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ST90R40 - ROMLESS HCMOS MCU

General Description

Pin Name 1 AVss 2 AVss 3 NC 4 P44/AIN4 5 P57 6 P56 7 P55 8 P54 9 INT7 10 INTO 11 P53 12 NC 13 P52 14 P51 15 P50 16 OSCOUT 17 Vss 18 Vss 19 NC 20 OSCIN 21 RESET 22 P37/T10UTB 23 P36/T11NB 24 P35/T10UTA Pin Name 25 P34/T11NA 26 P33fTOOUTB 27 P32fTOINB 28 P31fTOOUTA 29 P30/P/DfTOINA 30 A15 31 A14 32

Key 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 with an 8 bit prescaler and 13 operating modes.
  • 8 channel 8 bit Analog to Digital Converter, with Analog Watchdogs and external references.
  • Serial Communications Interface with asynchronous and synchronous capability.
  • Rich Instruction Set.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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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