MC68HC705K1 Datasheet, PDF (16/140 Pages) Freescale Semiconductor, Inc – HCMOS Microcontroller Unit

Freescale Semiconductor, Inc.
General Description
On-chip memory of the MC68HC705K1 includes 504 bytes of erasable,
programmable read-only memory (EPROM). In packages without the
transparent window for EPROM erasure, the 504 EPROM bytes serve
as one-time programmable read-only memory (OTPROM).
1.3 Features
Features of the MCU include:
• Popular M68HC05 CPU
• Memory-mapped input/output (I/O) registers
• 504 bytes of EPROM/OTPROM, including eight user vector
locations
• 32 bytes of user random-access memory (RAM)
• 64-bit personality EPROM
• 10 bidirectional I/O pins with these features:
– Software programmable pulldown devices
– Four I/O pins with 8-mA current sinking capability
– Four I/O pins with maskable external interrupt capability
• Hardware mask and flag for external interrupts
• Fully static operation with no minimum clock speed
• On-chip oscillator with connections for:
– Crystal or ceramic resonator
– Mask-optional 2-pin or 3-pin resistor-capacitor (RC) oscillator
• Computer operating properly (COP) watchdog
• 15-bit multifunction timer with real-time interrupt circuit
• Power-saving stop, wait, halt, and data-retention modes
• 8 × 8 unsigned multiply instruction
• Illegal address reset
• Low-voltage reset
Technical Data
General Description
For More Information On This Product,
Go to: www.freescale.com
MC68HC705K1 — Rev. 2.0