ST72334J4 STMicroelectronics, ST72334J4 Datasheet - Page 116
ST72334J4
Manufacturer Part Number
ST72334J4
Description
8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY,ADC, 16-BIT TIMERS, SPI, SCI INTERFACES
Manufacturer
STMicroelectronics
Datasheet
1.ST72124J2.pdf
(153 pages)
Specifications of ST72334J4
Clock Sources
crystal/ceramic resonator oscillators or RC oscillators, external clock, backup Clock Security System
4 Power Saving Modes
Halt, Active-Halt, Wait and Slow
Two 16-bit Timers With
2 input captures (only one on timer A), 2 output compares (only one on timer A), External clock input on timer A, PWM and Pulse generator modes
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ST72334J/N, ST72314J/N, ST72124J
16.5 CLOCK AND TIMING CHARACTERISTICS
Subject to general operating conditions for V
16.5.1 General Timings
16.5.2 External Clock Source
Figure 67. Typical Application with an External Clock Source
Notes:
1. Data based on typical application software.
2. Time measured between interrupt event and interrupt vector fetch. t
the current instruction execution.
3. Data based on design simulation and/or technology characteristics, not tested in production.
116/153
t
t
Symbol
Symbol
w(OSC1H)
V
w(OSC1L)
V
t
t
t
r(OSC1)
f(OSC1)
c(INST)
OSC1H
t
OSC1L
v(IT)
I
L
V
V
Instruction cycle time
Interrupt reaction time
t
OSC1 input pin high level voltage
OSC1 input pin low level voltage
OSC1 high or low time
OSC1 rise or fall time
OSCx Input leakage current
OSC1H
OSC1L
v(IT)
EXTERNAL
CLOCK SOURCE
= t
c(INST)
Parameter
Parameter
+ 10
t
r(OSC1)
3)
2)
3)
t
f(OSC1)
OSC2
OSC1
90%
f
f
see
V
DD
CPU
CPU
SS
10%
, f
Figure 67
=8MHz
=8MHz
V
OSC
IN
Conditions
Conditions
, and T
V
DD
t
Not connected internally
w(OSC1H)
A
.
c(INST)
I
is the number of t
L
t
w(OSC1L)
1.25
0.7xV
Min
250
10
2
Min
V
15
SS
f
DD
OSC
Typ
ST72XXX
375
Typ
3
CPU
1)
cycles needed to finish
0.3xV
1500
Max
2.75
Max
12
22
V
15
±1
DD
DD
Unit
Unit
t
t
CPU
CPU
ns
ns
V
s
A
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