MC68HC705C9A_1 Datasheet, PDF (18/157 Pages) Freescale Semiconductor, Inc – General Release Specification

Freescale Semiconductor, Inc.
General Release Specification _Introduction
1.2 Introduction
The MC68HC705C9A HCMOS microcomputer is a member of the
M68HC05 Family. The MC68HC705C9A is the EPROM version of the
MC68HC05C9A and also can be configured as the EPROM version of
the MC68HC05C12A. The MC68HC705C9A memory map consists of
12,092 bytes of user EPROM and 176 bytes of RAM when it is
configured as an MC68HC05C12A and 15,932 bytes of user EPROM
and 352 bytes of RAM when configured as an MC68HC05C9A. The
MC68HC705C9A includes a serial communications interface, a serial
peripheral interface, and a 16-bit capture/compare timer.
1.3 Features
• Programmable Mask Option Register (MOR) for C9A/C12A
Configuration
• Programmable MOR for Port B Pullups and Interrupts
• Popular HC05 CPU
• 15,932 Bytes of EPROM (12,092 Bytes for C12A Configuration)
• 352 Bytes of RAM (176 for C12A Configuration)
• Memory Mapped Input/Output (I/O)
• 31 Bidirectional I/O Lines (24 I/O + 6 Input Only for C12A
Configuration) with High Current Sink and Source on PC7
• Asynchronous Serial Communications Interface (SCI)
• Synchronous Serial Peripheral Interface (SPI)
• 16-Bit Capture/Compare Timer
• Computer Operating Properly (COP) Watchdog Timer and Clock
Monitor
• Power-Saving Wait and Stop Modes
• On-Chip Crystal Oscillator Connections
• Single 3.0 Volts to 5.5 Volts Power Supply Requirement
• EPROM Contents Security Feature
MC68HC705C9A — Rev. 2.0
General Description
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