Rev. 1.10

� of �5

���i� 1�� �01�

��-bit �RM Co�tex™-M� MCU

HT��F1�51/51B/5�/5�

Table of Contents

1 General Description................................................................................................ 6

2 Features................................................................................................................... 7

Co�e ....................................................................................................................................... 7

On-chi� Memo�y .................................................................................................................... 7

F�ash Memo�y Cont�o��e� ....................................................................................................... 8

Reset Cont�o� Unit ................................................................................................................. 8

C�ock Cont�o� Unit.................................................................................................................. 8

Powe� Management............................................................................................................... 9

�na�og to Digita� Conve�te�.................................................................................................... 9

Analog Operational Amplifier/Comparator ............................................................................. 9

I/O Po�ts............................................................................................................................... 10

PWM Gene�ation and Ca�tu�e Time�s................................................................................. 10

Watchdog Time�................................................................................................................... 11

Rea� Time C�ock................................................................................................................... 11

Inte�-integ�ated Ci�cuit (I�C) ................................................................................................. 1�

Se�ia� Pe�i�he�a� Inte�face (SPI) .......................................................................................... 1�

Unive�sa� Synch�onous �synch�onous Receive� T�ansmitte� (US�RT)............................... 1�

Debug Su��o�t..................................................................................................................... 1�

Package and O�e�ation Tem�e�atu�e.................................................................................. 1�

3 Overview................................................................................................................ 14

Device Info�mation............................................................................................................... 14

B�ock Diag�am ..................................................................................................................... 15

Memo�y Ma�........................................................................................................................ 16

C�ock St�uctu�e .................................................................................................................... 17

Pin �ssignment .................................................................................................................... 18

4 Electrical Characteristics..................................................................................... 22

�bso�ute Maximum Ratings ................................................................................................. ��

DC Cha�acte�istics............................................................................................................... ��

On-Chi� LDO Vo�tage Regu�ato� Cha�acte�istics................................................................. ��

Powe� Consum�tion ............................................................................................................ ��

Reset and Su���y Monito� Cha�acte�istics........................................................................... ��

Exte�na� C�ock Cha�acte�istics............................................................................................. �4

Inte�na� C�ock Cha�acte�istics .............................................................................................. �5

PLL Cha�acte�istics.............................................................................................................. �6

Memo�y Cha�acte�istics ....................................................................................................... �6