ꢃꢅ-bit �RM Coꢁtex™-Mꢃ MCU
HTꢃꢅF1ꢅ51/51B/5ꢅ/5ꢃ
Internal Clock Characteristics
Table 10. High Speed Internal Clock (HSI) Characteristics
T� = ꢅ5°C, unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
High Sꢀeed Inteꢁnaꢂ Osciꢂꢂatoꢁ VDDꢃꢃ = ꢃ.ꢃVꢄ
fHSI
TBD
8
TBD
MHz
Fꢁequency (HSI )
T� = -40°C ~ +85°C
HSI Osciꢂꢂatoꢁ Fꢁequency
accuꢁacy
Factoꢁy-tꢁimmedꢄ
VDDꢃꢃ = ꢃ.ꢃVꢄ T� = ꢅ5°C
�CCHSI
DHSI
-1
ꢃ5
—
—
—
+1
65
—
%
%
HSI Osciꢂꢂatoꢁ Duty cycꢂe
VDDꢃꢃ = ꢃ.ꢃVꢄ fHSI = 8MHz
HSI Osciꢂꢂatoꢁ Oꢀeꢁating
Cuꢁꢁent
IDDHSI
VDDꢃꢃ = ꢃ.ꢃVꢄ fHSI = 8MHz
0.9ꢅ
m�
VDDꢃꢃ = ꢃ.ꢃVꢄ fHSI = 8MHzꢄ
HSIRCBL = 0 (HSI Ready
Counteꢁ Bits Length 7 Bits )
tSUHSI
HSI Osciꢂꢂatoꢁ Staꢁtuꢀ time
—
17
—
μs
NOTE: HSIRCBL field is in PWRCU HSIRCR register
Table 11. Low Speed Internal Clock (LSI) Characteristics
T� = ꢅ5°C, unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Low Sꢀeed Inteꢁnaꢂ Osciꢂꢂatoꢁ VDDꢃꢃ = VB�T = ꢃ.ꢃVꢄ
fLSI
ꢅ5
ꢃꢅ
4ꢃ
kHz
Fꢁequency(LSI)
T� = -40°C ~ +85°C
LSI Osciꢂꢂatoꢁ Oꢀeꢁating
Cuꢁꢁent
VDDꢃꢃ = VB�T = ꢃ.ꢃVꢄ
T� = ꢅ5°C
IDDLSI
tSULSI
—
—
1.0
ꢃ5
ꢅ
μA
VDDꢃꢃ = VB�T = ꢃ.ꢃVꢄ
T� = ꢅ5°C
LSI Osciꢂꢂatoꢁ Staꢁtuꢀ time
—
ms
Rev. 1.10
ꢅ5 of ꢃ5
�ꢀꢁiꢂ 1ꢃꢄ ꢅ01ꢅ