Rev. 1.10

�� of �5

���i� 1�� �01�

��-bit �RM Co�tex™-M� MCU

HT��F1�51/51B/5�/5�

Absolute Maximum Ratings

The following table shows the absolute maximum ratings of the device. These are stress ratings

only. Stresses beyond absolute maximum ratings may cause permanent damage to the device. Note

that the device is not guaranteed to operate properly at the maximum ratings. Exposure to the

absolute maximum rating conditions for extended periods may affect device reliability.

Table 3. Absolute Maximum Ratings

Symbol

Parameter

Min

Max

Unit

Exte�na� main su���y vo�tage

V

Exte�na� ana�og su���y vo�tage

V

Exte�na� batte�y su���y vo�tage

V

Exte�na� LDO su���y vo�tage

V

In�ut vo�tage on 5V-to�e�ant I/O

V

In�ut vo�tage on othe� I/O

V

�mbient o�e�ating tem�e�atu�e �ange

-40

+85

°C

Sto�age tem�e�atu�e �ange

-55

+150

°C

Maximum junction tem�e�atu�e

—

1�5

°C

Tota� �owe� dissi�ation

—

500

mW

E�ect�ostatic discha�ge vo�tage (human body mode)

-4000

+4000

V

DC Characteristics

Table 4. DC Operating Conditions

TA = 25°C, unless otherwise specified.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

O�e�ating vo�tage of I/O

—

�.7

�.�

�.6

V

�na�og o�e�ating vo�tage

—

�.7

�.�

�.6

V

O�e�ating vo�tage of Batte�y su���y —

�.7

�.�

�.6

V

LDO o�e�ating vo�tage

—

�.7

�.�

�.6

V

O�e�ating vo�tage of co�e �owe�

—

1.6�

1.8

1.98

V

On-Chip LDO Voltage Regulator Characteristics

Table 5. LDO Characteristics

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

1.71

1.8

1.89

V

Out�ut cu��ent

—

—

�00

m�

External filter capacitor value for

inte�na� co�e �owe� su���y

The ca�acito� va�ue is

de�endent on the co�e �owe�

cu��ent consum�tion

�.�

—

10

μF