st62t25cn6 STMicroelectronics, st62t25cn6 Datasheet - Page 73

• Manufacturer Part Number: st62t25cn6
• Description: 8-bit Mcus With A/d Converter, Two Timers, Oscillator Safeguard & Safe Reset
• Manufacturer: STMicroelectronics

11.5 CLOCK AND TIMING CHARACTERISTICS
Subject to general operating conditions for V
11.5.1 General Timings
11.5.2 External Clock Source
Notes:
1. Data based on typical application software.
2. Time measured between interrupt event and interrupt vector fetch. t
Figure 49. Typical Application with an External Clock Source
V
Symbol
Symbol
V
the current instruction execution.
t
c(INST)
OSCINH
OSCINL
t
v(IT)
I
L
V
V
OSCINH
OSCINL
Instruction cycle time
Interrupt reaction time
t
OSC
OSC
OSCx Input leakage current
v(IT)
EXTERNAL
CLOCK SOURCE
IN
IN
= t
input pin high level voltage
input pin low level voltage
c(INST)
Parameter
Parameter
+ 6
Not connected
2)
OSC
OSC
90%
f
f
See
V
DD
CPU
CPU
SS
10%
OUT
IN
, f
=8 MHz
=8 MHz
Figure 49
V
OSC
IN
Conditions
Conditions
V
, and T
DD
A
.
c(INST)
is the number of t
I
L
0.7xV
3.25
9.75
Min
Min
V
2
6
SS
DD
f
OSC
Typ
ST62XX
Typ
6.5
4
CPU
ST6215C/ST6225C
1)
cycles needed to finish
0.3xV
17.875
8.125
Max
Max
V
± 2
11
5
DD
DD
Unit
Unit
t
t
73/105
CPU
CPU
V
A
s
s
1