Thanks to its facilites & expertise, Texplained is able to explore and analyse the security of any IC on the market. Here is a bunch of resources that can be useful to chip enthusiasts who want to go deeper into silicon:

• A collection of optical and Electronic images at different magnifications
• Of a great diversity of chips: microcontrollers, FPGA, microprocessors, SoCs
• From the most renowned chip makers: Altera, Atmel, Cypress, Infineon, Microchip, Microsemi, NXP, ST Microelectronics, Texas Instruments, Xilinx….

This is free. Simply name Texplained for any usage other than personal.