MC68HC908MR8 Datasheet, PDF (29/372 Pages) Motorola, Inc – Microcontrollers

Technical Data — MC68HC908MR8
Section 1. General Description
1.1 Contents
1.2 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
1.3 Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
1.4 MCU Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
1.5 Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
1.5.1
1.5.2
Power Supply Pins (V_DD and V_SS) . . . . . . . . . . . . . . . . . . 34
Oscillator Pins (OSC1 and OSC2). . . . . . . . . . . . . . . . . . .34
1.5.3 External Reset Pin (RST) . . . . . . . . . . . . . . . . . . . . . . . . . .34
1.5.4 External Interrupt Pin (IRQ) . . . . . . . . . . . . . . . . . . . . . . . .35
1.5.5
1.5.6
1.5.7
CGM Power Supply Pins (V_DDA and V_SSA) . . . . . . . . . . . .35
ADC Reference Voltage Input Pin (V_REFH) . . . . . . . . . . . .35
External Filter Capacitor Pin (CGMXFC) . . . . . . . . . . . . .35
1.5.8 Port A Input/Output (I/O) Pins (PTA6/ATD6–PTA0/ATD0)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
1.5.9 Port B I/O Pins (PTB6/TCHB1–PTB0/RxD) . . . . . . . . . . . .36
1.5.10 Port C I/O Pins (PTC1/FAULT1–PTC0/FAULT4). . . . . . . .36
1.5.11 PWM Pins (PWM6–PWM1) . . . . . . . . . . . . . . . . . . . . . . . . .36
1.2 Introduction
The MC68HC908MR8 is a member of the low-cost, high-performance
M68HC08 Family of 8-bit microcontroller units (MCU). The M68HC08
Family is based on the customer-specified integrated circuit (CSIC)
design strategy. All MCUs in the family use the enhanced M68HC08
central processor unit (CPU08) and are available with a variety of
modules, memory sizes and types, and package types.
MC68HC908MR8 — Rev 4.1
Freescale Semiconductor
General Description
Technical Data
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