xc52 online tutorial issi micro ports uarts tmr i2c iram ocprg ocram a/d d/a wd clk 80c31 4 1 2 - 128 - - - - - - 80c51 4 1 2 - 128 r=4k - - - - - 80c32 4 1 3 - 256 - - - - - - 80c52 4 1 3 - 256 r=8k - - - - - okidata msm80c48/49/50 msm80c154s/83c154s msm85c154hvs triscend corporation micro ports uarts tmr i2c iram ocprg ocram a/d d/a wd clk te505 12 1 3 - 256 - sr=8kx8 - - yes - te512 15 1 3 - 256 - sr=16kx8 - - yes - te520 31 1 3 - 256 - sr=40kx8 - - yes - te532 39 1 3 - 256 - sr=64kx8 - - y