Rev. 1.00

3 of 35

May 27, 2011

32-bit ARM Cortex™-M3 MCU

HT32F1251/51B/52/53

I/O Port Characteristics........................................................................................................ 26

ADC Characteristics ............................................................................................................ 28

Operation Amplifier/Comparator Characteristics ................................................................. 29

GPTM Characteristics.......................................................................................................... 29

I2C Characteristics ............................................................................................................... 30

SPI Characteristics .............................................................................................................. 31

5 Package Information ............................................................................................ 33

48-pin LQFP (7mmx7mm) Outline Dimensions ................................................................... 33