STEVAL-ISQ002V1 STMicroelectronics, STEVAL-ISQ002V1 Datasheet - Page 135

• Manufacturer Part Number: STEVAL-ISQ002V1
• Description: BOARD EVAL BASED ON ST72264G1
• Manufacturer: STMicroelectronics

Specifications of STEVAL-ISQ002V1

• Main Purpose: Interface, PMBus
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: ST72F264
• Primary Attributes: The PMBus™ Interface Using the ST7 I2C Peripheral
• Secondary Attributes: Firmware in C Language
• Product: Power Management Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-6423

13.5 CLOCK AND TIMING CHARACTERISTICS
Subject to general operating conditions for V
13.5.1 General Timings
13.5.2 External Clock Source
Figure 70. 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.
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
≤V
Figure 70
=8MHz
=8MHz
OSC
IN
Conditions
Conditions
≤V
, and T
DD
t
Not connected internally
w(OSC1H)
A
ST72260Gx, ST72262Gx, ST72264Gx
.
c(INST)
I
is the number of t
L
t
0.7xV
w(OSC1L)
1.25
Min
250
10
2
Min
V
15
SS
f
DD
OSC
Typ
ST72XXX
375
3
Typ
CPU
1)
cycles needed to finish
0.3xV
1500
Max
2.75
Max
12
22
V
±1
15
DD
DD
135/172
Unit
Unit
t
t
CPU
CPU
ns
µs
µA
ns
V