str755fvx STMicroelectronics, str755fvx Datasheet - Page 44

• Manufacturer Part Number: str755fvx
• Description: Arm7tdmi-s, 32-bit Mcu With Flash, Smi, 3 Std 16-bit Timers Pwm Timer, Fast 10-bit Adc, I2c, Uart, Ssp, Usb And Can
• Manufacturer: STMicroelectronics

Electrical parameters
44/71
XRTC1 external Clock source
Subject to general operating conditions for V
Table 20.
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)
w(XRTC1L)
V
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
Conditions
XT2
XT1
SS
90%
10%
≤V
Figure 20
IN
≤V
DD_IO
DD_I
(1)
t
w(XT1H)
, and T
0.7xV
I
Min
V
990
L
A
SS
DD_IO
.
t
w(XT1L)
f
OSC4M
STR750
32.768
Typ
0.3xV
V
Max
DD_IO
500
±1
5
DD_IO
STR750F
Unit
kHz
µA
ns
V