ST72F264G2M6 STMicroelectronics, ST72F264G2M6 Datasheet - Page 20

• Manufacturer Part Number: ST72F264G2M6
• Description: IC MCU 8BIT 8K 28 SOIC
• Manufacturer: STMicroelectronics
• Series: ST7r

Specifications of ST72F264G2M6

• Core Processor: ST7
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: I²C, SCI, SPI
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 22
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 6x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-SOIC (7.5mm Width)
• Processor Series: ST72F2x
• Core: ST7
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Interface Type: I2C/SCI/SPI
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 22
• Number Of Timers: 3
• Operating Supply Voltage: 2.7 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Development Tools By Supplier: ST7F264-IND/USB, ST72F34X-SK/RAIS, ST7MDT10-DVP3, ST7MDT10-EMU3, STX-RLINK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 6-ch x 10-bit
• Controller Family/series: ST7
• No. Of I/o's: 22
• Ram Memory Size: 256Byte
• Cpu Speed: 8MHz
• No. Of Timers: 2
• Embedded Interface Type: I2C, SCI, SPI
• Rohs Compliant: Yes
• For Use With: 497-6423 - BOARD EVAL BASED ON ST72264G1497-5046 - KIT TOOL FOR ST7/UPSD/STR7 MCU
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 497-2106-5

ST72260Gx, ST72262Gx, ST72264Gx
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 10. Clock, Reset and Supply Block Diagram
20/172
RESET
OSC2
OSC1
V
V
– 4 Crystal/Ceramic resonator oscillators
– 1 Internal RC oscillator
– Main supply Low Voltage Detector (LVD)
– Auxiliary Voltage Detector (AVD) with inter-
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)
SS
DD
rupt capability for monitoring the main supply
OSCILLATOR
RESET SEQUENCE
MULTI-
(MO)
MANAGER
(RSM)
Figure
f
OSC
10.
(option)
PLL
SYSTEM INTEGRITY MANAGEMENT
SICSR
0
AVD AVD LVD
IE
AVD Interrupt Request
AUXILIARY VOLTAGE
F
LOW VOLTAGE
6.1 PHASE LOCKED LOOP
If the clock frequency input to the PLL is in the 2 to
4 MHz range, the PLL can be used to multiply the
frequency by two to obtain an f
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 139.
Figure 9. PLL Block Diagram
RF
DETECTOR
DETECTOR
f
OSC
(AVD)
(LVD)
0
0
0
PLL x 2
WDG
f
OSC2 =
OSC2
/ 2
RF
CLOCK (MCC/RTC)
f
OSC
WITH REALTIME
MISCR1 Register
TIMER (WDG)
CONTROLLER
MAIN CLOCK
SLOW MODE
WATCHDOG
PLL OPTION BIT
SELECTION
/2.
OSC2
0
1
of 4 to 8 MHz.
f
f
OSC2
to CPU
and
Peripherals
CPU