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MC68HC908RF2 View Datasheet(PDF) - Motorola => Freescale

Part NameDescriptionManufacturer
MC68HC908RF2 high-performance M68HC08 Family of 8-bit microcontroller units Motorola
Motorola => Freescale Motorola
MC68HC908RF2 Datasheet PDF : 254 Pages
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General Description
1.3 Features
Advance Information
Features of the MC68HC908RF2 MCU include:
High-performance M68HC08 architecture
Fully upward-compatible object code with M6805, M146805, and
M68HC05 Families
Maximum internal bus frequency of 4 MHz at 3.3 volts
Maximum internal bus frequency of 2 MHz at 1.8 volts
Internal oscillator requiring no external components:
Software selectable bus frequencies
± 25 percent accuracy with trim capability to ±2 percent
Option to allow use of external clock source or external
crystal/ceramic resonator
2 Kbytes of on-chip FLASH memory
FLASH program memory security(1)
128 bytes of on-chip RAM
16-bit, 2-channel timer interface module (TIM)
12 general-purpose input/output (I/O) ports:
Six shared with keyboard wakeup function
Two shared with the timer module
Port A pins have 3-mA sink capabilities
Low-voltage inhibit (LVI) module:
1.85-V detection forces MCU into reset
2.0-V detection sets indicator flag
6-bit keyboard interrupt with wakeup feature
External asynchronous interrupt pin with internal pullup (IRQ1)
Ultra high frequency (UHF) transmitter
1. No security feature is absolutely secure. However, Motorolas strategy is to make reading or
copying the FLASH difficult for unauthorized users.
General Description
MC68HC908RF2 Rev. 1
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