ST72F321J9T6 STMicroelectronics, ST72F321J9T6 Datasheet - Page 24
ST72F321J9T6
Manufacturer Part Number
ST72F321J9T6
Description
MCU 8BIT 60KB FLASH 44TQFP
Manufacturer
STMicroelectronics
Series
ST7r
Datasheet
1.ST72F321AR7T6.pdf
(193 pages)
Specifications of ST72F321J9T6
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 ~ 85°C
Package / Case
44-TQFP, 44-VQFP
Processor Series
ST72F3x
Core
ST7
Data Bus Width
8 bit
Data Ram Size
2048 B
Interface Type
I2C, SCI, SPI
Maximum Clock Frequency
8 MHz
Number Of Programmable I/os
48
Number Of Timers
5
Operating Supply Voltage
3.8 V to 5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Development Tools By Supplier
ST7F521-IND/USB, ST7232X-EVAL, ST7MDT20-DVP3, ST7MDT20-DVP3, STX-RLINK
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit
For Use With
497-5046 - KIT TOOL FOR ST7/UPSD/STR7 MCU
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Details
Other names
497-4844
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ST72F321J9T6
Manufacturer:
STMicroelectronics
Quantity:
10 000
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ST72321Rx ST72321ARx ST72321Jx
6 SUPPLY, RESET AND CLOCK MANAGEMENT
The device includes a range of utility features for
securing the application in critical situations (for
example in case of a power brown-out), and re-
ducing the number of external components. An
overview is shown in
For more details, refer to dedicated parametric
section.
Main features
■
■
■
■
Figure 11. Clock, Reset and Supply Block Diagram
24/193
– 5 Crystal/Ceramic resonator oscillators
– 1 Internal RC oscillator
– Main supply Low voltage detection (LVD)
– Auxiliary Voltage detector (AVD) with interrupt
Optional PLL for multiplying the frequency by 2
(not to be used with internal RC oscillator)
Reset Sequence Manager (RSM)
Multi-Oscillator Clock Management (MO)
System Integrity Management (SI)
RESET
OSC2
OSC1
capability for monitoring the main supply or
the EVD pin
V
V
EVD
SS
DD
Figure
OSCILLATOR
RESET SEQUENCE
MULTI-
(MO)
MANAGER
(RSM)
11.
f
OSC
(option)
PLL
SICSR
AVD AVD AVD LVD
SYSTEM INTEGRITY MANAGEMENT
S
0
1
IE
6.1 PHASE LOCKED LOOP
If the clock frequency input to the PLL is in the
range 2 to 4 MHz, the PLL can be used to multiply
the frequency by two to obtain an f
MHz. The PLL is enabled by option byte. If the PLL
is disabled, then f
Caution: The PLL is not recommended for appli-
cations where timing accuracy is required. See
“PLL Characteristics” on page 151.
Figure 10. PLL Block Diagram
f
OSC
AVD Interrupt Request
AUXILIARY VOLTAGE
F
LOW VOLTAGE
RF
DETECTOR
DETECTOR
(AVD)
(LVD)
0
PLL x 2
0
/ 2
OSC2 =
0
WDG
f
RF
OSC2
f
OSC
PLL OPTION BIT
/2.
CLOCK (MCC/RTC)
WITH REALTIME
0
1
TIMER (WDG)
CONTROLLER
MAIN CLOCK
WATCHDOG
OSC2
f
OSC2
of 4 to 8
f
CPU
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