Freescale Semiconductor, Inc.
Ge ne ra l De sc rip tion
1.2 Introd uc tion
The Motorola MC68HC705JJ7 and MC68HC705JP7 are EPROM
versions of the MC68HC05JJ/JP Family of microcontrollers.
1.3 Fe a ture s
• Low-Cost, HC05 Core MCU in 20-Pin Package (MC68HC705JJ7)
or 28-Pin Package (MC68HC705JP7)
• 6160 Bytes of User EPROM (Including 16 Bytes of User Vectors)
• 224 Bytes of Low-Power User RAM (4 Transistors)
• 64 Bits of Personality EPROM (Serial Access)
• 16-Bit Programmable Timer with Input Capture and Output
Compare
• 15-Stage Core Timer Including 8-Bit Free-Running Counter
and 4-Stage Selectable Real-Time Interrupt Generator
• Simple Serial Input/Output Port (SIOP) with Interrupt Capability
• Two Voltage Comparators, One of Which Can be Combined with
the 16-Bit Programmable Timer to Create a 4-Channel, Single-
Slope A/D Converter
• Output of Voltage Comparator Can Drive Port Pin PB4 Directly
Under Software Control
• 14 I/O Lines (MC68HC705JJ7) or 22 I/O Lines (MC68HC705JP7)
Including High-Source/Sink Current Capability on 6 I/O Pins
(MC68HC705JJ7) or 14 I/O Pins (MC68HC705JP7)
• Programmable 8-Bit Mask Option Register (MOR) to Select Mask
Options Found in ROM-Based Versions
• MOR Selectable Software Programmable Pulldowns on All I/O
Pins and Keyboard Scan Interrupt on Four I/O Pins
• Software Mask and Request Bit for IRQ Interrupt with MOR
Selectable Sensitivity on IRQ Interrupt (Edge- and Level-Sensitive
or Edge-Only)
General Release Specification
MC68HC705JJ7/MC68HC705JP7 — Rev. 3.0
General Description
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