LCD Type USB MCU(USB 1.1 Low Speed)
| Part No. | VDD | System Clock | Program Memory | Data Memory | I/O | LCD | Timer 8-bit | Timer 16-bit | Timer RTC | Interrupt Ext. | Interrupt Int. | End Points | Stack | Package |
| HT49RB50* | 4.4V-5.5V | 6MHz or 12MHz | 4Kx15 | 160x8 | 24 | 33x3 or 32x4 | 1 | 1 | √ | 2 | 4 | 4 | 8 | 56SSOP,100QFP |
| HT49RB70* | 4.4V-5.5V | 6MHz or 12MHz | 8Kx16 | 208x8 | 24 | 41x3 or 40x4 | - | 2 | √ | 2 | 4 | 4 | 16 | 56SSOP,100QFP |