Part No.	Max. Freq.	VDD	Program Memory	Data Memory	Data EEPROM	I/O	A/D	Timer	Comparator	RTC	Interface	Stack	Package
HT66F30	20MHz	2.2V~ 5.5V	2K×14	96×8	64×8	22	12-bit×8	10-bit CTM×1 10-bit ETM×1	2	√	SPI/I^²C×1	4	16NSOP 20SOP 24SOP/SSOP
HT66F40	20MHz	2.2V~ 5.5V	4K×15	192×8	128×8	42	12-bit×8	10-bit CTM×1 10-bit ETM×1 16-bit STM×1	2	√	SPI/I^²C×1	8	24/28SOP/SSOP
HT66F50	20MHz	2.2V~ 5.5V	8K×16	384×8	256×8	42	12-bit×8	10-bit CTM×2 10-bit ETM×1 16-bit STM×1	2	√	SPI/I^²C×1	8	28SOP/SSOP
HT66F30-1	20MHz	2.2V~ 5.5V	2K×16	96×8	64×8	22	12-bit×8	10-bit CTM×1, 10-bit ETM×1	2	√	SPI/I^²C×1	4	16NSOP/SSOP 20SOP/SSOP 24SOP/SSOP

Note: 1. All devices include a fully integrated RC system oscillator.
2. Four I/O lines on each device can be configured as software LCD COM driver pins.

Part No.

Max. Freq.

VDD

Program
Memory

Data
Memory

Data
EEPROM

Stack

I/O

Timer

ADC

PWM

SCOM

Package

HT68F003

8MHz

2.2V~5.5V

1K×14

64×8

32×8

2

14

10-bit STM×1
10-bit PTM×1

--

--

--

16NSOP

HT66F0031

1.8V~5.5V

32×14^#

14

8-bit×1

10-bit×4

8-bit×1

HT66F003

2.2V~5.5V

32×8

14

10-bit STM×1
10-bit PTM×1

12-bit×4

--

HT66F0041

8MHz

1.8V~5.5V

2K×14

64×8

32×14^#

4

18

8-bit×1

10-bit×4

8-bit×1

--

16/20NSOP, 20SSOP

Note: # Emulated EEPROM.

Part No.

Max.
Freq.

VDD

Program
Memory

Data
Memory

Data
EEPROM

Stack

IAP

I/O

Timer

ADC

SCOM/
SSEG*

CMP

RTC

High Current
LED Driver

Inter-
face

Package

HT66F017

20MHz

2.2V~
5.5V

2K×16

128×8

64×8

8

--

14

16-bit CTM×1
16-bit STM×1

12-bit
×4

--

1

--

--

--

16NSOP

HT66F0176

128×8

64×8

22

10-bit PTM×2

12-bit
×8

SCOM×6
SSEG×14

--

√

22

SPI/I^²C×1
UART×1

16/20NSOP
24SOP/SSOP

HT66F0181

8MHz

1.8V~
5.5V

4K×15

128×8

32×15*1

6

--

18

10-bit PTM×1
10-bit STM×1

10-bit
×8

--

--

--

18

--

16/20NSOP
20SOP/SSOP

HT66F0182

2.2V~
5.5V

4K×16

--

12-bit
×8

--

16/20NSOP

HT66F018

20MHz

2.2V~
5.5V

4K×16

192×8

64×8

8

--

18

10-bit PTM×1
16-bit CTM×1
16-bit STM×1

12-bit
×8

1

√

16/20NSOP
20SOP/SSOP
20QFN

HT66F0185

20MHz

4K×16

256×8

128×8

8

--

26

10-bit PTM×1
16-bit CTM×1
16-bit STM×1

12-bit
×8

SCOM×6
SSEG×18

1

√

26

SPI/I^²C×1
UART×1

24/28SOP/SSOP

HT66F019

16MHz

2.2V~
5.5V

8K×16

256×8

64×8

8

--

18

10-bit PTM×1
16-bit CTM×1
16-bit STM×1

12-bit
×8

--

1

√

18

SPI/I^²C×1
UART×1

20NSOP

HT66F0195

512×8

128×8

26

12-bit
×12

SCOM×6
SSEG×18

26

24/28SSOP

Note: *SCOM/SSEG: Software Control LCD Common/Segment.

Part No.

Max. Freq.

VDD

Program
Memory

Data
Memory

Data
EEPROM

I/O

Timer

A/D

PWM

PFD

Stack

Package

HT46F47E

12MHz

2.2V~5.5V

2K×14

64×8

128×8

13

8-bitx1

9-bit×4

8-bit×1

√

6

18SOP
20SSOP

Part No.	Max. Freq.	VDD	ADC	ENOB	Data Rate	PGA	Interface	Package
BH45B1225	4.91MHz	2.4V~5.5V	24-bit×4	19.5	5Hz~1.6kHz	1~128	I^²C×1	8SOP, 16NSOP
BH45B1525	4.91MHz	2.7V~5.5V	24-bit×4	21.3	10Hz~1.28kHz	1~128	SPI×1, I^²C×1	20SSOP

Enhanced 24-Bit A/D PeripheralSee less

Enhanced 24-Bit A/D Peripheral