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68HC908JB8FS Datasheet, PDF (1/2 Pages) Motorola, Inc – Freescale Semiconductor, Inc. | |||
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Freescale Semiconductor, Inc.
A FLASH MCU SOLUTION
68HC908JB8
8-bit Microcontroller
TARGET APPLICATIONS
⢠PC peripherals
(keyboard, mouse, joystick)
⢠RF wireless receivers
⢠USB converters
⢠USB security keys for
e-commerce
⢠Game pads
⢠Set-top box peripherals
FEATURES
HIGH-PERFORMANCE 68HC08 CPU CORE
BENEFITS
⢠3 MHz bus operation at 3V for 333 nsec
minimum instruction cycle time
⢠Efficient instruction set including multiply
and divide
⢠16 flexible addressing modes including
stack relative with 16-bit stack pointer
⢠Fully static low-voltage, low-power design
with wait and stop modes
⢠Object code compatible with the 68HC05
⢠Easy to learn and use architecture
⢠C optimized architecture provides compact
code
This 8-bit 68HC908JB8 is an upwardly
compatible, versatile migration from
Motorolaâs groundbreaking 68HC05
universal serial bus (USB) Family. The
innovative design features an on-chip USB
module for faster, more reliable PC
peripheral applications. An energy-saving,
low-power solution, the 68HC908JB8 is
embedded with Motorolaâs second-
generation embedded FLASH technology to
enable in-system programmability.
INTEGRATED SECOND GENERATION FLASH MEMORY
⢠In-application re-programmable
⢠Extremely fast programming, encoding
64 bytes in as fast as 2 msec
⢠FLASH programming across the 68HC08âs
full operating supply voltage with no extra
programming voltage
⢠10K write/erase cycles minimum over
temperature
⢠Flexible block protection and security
⢠Cost-effective programming changes and
field software upgrades via in-application
programmability and re-programmability
⢠Reduces production programming costs
through ultra-fast programming
⢠Allows re-programmable battery-powered
applications
⢠Byte-writable for data as well as program
memory
⢠Protects code from unauthorized reading
and to guard against unintentional
erasing/writing of user-programmable
segments of code
CPU08
KBI
256 RAM
TIM
8K FLASH
MON
USB
VREG
BRK
SIM
IRQ
COP
LVI
OSC
PORT A
8
PORT B
8
PORT C
8
PORT D
8
PORT E
5
FULL USB 1.1 SPECIFICATION LOW-SPEED FUNCTIONS
⢠1.5 Mbps data rate
⢠On-chip 3.3V regulator
⢠Endpoint 0 with 8-byte transmit buffer and
8-byte receive buffer
⢠Endpoint 1 with 8-byte transmit buffer
⢠Endpoint 2 with 8-byte transmit buffer and
8-byte receive buffer
⢠Designed to serve as a low-speed (LS) USB
device, in accordance with the Universal
Serial Bus Specification Rev. 1.1
⢠Integrated 3.3V regulator reduces system
cost
MULTIPLE CLOCK OPTIONS
⢠Crystal oscillator
⢠Ceramic oscillator
⢠External clock
⢠RC oscillator
⢠Flexible clock options optimize timing
accuracy with system cost
For More Information On This Product,
Go to: www.freescale.com
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