S6E2H Datasheet, PDF (85/163 Pages) Cypress Semiconductor – 32-bit ARM ® Cortex ® -M4F FM4 Microcontroller

S6E2H Series
13.4.2 Sub Clock Input Characteristics
(VBAT = 2.7V to 5.5V, VSS = 0V)
Parameter
Symbol
Pin
Name
Conditions
Min
Value
Unit
Typ Max
Remarks
Input frequency
Input clock cycle
Input clock pulse
width
1/ tCYLL
tCYLL
-
X0A,
X1A
-
-
-
PWH/tCYLL,
PWL/tCYLL
-
32.76
8
-
kHz
When crystal oscillator is
connected
32
-
100 kHz When using external clock
10
- 31.25 μs When using external clock
45
-
55 % When using external clock
0.8 × VBAT
X0A
VBAT
VBAT
VBAT
VBAT
13.4.3 Built-in CR Oscillation Characteristics
Built-in High-speed CR
Parameter
Symbol
Conditions
Value
Unit
Min Typ Max
(VCC = 2.7V to 5.5V, VSS = 0V)
Remarks
Clock frequency
TJ = -20°C to + 105°C 3.92 4 4.08
fCRH
When trimmed*1
TJ = - 40°C to + 125°C 3.88 4 4.12 MHz
Clock frequency
fCRH
TJ = - 40°C to + 125°C 2.9
4
5
When not trimming
Frequency
stabilization
tCRWT
-
-
-
30
μs *2
time
*1: In the case of using the values in CR trimming area of Flash memory at shipment for frequency/temperature trimming.
*2: This is the time to stabilize the frequency of high-speed CR clock after setting trimming value.
This period is able to use high-speed CR clock as source clock.
Built-in Low-speed CR
Parameter
Symbol
Clock frequency
fCRL
Condition
-
Value
Unit
Min Typ Max
50 100 150
kHz
(VCC = 2.7V to 5.5V, VSS = 0V)
Remarks
Document Number: 001-98943 Rev *C
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