Selection Guide

Most features are common to all devices, the main feature distinguishing them are Memory capacity, A/D Converter,

Timer Module types and stack capacity. The following table summarises the main features of each device.

Part No.

VDD

Program

Memory

Data

Memory

Data

EEPROM

I/O

Ext.

Int.

Timer

Module

Interface

(SPI/I

USB

Stack

Package

HT66FB30

2.2V~

5.5V

2K

´14

96

´864´816

2

10-bit CTM

´1,

10-bit ETM

´1

ÖÖ

4

28SKDIP/SOP/SSOP

HT66FB40

2.2V~

5.5V

4K

´15

192

´8

128

´833

2

10-bit CTM

´1,

10-bit ETM

´1,

10-bit STM

´1

ÖÖ

8

44QFP/LQFP

48QFN

HT66FB50

2.2V~

5.5V

8K

´16

384

´8

256

´834

2

10-bit CTM

´2,

10-bit ETM

´1,

10-bit STM

´1

ÖÖ

8

44QFP/LQFP

48QFN

HT66FB60

2.2V~

5.5V

12K

´16

576

´8

256

´839

4

10-bit CTM

´2,

10-bit ETM

´1,

10-bit STM

´1

ÖÖ

8

44/52QFP

40/48QFN

Note:

As devices exist in more than one package format, the table reflects the situation for the package with the most

pins.

HT66FB30/HT66FB40/HT66FB50/HT66FB60

Rev. 1.10

2

June 4, 2010

General Description

The HT66FBx0 series of devices are Flash Memory A/D

type 8-bit high performance RISC architecture

microcontrollers with a USB interface. Offering users

the convenience of Flash Memory multi-programming

features, these devices also include a wide range of

functions and features. Other memory includes an area

of RAM Data Memory as well as an area of EEPROM

memory for storage of non-volatile data such as serial

numbers, calibration data etc.

Analog features include a multi-channel 12-bit A/D con-

verter and dual comparator functions. Multiple and ex-

tremely flexible Timer Modules provide timing, pulse

generation and PWM generation functions. Communi-

cation with the outside world is catered for by including

fully integrated SPI or I

2

C interface functions, two popu-

lar interfaces which provide designers with a means of

easy communication with external peripheral hardware.

Protective features such as an internal Watchdog Timer,

Low Voltage Reset and Low Voltage Detector coupled

with excellent noise immunity and ESD protection en-

sure that reliable operation is maintained in hostile elec-

trical environments.

A full choice of HXT, LXT, ERC, HIRC and LIRC oscilla-

tor functions are provided including a fully integrated

system oscillator which requires no external compo-

nents for its implementation. The ability to operate and

switch dynamically between a range of operating modes

using different clock sources gives users the ability to

optimise microcontroller operation and minimize power

consumption.

The device contains a single USB Full-speed interface

to allow data communication with an external USB host

controller. It is particularly suitable for applications which

require data communication between PCs and periph-

eral USB hardware.

An extensive choice of oscillator functions is provided

including a fully integrated system oscillator which re-

quires no external components for its implementation.

The ability to operate and switch dynamically between a

range of operating modes using different clock sources

gives users the ability to optimise microcontroller opera-

tion and minimise power consumption. The devices also

include flexible I/O programming features, Time-Base

functions and a range of other features.