ST72F321J9TCTR STMicroelectronics, ST72F321J9TCTR Datasheet - Page 146

• Manufacturer Part Number: ST72F321J9TCTR
• Description: IC MCU 8BIT 60KB FLASH 44-TQFP
• Manufacturer: STMicroelectronics
• Series: ST7r

Specifications of ST72F321J9TCTR

• Core Processor: ST7
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: I²C, SCI, SPI
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Size: 60KB (60K x 8)
• Program Memory Type: FLASH
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 3.8 V ~ 5.5 V
• Data Converters: A/D 16x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 44-TQFP, 44-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

ST72321Rx ST72321ARx ST72321Jx
12.5 CLOCK AND TIMING CHARACTERISTICS
Subject to general operating conditions for V
12.5.1 General Timings
12.5.2 External Clock Source
Figure 76. 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. Δt
the current instruction execution.
3. Data based on design simulation and/or technology characteristics, not tested in production.
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t
t
Symbol
Symbol
w(OSC1H)
V
w(OSC1L)
V
t
t
t
r(OSC1)
f(OSC1)
c(INST)
OSC1H
OSC1L
t
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
OSC1 Input leakage current
OSC1H
OSC1L
v(IT)
EXTERNAL
CLOCK SOURCE
= Δt
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 76
=8MHz
=8MHz
≤ V
CPU
Conditions
IN
Conditions
≤ V
, and T
DD
t
Not connected internally
w(OSC1H)
A
.
c(INST)
I
is the number of t
L
t
0.7xV
w(OSC1L)
1.25
Min
250
10
2
Min
V
5
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
ns
CPU
μs
μA
ns
V