Part No. VDD System
Clock
Program
Memory
Data
Memory
I/O LCD Timer R-F IR
Carrier
PFD Stack Package
16-bit RTC
HT47C06L
1.2V~
2.2V
32768Hz~
128kHz
1Kx16 32x8 8 13x3
14x2
1 -- 1ch -- -- 2 44QFP
HT47R20A-1
HT47C20-1
2.2V~
5.5V
400kHz~
8MHz
2Kx16 64x8 12 20x2
20x3
19x4
1 v 2ch v v 4 64LQFP
Note: 1. Part numbers including a "C" are mask version devices, "R" are OTP devices, while part numbers suffixed with
             an "L" are low voltage mask version devices.
         2. For the low voltage mask version devices, note that the HT47R20A-1 device can be used as corresponding OTP
            devices.