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GENERAL DESCRIPTION

The MC68HC05J5 HCMOS Microcontroller is a member of the MC68HC05

Family of low-cost single-chip 8-bit Microcontroller Units (MCUs). The

MC68HC05J5 is an enhanced version of the MC68HC05J1A, which includes high

sink current port pins, slow output transition port pins, an extra interrupt on a port

pin, low-voltage-reset, and a tight tolerance RC oscillator option.

The MC68HC05J5 is available in 20-pin and 16-pin packages. (The 16-pin

package has four less I/O port lines than the 20-pin package.)

Although the MC68HC05J5 is an enhanced version of the MC68HC05J1A, their

pin assignments are different.

FEATURES

? Industry standard M68HC05 CPU core

? Fully static operation with no minimum clock speed

? 1240 bytes of user ROM

? 64 bytes of user RAM

? 14 bidirectional I/O pins

? On-chip Oscillator: Crystal/Resonator Oscillator or

RC Oscillator with only one external resistor required

? Low Voltage Reset (LVR)

? Hardware mask and flag for external interrupts

? 15-bit Multi-Function Timer

? Computer Operating Properly (COP) watchdog

? Power saving STOP and WAIT modes

? Illegal Address Reset (ILADR)

? Available in 16-pin PDIP, 16-pin SOIC,

20-pin PDIP, and 20-pin SOIC packages