32-bit ARM Cortexâ„¢-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
Rev. 1.10
3 of 35
April 13, 2012