ST72F321AR9TA STMicroelectronics, ST72F321AR9TA Datasheet - Page 190

• Manufacturer Part Number: ST72F321AR9TA
• Description: IC MCU 8BIT 60KB FLASH 64-TQFP
• Manufacturer: STMicroelectronics
• Series: ST7r

Specifications of ST72F321AR9TA

• Core Processor: ST7
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: I²C, SCI, SPI
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 48
• 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: 64-TQFP, 64-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

To identify these parts, check the internal sales
type on the box label or the trace code marking on
the package.
Rev
Rev Q
Rev S
Rev 9 (full
spec)
Internal Salestype Trace Code
72F321xxx$A2
72F321xxx$U2
72F321xxx$A8
72F321xxx$U8
72F321xxx$A3
72F321xxx$U3
813xxxQ
813xxxQ
813xxxS
813xxxS
813xxx9
813xxx9
15.4
DEVICES
15.4.1 LVD Operation
Depending on the operating conditions, especially
the V
in some cases the LVD may not start. When this
occurs, the MCU may operate outside the guaran-
teed functional area (see datasheet Figure 76)
without being forced into reset state.
In this case, proper use of the watchdog may
make it possible to recover through a watchdog re-
set and allow normal operations to resume.
Consequently, the LVD function is not guaranteed
in the current silicon revision. For complete securi-
ty, an external reset circuit must be added.
DD
ST72321Rx ST72321ARx ST72321Jx
LIMITATIONS
ramp up speed and ambient temperature,
SPECIFIC
TO
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