MC68HC05V12 Datasheet, PDF (25/246 Pages) Freescale Semiconductor, Inc – HCMOS Microcontreller Unit

Freescale Semiconductor, Inc.
General Description
MCU Structure
• 23 general-purpose input/output (I/O) pins:
– Eight I/O pins with interrupt wakeup capability
– Eight I/O pins multiplexed with timer, PWMs, and serial
peripheral interface (SPI) pins
– Seven general-purpose I/O pins
• Five input-only pins multiplexed with A/D
• On-chip H-bridge driver circuitry to drive six gauges:
– Four minor gauges
– Two major gauges
• Mask option selectable low-voltage reset (LVR)
• Power-saving stop mode and wait mode instructions (mask option
selectable STOP instruction disable)
1.4 MCU Structure
The overall block diagram of the MC68HC05V12 is shown in
Figure 1-1.
NOTE:
A line over a signal name indicates an active low signal. For example,
RESET is active high and RESET is active low. Any reference to voltage,
current, or frequency specified in the following sections will refer to the
nominal values. The exact values and their tolerance or limits are
specified in Section 17. Electrical Specifications.
1.5 Selectable Mask Options
These mask options are selectable:
• Sensitivity on IRQ interrupt, edge- and level-sensitive or edge-
sensitive only
• Selectable COP watchdog system enable/disable
• Selectable low-voltage reset (LVR) to hold the central processor
unit (CPU) in reset
• Selectable STOP instruction disable
MC68HC05V12 — Rev. 2.0
General Description
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Technical Data