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HT66F40 on a board, in 3D

HT66F40

Holtek Semicon

12bit 2.2V~5.5V 4KB FLASH Others LQFP-44(10x10) Microcontrollers (MCU/MPU/SOC) ROHS

Extended
DatasheetJLCPCBLCSCholtek-semicon/HT66F40
Category
Microcontroller Units (MCUs, MPUs, SOCs)
Package
LQFP-44(10x10)
Pins
44

Overview

The HT66F40 is a microcontroller Unit made by Holtek Semicon in a LQFP-44(10x10) package with 44 pins. 12bit 2.2V~5.5V 4KB FLASH Others LQFP-44(10x10) Microcontrollers (MCU/MPU/SOC) ROHS.

PCBKit's library has its KiCad symbol (EasyEDA_Cloud:HT66F40, from EasyEDA) and its footprint (Package_QFP:LQFP-44_10x10mm_P0.8mm, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C189815).

Symbol

PB5/SCS#/VREF1PA7/SCK/SCL/AN72PA6/SDI/SDA/AN63PA5/C1X/SDO/AN54PA4/INT1/TCK1/AN45PA3/INTO/CO-/AN36PA2/TCKO/CO+/AN27PA1/TP1A/AN18PAO/COX/TPO_O/ANO9PF1/[C1X]10PF0/[C0X]11PE7/[INT1]12PE6/[INTO]13VSS&AVSS14PB4/XT215PB3/XT116PB2/0SC217PB1/0SC118VDD&AVDD19PB0/RES#20PE521PE4/[TP1B_2]22PC1/TP1B_1/SCOM123PCO/TP1B_O/SCOMO024PC7/[TP1A]/SCOM325PC6/[TPO_O]/SCOM226PE327PE228PE129PE030PD5/[TP0_1]31PD4/[TP2_1]32PD3/[TCK1]/[SDO]33PD2/[TCKO]/[SDISDA]34PD1/[TP2_O]/[SDO]/[SCK/SCL]35PDO/[TCK2]/[SCSC#]36PTC5/[INT1]/TP0_1/TP1B_2/[PCK]37PC4/[INTO]/[PINT#]/TP2_138PC3/PINT#/TP2_O/C1-39PC2/TCK2/PCK/C1+40PD7/[SCS#]41PD6/[SCK/SCL]42PB7/[SDI/SDA]43PB6/[SDO]44
EasyEDA_Cloud:HT66F40From EasyEDA

Footprint

1234567891011121314151617181920212223242526272829303132333435363738394041424344
Package_QFP:LQFP-44_10x10mm_P0.8mmFrom KiCad's library

Parameters

5
ADC (Bit)
12bit
CPU Core
Others
Program Memory Type
FLASH
Program Storage Size
4KB
Voltage - Supply
2.2V~5.5V

Order codes

1

Pinout

44
The pins of the HT66F40
PinNameType
1PB5/SCS#/VREFUnspecified
2PA7/SCK/SCL/AN7Unspecified
3PA6/SDI/SDA/AN6Unspecified
4PA5/C1X/SDO/AN5Unspecified
5PA4/INT1/TCK1/AN4Unspecified
6PA3/INTO/CO-/AN3Unspecified
7PA2/TCKO/CO+/AN2Unspecified
8PA1/TP1A/AN1Unspecified
9PAO/COX/TPO_O/ANOUnspecified
10PF1/[C1X]Unspecified
11PF0/[C0X]Unspecified
12PE7/[INT1]Unspecified
13PE6/[INTO]Unspecified
14VSS&AVSSUnspecified
15PB4/XT2Unspecified
16PB3/XT1Unspecified
17PB2/0SC2Unspecified
18PB1/0SC1Unspecified
19VDD&AVDDUnspecified
20PB0/RES#Unspecified
21PE5Unspecified
22PE4/[TP1B_2]Unspecified
23PC1/TP1B_1/SCOM1Unspecified
24PCO/TP1B_O/SCOMO0Unspecified
25PC7/[TP1A]/SCOM3Unspecified
26PC6/[TPO_O]/SCOM2Unspecified
27PE3Unspecified
28PE2Unspecified
29PE1Unspecified
30PE0Unspecified
31PD5/[TP0_1]Unspecified
32PD4/[TP2_1]Unspecified
33PD3/[TCK1]/[SDO]Unspecified
34PD2/[TCKO]/[SDISDA]Unspecified
35PD1/[TP2_O]/[SDO]/[SCK/SCL]Unspecified
36PDO/[TCK2]/[SCSC#]Unspecified
37PTC5/[INT1]/TP0_1/TP1B_2/[PCK]Unspecified
38PC4/[INTO]/[PINT#]/TP2_1Unspecified
39PC3/PINT#/TP2_O/C1-Unspecified
40PC2/TCK2/PCK/C1+Unspecified
41PD7/[SCS#]Unspecified
42PD6/[SCK/SCL]Unspecified
43PB7/[SDI/SDA]Unspecified
44PB6/[SDO]Unspecified

Show this part on your page

A live frame, for any web page
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A picture
<img src="https://pcbkit.io/embed/parts/holtek-semicon/HT66F40.jpg" alt="HT66F40" width="1200" height="900">
A picture that opens the part, for a README
[![HT66F40](https://pcbkit.io/embed/parts/holtek-semicon/HT66F40.jpg?size=s)](https://pcbkit.io/parts/holtek-semicon/HT66F40)

Questions

Is there a KiCad symbol and footprint for the HT66F40?

Yes. The symbol is EasyEDA_Cloud:HT66F40 and the footprint Package_QFP:LQFP-44_10x10mm_P0.8mm, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the HT66F40?

LQFP-44(10x10), with 44 pins. Its footprint is drawn on this page.

Where is the HT66F40 datasheet?

Holtek Semicon publishes it: the Datasheet link on this page opens it.

Where can I order the HT66F40?

JLCPCB lists it as part C189815, with 0 in stock; the sellers' links on this page open their listings.

What can replace the HT66F40?

Parts like it in the library: the HC89S105AS8T7CM by Shanghai Holychip Elec, the AT89S52-24AU by Microchip Technology, the PIC16F884-I/PT by Microchip Technology and the PIC18LF44K22-I/PT by Microchip Technology. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Parts like it

8