MC68HC05P4A

Microcontrollers

GeneralDescription 1.1Introduction TheMC68HC05P4Aisa28-pinMCU(microcontrollerunit)basedontheMC68HC05P4.Thememorymapincludes4160bytesofuserROMand176bytesofRAM.TheMCUhastwo8-bitinput/output(I/O)ports,AandC.PortBhasthreeI/OpinsandportDhastwopins

MC68HC05P4A

Microcontroller; Low-Cost, M68HC05 Core\n\n\n\n?28-pin package\n\n\n?On-chip oscillator with RC (resistor capacitor) or crystal/ceramicresonator mask options\n\n\n?4160 bytes of user read-only memory (ROM), including 16 uservector locations\n\n\n?ROM security feature 1\n\n\n?176 bytes of on-chip random-access memory (RAM)\n\n\n?16-bit timer\n\n\n?20 bidirectional input/output (I/O) lines, one input-only line\n\n\n?Mask programmable keyscan (pullups and interrupt) on eight portpins (PA0&–PA7)\n\n\n?Two port pins with high current drive capability\n\n;

Overview 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(SIOP) and an on-chip mask programmable computer operating properly (COP) watchdog circuit.\nArchived content is no longer updated and is made available for historical reference only.\n

MC68HC05P4A

Microcontrollers

68HC05P4A

SPECIFICATION(GeneralRelease)

MC68HC05P4

HCMOSMICROCONTROLLERUNIT

MC68HC05P4DW

HCMOSMICROCONTROLLERUNIT

MC68HC05P4P

HCMOSMICROCONTROLLERUNIT