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DS1222 BankSwitch Chip www.dalsemi.com FEATURES Provides bank switching for 16 banks of memory Bank switching is software-controlled by a pattern recognition sequence on four address inputs Automatically sets all 16 banks off on power-up Bank switching logic allows only one bank on at a time Custom
DS1228 DS1228 +5V Powered Dual RS-232 Transmitter/Receiver FEATURES PIN ASSIGNMENT C1+ V+ C1C2+ C2VT2OUT R2IN 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 VCC GND T1OUT C1+ V+ R1IN C1R1OUT C2+ T1IN C2V1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 VCC GND T1OUT R1IN R1OUT T1IN T2IN R2OUT • Operates from a s
DS1225AB/AD 64k Nonvolatile SRAM www.dalsemi.com FEATURES 10 years minimum data retention in the absence of external power Data is automatically protected during power loss Directly replaces 8k x 8 volatile static RAM or EEPROM Unlimited write cycles Low-power CMOS JEDEC standard 28-pin DIP package
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DS1227 DS1227 KickStarter Chip FEATURES • Provides PIN ASSIGNMENT VCCO2 VCCO3 VCCO1 PWRON VDCO 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 VCCO4 MODE4 SENSE INT/ACK OSCEXT BOOST ON1 ON4 RXIN RXOUT step-up regulation and microenergy management for battery-operated s
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