ST72C334N2T6 STMicroelectronics, ST72C334N2T6 Datasheet - Page 5

• Manufacturer Part Number: ST72C334N2T6
• Description: Microcontrollers (MCU) Flash 8K SPI/SCI
• Manufacturer: STMicroelectronics

Specifications of ST72C334N2T6

• Data Bus Width: 8 bit
• Program Memory Type: Flash
• Program Memory Size: 8 KB
• Data Ram Size: 384 B
• Interface Type: SCI, SPI
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 16 bit
• Operating Supply Voltage: 3.2 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: TQFP-64
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8 bit
• Lead Free Status / Rohs Status: In Transition

1 PREAMBLE: ST72C334 VERSUS ST72E331 SPECIFICATION
New Features available on the ST72C334
ST72C334 I/O Confuguration and Pinout
New Memory Locations in ST72C334
4
8 or 16K FLASH/ROM with In-Situ Programming and Read-out protection
New ADC with a better accuracy and conversion time
New configurable Clock, Reset and Supply system
New power saving mode with real time base: Active Halt
Beep capability on PF1
New interrupt source: Clock security system (CSS) or Main clock controller (MCC)
Same pinout as ST72E331
PA6 and PA7 are true open drain I/O ports without pull-up (same as ST72E331)
PA3, PB3, PB4 and PF2 have no pull-up configuration (all IOs present on TQFP44)
PA5:4, PC3:2, PE7:4 and PF7:6 have high sink capabilities (20mA on N-buffer, 2mA on P-buffer and
pull-up). On the ST72E331, all these pads (except PA5:4) were 2mA push-pull pad without high sink
capabilities. PA4 and PA5 were 20mA true open drain.
20h: MISCR register becomes MISCR1 register (naming change)
29h: new control/status register for the MCC module
2Bh: new control/status register for the Clock, Reset and Supply control. This register replaces the
WDGSR register keeping the WDOGF flag compatibility.
40h: new MISCR2 register
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