Part No. Internal
Clock		 VDD System
Clock		 Program
Memory		 Data
Memory		 Data
EEPROM		 I/O RTC Timer Module PFD Comp. Stack Package
HT68F03 4kHz
8kHz
12kHz		 2.2V~
5.5V		 32kHz~
20MHz		 1Kx14 64x8 64x8 8 v CTM 10-bitx1
STM 10-bitx1		 v 1 4 10MSOP
HT68F04 4kHz
8kHz
12kHz		 2.2V~
5.5V		 32kHz~
20MHz		 2Kx15 96x8 64x8 8 v CTM 10-bitx1
STM 10-bitx1		 v 1 8 10MSOP
Note: The internal clock in the table is a fully integrated RC oscillator requiring no external components which can be used as the system clock.