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GENERAL

The MC68HC05P5 is a 28-pin device based on the MC68HC05P7 with an on-chip analog voltage comparator and a two-channel pulse width modulator (PWM). The memory map includes 3136 bytes of user ROM, and 128 bytes of RAM. The MCU has two I/O ports, A and C, consisting of 15 pins with mask programmable pullup devices. Port B consists of 3 pins, 2 input only and 1 output only, shared with an analog voltage comparator. PWM circuitry does not share the output pins with any other module. Port D has 1 input only pin. The MC68HC05P5 has a 16-bit timer, a mask programmable Computer Operating Properly (COP) Watchdog, a mask programmable STOP disable option, and Illegal Address Reset (ILADR) circuitry to ensure proper functioning of any system.

FEATURES

Low cost

Low noise

HC05 Core

28-pin package

On-Chip Oscillator with RC or Crystal/Ceramic Resonator Mask Options

3136 Bytes of User ROM including 16 user vector locations

128 Bytes of On-Chip RAM

16-Bit Timer

15 Bidirectional I/O Lines, 3 input-only lines, 3 output-only lines

User Mode and Self-Check Mode

Power Saving STOP and WAIT Modes

Edge-Sensitive or Edge- and Level-Sensitive Interrupt Trigger Mask Option

Port Pullup Mask Option for Ports A and C

Mask option selectable Watchdog Timer (COP)

Illegal Address Reset (ILADR)

STOP disable Mask Option

Internal Resistor and Capacitors for Oscillator Circuitry