Datasheet

Electrical parameters STM8L051F3
60/96 DS9178 Rev 4
8.3.4 Clock and timing characteristics
HSE external clock (HSEBYP = 1 in CLK_ECKCR)
Subject to general operating conditions for V
DD
and T
A
.
LSE external clock (LSEBYP=1 in CLK_ECKCR)
Subject to general operating conditions for V
DD
and T
A
.
Table 25. Current consumption under external reset
Symbol Parameter Conditions Typ Unit
I
DD(RST)
Supply current under
external reset
(1)
All pins are externally
tied to V
DD
V
DD
= 1.8 V 48
µAV
DD
= 3 V 76
V
DD
= 3.6 V 91
1. All pins except PA0, PB0 and PB4 are floating under reset. PA0, PB0 and PB4 are configured with pull-up under reset.
Table 26. HSE external clock characteristics
Symbol Parameter Conditions Min Typ Max Unit
f
HSE_ext
External clock source
frequency
(1)
-1-16MHz
V
HSEH
OSC_IN input pin high level
voltage
- 0.7 x V
DD
-V
DD
V
V
HSEL
OSC_IN input pin low level
voltage
-V
SS
- 0.3 x V
DD
C
in(HSE)
OSC_IN input capacitance
(1)
--2.6-pF
I
LEAK_HSE
OSC_IN input leakage current
V
SS
< V
IN
< V
DD
--±1µA
1. Guaranteed by design.
Table 27. LSE external clock characteristics
Symbol Parameter Min Typ Max Unit
f
LSE_ext
External clock source frequency
(1)
- 32.768 - kHz
V
LSEH
(2)
OSC32_IN input pin high level voltage 0.7 x V
DD
-V
DD
V
V
LSEL
(2)
OSC32_IN input pin low level voltage V
SS
- 0.3 x V
DD
C
in(LSE)
OSC32_IN input capacitance
(1)
-0.6-pF
I
LEAK_LSE
OSC32_IN input leakage current - - ±1 µA
1. Guaranteed by design.
2. Guaranteed by characterization results.
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