ST72C314N4 查看數據表（PDF） - STMicroelectronics

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ST72C314N4

8-bit MCU for automotive with single voltage Flash/ROM memory, ADC, 16-bit timers, SPI, SCI interfaces

STMicroelectronics 

ST72334xx-Auto, ST72314xx-Auto, ST72124Jx-Auto

1 PREAMBLE: ST72C334-Auto VERSUS ST72E331 SPECIFICATION

New Features available on the ST72C334-Auto

■ 8 or 16K Flash/ROM with In-Situ Programming

and Readout 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)

New Memory Locations in ST72C334-Auto

■ 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

ST72C334-Auto I/O Configuration and Pinout

■ 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 I/Os 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 pads

without high sink capabilities. PA4 and PA5

were 20mA true open drains.

7/150

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