Part No. VDD System
Clock
Program
Memory
Data
Memory
I/O Timer Interrupt PFD UART Stack Package
8-bit 16-bit RTC Ext. Int.
HT48R10A-1
HT48C10-1
2.2V~
5.5V
400kHz~
8MHz
1Kx14 64x8 21 1 -- v 1 1 v -- 4 24SKDIP/SOP
HT48R30A-1
HT48C30-1
2.2V~
5.5V
400kHz~
8MHz
2Kx14 96x8 25 1 -- v 1 1 v -- 4 24SKDIP/SOP,
28SKDIP/SOP
HT48R50A-1
HT48C50-1
2.2V~
5.5V
400kHz~
8MHz
4Kx15 160x8 35 1 1 v 1 2 v -- 6 28SKDIP/SOP,
48SSOP
HT48R502 2.2V~
5.5V
400kHz~
8MHz
4Kx15 224x8 56 -- 2 v 1 2 v -- 16 48SSOP,
64LQFP
HT48R70A-1
HT48C70-1
2.2V~
5.5V
400kHz~
8MHz
8Kx16 224x8 56 -- 2 v 1 2 v -- 16 48SSOP,
64LQFP
HT48RU80
HT48CU80
2.2V~
5.5V
400kHz~
8MHz
16Kx16 576x8 56 1 2 v 2 4 v v 16 48SSOP,
64LQFP

Note: 1. Part Numbers including "C" are mask version devices while "R" are OTP devices.
        2. The RTC is available when the internal RC oscillator is selected as the system clock.