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ST90R40
ROMLESS HCMOS MCU WITH EEPROM, RAM AND AID CONVERTER
• Register oriented 8/16 bit CORE with RUN, WFI and HALT modes
• Minimum instruction cycle time:500ns (12M Hz internal)
• ROMiess to allow maximum external memory flexibility
• Internal Memory :
RAM
256 bytes
EEPROM
512 bytes
224 general purpose registers available as
RAM, accumulators or index pointers
(register file)
• 80-pin Plastic Quad Flat Pack Package for ST90R40Q
• 68-lead Plastic Leaded Chip Carrier package for ST90R40C
• DMA controller, Interrupt handler and Serial Peripheral Interface as standard features
• 40 fully programmable 1/0 pins
• Up to 8 external plus 1 non-maskable interrupts
• 16 bit Timer with 8 bit Prescaler, able to be used as a Watchdog Timer
• Two 16 bit Multifunction Timers, each wit