ST72321R9-Auto STMicroelectronics, ST72321R9-Auto Datasheet - Page 195

• Manufacturer Part Number: ST72321R9-Auto
• Description: 8-bit MCU for automotive with 60 Kbyte Flash, 10-bit ADC, timers, SPI, SCI and I2C interfaces
• Manufacturer: STMicroelectronics

Specifications of ST72321R9-Auto

• Hdflash Endurance: 100 cycles, data retention 20 years
• Clock Sources: crystal/ceramic resonator oscillators, internal RC oscillator and bypass for external clock
• 4 Power Saving Modes: Halt, Active Halt, Wait and Slow

ST72321xx-Auto
19.5
19.5.1
19.5.2
Clock and timing characteristics
Subject to general operating conditions for V
General timings
Table 114. General timings
1. Data based on typical application software.
2. Time measured between interrupt event and interrupt vector fetch. t
External clock source
Table 115. External clock source
1. Data based on design simulation and/or technology characteristics, not tested in production.
Figure 78. Typical application with an external clock source
Symbol
t
t
t
Symbol
w(OSC1H)
V
V
V
w(OSC1L)
V
t
t
c(INST)
r(OSC1)
f(OSC1)
t
OSC1H
OSC1L
OSC1H
v(IT)
needed to finish the current instruction execution.
OSC1L
I
lkg
EXTERNAL
CLOCK SOURCE
Instruction cycle time
Interrupt reaction time
t
v(IT)
OSC1 input pin high level voltage
OSC1 input pin low level voltage
OSC1 high or low time
OSC1 rise or fall time
OSC1 input leakage current
= t
t
r(OSC1)
c(INST)
Parameter
Parameter
+ 10
(2)
t
Doc ID 13829 Rev 1
f(OSC1)
(1)
(1)
OSC2
OSC1
90%
10%
f
f
V
CPU
CPU
Conditions
See
SS
DD
Conditions
, f
< V
= 8 MHz
= 8 MHz
t
Not connected internally
Figure 78
w(OSC1H)
CPU
IN
< V
, and T
DD
I
lkg
c(INST)
A
0.7xV
.
t
1.25
w(OSC1L)
Min
250
Min
V
10
2
5
SS
is the number of t
Electrical characteristics
DD
f
OSC
Typ
375
ST72XXX
Typ
3
(1)
1500
0.3xV
Max
2.75
CPU
12
22
Max
V
15
±1
DD
cycles
DD
195/243
Unit
t
t
CPU
CPU
ns
µs
Unit
µA
ns
V