Part No. Internal
Clock		 VDD System
Clock		 Program
Memory		 Data
Memory		 I/O Timer Interface A/D D/A PWM R-Type
LCD		 PFD Stack Package
8-bit 16-bit RTC
HT56R22
4MHz
8MHz
12MHz
2.2V~
5.5V
400kHz~
12MHz or
32768Hz
2Kx14
128x8
22
2
--
v
SPI/I2C,
SPI
12-bitx8
12-bitx1
12-bitx3
4COM
v
6
16DIP/NSOP/SSOP,
20DIP/SOP/SSOP,
24SKDIP/SOP/SSOP
HT56R23
4MHz
8MHz
12MHz
2.2V~
5.5V
400kHz~
12MHz or
32768Hz
4Kx15
256x8
42
2
1
v
SPI/I2C,
SPI
12-bitx8
12-bitx1
12-bitx4
4COM
v
12
28SKDIP/SOP/SSOP,
44QFP
HT56R24
4MHz
8MHz
12MHz
2.2V~
5.5V
400kHz~
12MHz or
32768Hz
8Kx16
640x8
42
2
1
v
SPI/I2C,
SPI
12-bitx8
12-bitx1
12-bitx4
4COM
v
12
28SKDIP/SOP/SSOP,
44QFP
HT56R25
4MHz
8MHz
12MHz
2.2V~
5.5V
400kHz~
12MHz or
32768Hz
16Kx16
1152x8
50
3
1
v
SPI/I2C,
SPI
12-bitx8
12-bitx1
12-bitx4
4COM
v
12
28SKDIP/SOP
28SSOP(209mil)
44/52QFP
HT56R26
4MHz
8MHz
12MHz
2.2V~
5.5V
400kHz~
12MHz or
32768Hz
32kx16
2304x8
50
3
1
v
SPI/I2C,
SPI
12-bitx8
12-bitx1
12-bitx4
4COM
v
12
28SKDIP/SOP
28SSOP(209mil)
44/52QFP
Note: These devices are only available in OTP versions.