ST TS321 is a single 12 MHz R2R opamp in SOT23-5 package with low noise and low distortion.
Die size 1079x799 µm.

ST TS321 is a single opamp in SOT23-5 package designed to match and exceed industry standard LM358A and LM324 opamps.
Die size 1270x735 µm.

Giga Devices GD32F103CBT6 really surprised us:



Giga Devices was a serial flash manufacturer for quite some time. When they launched their ARM Cortex M3 lineup (with some level of binary compatibility to STM32) - instead of going conventional route of making numerous dies with different flash and SRAM sizes they went for SRAM&logic die and separate serial flash die. How this could work fast enough? Keep reading :-) At least ESP8266 already taught us that executing code from serial flash and reaching acceptable speed is not impossible.

Use of serial flash allows Giga Devices to increase maximum flash size in their microcontrollers quite a bit (currently they have up to 3MiB) and to save quite a bit on ARM licensing fees (if they are paying "per die design").




Die has 110 pads, 9 of which are used by a flash die. GD32F103CBT6 is in TQFP48 package - which again suggests that this die is universal and also used in higher pin count models. Die size 2889x3039 µm.

Logo:


ADC switched capacitor bank:



After etching to poly level we clearly see that there is no flash on the die:



SRAM sizes are 32KiB in each largest block (128 KiB total) - stores code, which means first 128KiB could be accessed faster than typical flash. GD32 chips with 20Kb of SRAM or less have no more than 128KiB of flash, so all flash content is served from SRAM. This might also mean that startup time is slower than one would expect. With this SRAM mirroring it is not surprising that GD32 is beating STM32 in performance even on the same frequency.

2 smaller blocks are 10KiB each and are likely to be user-accessible SRAM.
4 smallest blocks closest to the synthesized logic are 512B each.

SRAM has cell size 2.04 µm

Die size 1339x860 µm.

hotlegmeme:

eto86:

Dallas Semiconductor DS1000Z - 5 tap delay line. Fuses, fuses everywhere!
Die size 2074x1768 µm.

dayshavou:

sweetchildofdixie: