Part No. Internal
Clock		 VDD System
Clock		 Program
Memory		 Data
Memory		 Data
EEPROM		 I/O RTC Timer
Module		 PFD Comp. Stack Package
HT68F03 4MHz
8MHz
12MHz		 2.2V~
5.5V		 32kHz ~ 20MHz 1Kx14 64x8 64x8 8 v CTM 10-bitx1
STM 10-bitx1		 v 1 4 10MSOP
16NSOP
HT68F04 4MHz
8MHz
12MHz		 2.2V~
5.5V		 32kHz ~ 20MHz 2Kx15 96x8 64x8 8 v CTM 10-bitx1
STM 10-bitx1		 v 1 8 10MSOP
16NSOP

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.