Freescale Semiconductor, Inc.
Ge ne ra l De sc rip tion
1.2 Introd uc tion
The Motorola MC68HC705P6A is an EPROM version of the
MC68HC05P6 microcontroller. It is a low-cost combination of an
M68HC05 Family microprocessor with a 4-channel, 8-bit analog-to-
digital (A/D) converter, a 16-bit timer with output compare and input
capture, a serial communications port (SIOP), and a computer operating
properly (COP) watchdog timer. The HC05 CPU core contains 176 bytes
of RAM, 4672 bytes of user EPROM, 239 bytes of bootloader ROM, and
21 input/output (I/O) pins (20 bidirectional, 1 input-only). This device is
available in a 28-pin SOIC, PDIP, or windowed DIP package. A
functional block diagram of the MC68HC705P6A is shown in Figure 1-1.
1.3 Fe a ture s
• Low Cost
• HC05 Core
• 28-Pin SOIC, PDIP, or Windowed DIP Package
• 4672 Bytes of User EPROM (Including 48 Bytes of Page Zero
EPROM and 16 Bytes of User Vectors)
•
239 Bytes of Bootloader ROM
• 176 Bytes of On-Chip RAM
• 4-Channel 8-Bit A/D Converter
• SIOP Serial Communications Port
• 16-Bit Timer with Output Compare and Input Capture
• 20 Bidirectional I/O Lines and 1 Input-Only line
• PC0 and PC1 High-Current Outputs
• Single-Chip, Bootloader, and Test Modes
• Power-Saving Stop, Halt, and Wait Modes
General Release Specification
MC68HC705P6A — Rev. 1.0
General Description
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