STR750FXX STMICROELECTRONICS [STMicroelectronics], STR750FXX Datasheet - Page 45
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STR750FXX
Manufacturer Part Number
STR750FXX
Description
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet
1.STR750FXX.pdf
(81 pages)
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STR750Fxx STR751Fxx STR752Fxx STR755Fxx
XRTC1 external Clock source
Subject to general operating conditions for V
Table 21.
1. Data based on typical application software.
2. Data based on design simulation and/or technology characteristics, not tested in production.
Figure 20. Typical application with an external Clock source
t
t
w(XRTC1H)
V
w(XRTC1L)
Symbol
V
t
t
r(XRTC1)
f(XRTC1)
f
XRTC1H
XRTC1
XRTC1L
I
L
V
V
XT1H
XT1L
External clock source
frequency
XRTC1 input pin high
level voltage
XRTC1 input pin low level
voltage
XRTC1 high or low time
XRTC1 rise or fall time
XRTCx Input leakage
current
XRTC1 external Clock source
EXTERNAL
CLOCK SOURCE
Parameter
t
r(XT1)
T
XT1
hi-Z
(2)
(2)
t
f(XT1)
see
V
O
XT2
XT1
Conditions
90%
SS
10%
≤V
Figure 20
IN
≤V
DD_IO
DD_I
(1)
t
w(XT1H)
, and T
0.7xV
V
I
Min
900
L
A
SS
DD_IO
.
t
w(XT1L)
f
OSC4M
STR750
32.768
Typ
Electrical parameters
0.3xV
V
Max
500
DD_IO
50
±1
DD_IO
Unit
kHz
45/81
µA
ns
V
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