mc68hc908jw32 Freescale Semiconductor, Inc, mc68hc908jw32 Datasheet - Page 17

• Manufacturer Part Number: mc68hc908jw32
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Chapter 1
General Description
1.1 Introduction
The MC68HC908JW32 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.
1.2 Features
Features of the MC68HC908JW32 include:
1. No security feature is absolutely secure. However, Freescale’s strategy is to make reading or copying the FLASH/ROM
Freescale Semiconductor
difficult for unauthorized users.
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High-performance M68HC08 architecture
Fully upward-compatible object code with M6805, M146805, and M68HC05 Families
8-MHz internal bus frequency
88-kHz internal RC clock for timebase wakeup
32-Kbytes of on-chip FLASH memory with security
1-Kbytes of on-chip random-access memory (RAM)
On-chip programming firmware for use with host PC computer
Clock generation module (CGM)
Up to 29 general-purpose 5V input/output (I/O) pins, including:
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Serial peripheral interface module (SPI)
PS2 clock generator module
16-bit, 2-channel timer interface module (TIM) with selectable rising and falling edges input
capture, output compare, PWM capability on each channel, and external clock input option
Full universal serial bus (USB) specification 2.0 full-speed functions:
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System protection features:
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Low-power design (fully static with stop and wait modes)
Master reset pin with internal pull-up and power-on reset
Keyboard interrupts on 8 pins
Direct drive for normal LED on 3 pins
High current drive for PS/2 connection on 2 pins (with USB module disabled)
12 Mbps data rate
On-chip 3.3V regulator
Endpoint 0 with 8-byte transmit buffer and 8-byte receive buffer
64 bytes endpoint buffer to share among endpoints 1–4
Optional computer operating properly (COP) reset
Optional low-voltage detection with reset
Illegal opcode detection with reset
Illegal address detection with reset
MC68HC908JW32 Data Sheet, Rev. 5
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