computer operating properly (COP) watchdog circuit. Page Contents Features Parametrics Documentation Design Tools Orderable Parts 68HC05P4A Features Low-Cost, M68HC05 Core 28-pin package On-chip oscillator with RC (resistor capacitor) or crystal/ceramicresonator mask options 4160 bytes of user read-only memory (ROM), including 16 uservector locations ROM security feature 1 176 bytes of on-chip random-access memory (RAM) 16-bit timer 20 bidirectional input/output (I/O) lines, one input-only line Mask programmable keyscan (pullups and interrupt) on eight portpins (PA0&endash;PA7) Two port pins with high current drive capability User mode Self-check mode Power-saving stop and wait modes STOP conversion to halt mode (mask option) Edge-sensitive or edge- and level-sensitive interrupt trigger maskoption Simple serial I/O port Mask option selectable computer operating properly (COP)watchdog timer The MC68HC05P4A has 13 mask options: CLOCK, RC or crystal IRQ, edge-sensitive only or edge- and level-sensitive SIOP, most significant bit (MSB) or least significant bit (LSB) first COP watchdog timer, enable/disable Keyscan pullups and interrupts on port A, enable/disable by pin STOP instruction, option to convert to HALT   [top] 68HC05P4A Parametrics ROM (KBytes) RAM (Bytes) Timer I/O Serial Operating Voltage (V) Bus Frequency (Max) (MHz) 4 176 16-Bit 1 I/C 1 O/C 21 SIOP 3.3, 5.0 2.1   [top] 68HC05P4A Documentation Document ID Document Title MC68HC05P4A/D MC68HC05P4A Advance Information Description Rev 68HC05APPNOTES Table of 68HC05 Applications Notes M68HC05AG/AD M68HC05 Applications Guide M68HC05TB/D HC05 Family - Understanding Small Microcontrollers   [top] 68HC05P4A Design Tools and Data ID Name ICS0508 ICS0508 Development Kit M68MMPFB0508 MMEVS Modular Evaluation System M68MMDS0508 MMDS0508 Development System   [top] 68HC05P4A Orderable Parts Orderable Part ID Package Info Status Remarks MC68HC05P4P Plastic Dual In-Line Package (PDIP) - MC68HC05P4DW Small Outline Integrated Circuit (SOIC) -   [top]
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