Rev. 1.00

4 of 35

May 27, 2011

32-bit ARM Cortex™-M3 MCU

HT32F1251/51B/52/53

List of Tables

Table 1. HT32F125x Series Features and Peripheral List ..................................................................... 14

Table 2. HT32F125x Pin Descriptions ................................................................................................... 20

Table 3. Absolute Maximum Ratings...................................................................................................... 22

Table 4. DC Operating Conditions ......................................................................................................... 22

Table 5. LDO Characteristics ................................................................................................................. 22

Table 6. Power Consumption Characteristics ........................................................................................ 23

Table 7. LVD/BOD Characteristics......................................................................................................... 23

Table 8. High Speed External Clock (HSE) Characteristics................................................................... 24

Table 9. Low Speed External Clock (LSE) Characteristics .................................................................... 24

Table 10. High Speed Internal Clock (HSI) Characteristics ................................................................... 25

Table 11. Low Speed Internal Clock (LSI) Characteristics..................................................................... 25

Table 12. PLL Characteristics ................................................................................................................ 26

Table 13. Flash Memory Characteristics................................................................................................ 26

Table 14. I/O Port Characteristics .......................................................................................................... 26

Table 15. ADC Characteristics ............................................................................................................... 28

Table 16. OPA/CMP Characteristics ...................................................................................................... 29

Table 17. GPTM Characteristics ............................................................................................................ 29

Table 18. I2C Characteristics.................................................................................................................. 30

Table 19. SPI Characteristics................................................................................................................. 31