ST72T331N2T6 STMicroelectronics, ST72T331N2T6 Datasheet - Page 14

• Manufacturer Part Number: ST72T331N2T6
• Description: 8-bit Microcontrollers - MCU OTP EPROM 8K SPI/SCI
• Manufacturer: STMicroelectronics

Specifications of ST72T331N2T6

• Product Category: 8-bit Microcontrollers - MCU
• Rohs: yes
• Core: ST7
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 16 MHz
• Program Memory Size: 8 KB
• Data Ram Size: 384 B
• On-chip Adc: Yes
• Package / Case: TQFP-64
• Mounting Style: SMD/SMT
• A/d Bit Size: 8 bit
• A/d Channels Available: 8
• Interface Type: SCI, SPI
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Number Of Programmable I/os: 44
• Number Of Timers: 2
• On-chip Dac: No
• Program Memory Type: EPROM
• Factory Pack Quantity: 90
• Supply Voltage - Max: 5.5 V
• Supply Voltage - Min: 3.5 V

ST72E331 ST72T331
1.5 OPTION BYTE
The user has the option to select software watch-
dog or hardware watchdog (see description in the
Watchdog chapter). When programming EPROM
or OTP devices, this option is selected in a menu
by the user of the EPROM programmer before
burning the EPROM/OTP. The Option Byte is lo-
cated in a non-user map. No address has to be
specified. The Option Byte is at FFh after UV eras-
ure and must be properly programmed to set de-
sired options.
14/107
14
OPTBYTE
Bit 7:4 = Not used
Bit 3 = Reserved, must be cleared.
Bit 2 = Reserved, must be set on ST72T331N de-
vices and must be cleared on ST72T331J devices.
Bit 1 = Not used
Bit 0 = WDG Watchdog disable
0: The Watchdog is enabled after reset (Hardware
1: The Watchdog is not enabled after reset (Soft-
Watchdog).
ware Watchdog).
7
-
-
-
-
b3
b2
-
WDG
0