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ST72324BJ2 Datasheet(PDF) 144 Page - STMicroelectronics

Part # ST72324BJ2
Description  8-bit MCU, 3.8 to 5.5 V operating range with 8 to 32 Kbyte Flash/ROM, 10-bit ADC, 4 timers, SPI, SCI
PDF  188 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST72324BJ2 Datasheet(HTML) 144 Page - STMicroelectronics

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Electrical characteristics
ST72324B
144/188
12.6
Clock and timing characteristics
Subject to general operating conditions for VDD, fCPU, and TA.
12.6.1
General timings
12.6.2
External clock source
Figure 65.
Typical application with an external clock source
Table 92.
General timings
Symbol
Parameter
Conditions
Min
Typ(1)
1.
Data based on typical application software.
Max
Unit
tc(INST) Instruction cycle time
23
12
tCPU
fCPU = 8 MHz
250
375
1500
ns
tv(IT)
Interrupt reaction time tv(IT) = ∆tc(INST) + 10
(2)
2.
Time measured between interrupt event and interrupt vector fetch.
∆tc(INST) is the number of tCPU cycles
needed to finish the current instruction execution.
10
22
tCPU
fCPU =8MHz 1.25
2.75
µs
Table 93.
External clock source
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VOSC1H OSC1 input pin high level voltage
See Figure 65.
VDD-1
VDD
V
VOSC1L
OSC1 input pin low level voltage
VSS
VSS+1
tw(OSC1H)
tw(OSC1L)
OSC1 high or low time(1)
1.
Data based on design simulation and/or technology characteristics, not tested in production.
5
ns
tr(OSC1)
tf(OSC1)
OSC1 rise or fall time(1)
15
Ilkg
OSC1 input leakage current
VSS < VIN < VDD
±1
µA
OSC1
OSC2
fOSC
External
ST72XXX
clock source
Not connected internally
VOSC1L
VOSC1H
tr(OSC1)
tf(OSC1)
tw(OSC1H)
tw(OSC1L)
Ilkg
90%
10%



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