MC68HC908JB8 Datasheet, PDF (27/286 Pages) Motorola, Inc – MICROCONTROLLERS

Technical Data — MC68HC908JB8•MC68HC08JB8•MC68HC08JT8
Section 1. General Description
1.1 Contents
1.2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
1.3 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
1.4 MCU Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
1.5 Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
1.5.1
1.5.2
1.5.3
Power Supply Pins (V_DD, V_SS) . . . . . . . . . . . . . . . . . . . . . . . 34
Voltage Regulator Out (V_REG) . . . . . . . . . . . . . . . . . . . . . . . 34
Oscillator Pins (OSC1 and OSC2) . . . . . . . . . . . . . . . . . . . . 35
1.5.4 External Reset Pin (RST) . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
1.5.5 External Interrupt Pins (IRQ, PTE4/D–) . . . . . . . . . . . . . . . . 35
1.5.6 Port A Input/Output (I/O) Pins (PTA7/KBA7–PTA0/KBA0). . 36
1.5.7 Port B (I/O) Pins (PTB7–PTB0) . . . . . . . . . . . . . . . . . . . . . . 36
1.5.8 Port C I/O Pins (PTC7–PTC0) . . . . . . . . . . . . . . . . . . . . . . . 36
1.5.9 Port D I/O Pins (PTD7–PTD0) . . . . . . . . . . . . . . . . . . . . . . . 36
1.5.10 Port E I/O Pins (PTE4/D–, PTE3/D+, PTE2/TCH1,
PTE1/TCH0, PTE0/TCLK). . . . . . . . . . . . . . . . . . . . . . . . 36
1.2 Introduction
The MC68HC908JB8 is a member of the low-cost, high-performance
M68HC08 Family of 8-bit microcontroller units (MCUs). 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.
MC68HC908JB8•MC68HC08JB8•MC68HC08JT8 — Rev. 2.3
Freescale Semiconductor
General Description
Technical Data
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