I/O Type MCU Component,cost low and high quality,high performance, I/O Type MCU (2600 High EFT Series) Component,cost low and high quality,The specification as below Part No. 4K-Mask256837--211-3/3QFP44Mask Version 1K-OTP48414--1---1/1PDIP18/SOP18/SSOP20General I/O 1K-OTP48415--21--2/1PDIP18/SOP18/SSOP201T,General I/O,High EFT 4K-OTP128816--21--2/2PDIP20/SOP20/SSOP201T,General I/O,High EFT 4K- ...