ST72F321AR9TA STMicroelectronics, ST72F321AR9TA Datasheet - Page 175

• 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: -

14 ST72321 DEVICE CONFIGURATION AND ORDERING INFORMATION
Each device is available for production in user pro-
grammable versions (FLASH) as well as in factory
coded versions (ROM/FASTROM).
ST72321 devices are ROM versions. ST72P321
devices are Factory Advanced Service Technique
ROM (FASTROM) versions: they are factory-pro-
grammed HDFlash devices. FLASH devices are
14.1 FLASH OPTION BYTES
The option bytes allow the hardware configuration
of the microcontroller to be selected. They have no
address in the memory map and can be accessed
only in programming mode (for example using a
standard ST7 programming tool). The default con-
tent of the FLASH is fixed to FFh. To program the
FLASH devices directly using ICP, FLASH devices
are shipped to customers with the internal RC
clock source enabled. In masked ROM devices,
the option bytes are fixed in hardware by the ROM
code (see option list).
OPTION BYTE 0
OPT7= WDG HALT Watchdog and HALT mode
This option bit determines if a RESET is generated
when entering HALT mode while the Watchdog is
active.
0: No Reset generation when entering Halt mode
1: Reset generation when entering Halt mode
OPT6= WDG SW Hardware or software watchdog
This option bit selects the watchdog type.
0: Hardware (watchdog always enabled)
1: Software (watchdog to be enabled by software)
OPT5 = Reserved, must be kept at default value.
Default
7
1
WDG
1
STATIC OPTION BYTE 0
1
1
0
VD
0
0
1
1
1
0
shipped to customers with a default content, while
ROM/FASTROM factory coded parts contain the
code supplied by the customer. This implies that
FLASH devices have to be configured by the cus-
tomer using the Option Bytes while the ROM/FAS-
TROM devices are factory-configured.
OPT4:3= VD[1:0] Voltage detection
These option bits enable the voltage detection
block (LVD, and AVD) with a selected threshold for
the LVD and AVD (EVD+AVD).
Caution: If the medium or low thresholds are se-
lected, the detection may occur outside the speci-
fied operating voltage range. Below 3.8V, device
operation is not guaranteed. For details on the
AVD and LVD threshold levels refer to
12.3.2 on page 141
OPT2 = Reserved, must be kept at default value.
OPT1= PKG0 Package selection bit 0
This option bit isused with the PKG1 bit to select
the package.
Lowest Threshold: (V
Med. Threshold (V
Highest Threshold (V
1
17
Selected Low Voltage Detector
ST72321Rx ST72321ARx ST72321Jx
1
LVD and AVD Off
OSCTYPE
STATIC OPTION BYTE
1
1
DD
~3.5V)
DD
DD
0
0
~4V)
~3V)
2
1
OSCRANGE
1
1
VD1
1
1
0
0
0
1
section
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VD0
1
0
1
0
0
1