Part No.

 Internal
Clock		 VDD System
Clock 		Program
Memory 		Data
Memory 		I/O 8-bit
Timer 		Interrupt PFD Stack Package
Ext. Int.
HT48R01A1
HT48R01A2
HT48R01A3 		4MHz
8MHz
12MHz		 2.2V~5.5V 400kHz~12MHz 1Kx14 64x8 8 1 1 1 v 4 10MSOP

HT48R02-1
HT48R02-2
HT48R02-3

 4MHz
8MHz
12MHz		 2.2V~5.5V 400kHz~12MHz  2Kx14 96x8 8 2 1 2 v 6 10MSOP
HT48R03-1
HT48R03-2
HT48R03-3 		4MHz
8MHz
12MHz		 2.2V~5.5V 400kHz~12MHz 4Kx15 160x8 8 2 1 2 v 8 10MSOP
Note: 1.These devices are only available in OTP versions.
         2.The internal clock in the table is a fully integrated RC oscillator requiring no external components which can be
            used as the system clock.