ST72E331 datasheet(107/107 Pages) STMICROELECTRONICS

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ST72E331 ST72T331

9 SUMMARY OF CHANGES

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by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject

to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not

authorized for use as critical components in life support devices or systems without the express written approval of STMicroelectronics.

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I2C system is granted provided that the system conforms to the I2C Standard Specification as defined by Philips.

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Change Description (Rev. 1.5 to 1.6)

Page

Added new External Connections section

Removed RP external resistor

Changed ORed to ANDed in External interrupts paragraph, to read “If several input pins, con-

nected to the same interrupt vector, are configured as interrupts, their signals are logically AN-

Ded before entering the edge/level detection block”.

21 and 27

Added note ”Any modification of one of these two bits resets the interrupt request related to

this interrupt vector.”

Added clamping diodes to I/O pin figure and table

Added sections on low power modes and interrupts to peripheral descriptions

36, 38, 51, 64, 78, 83

Changed 16-bit Timer chapter

40 to 56

Added details to description of FOLV1 and FOLV2 bits

Added ADC recommended external connections

Added Reset characteristics section

Added min. value for VLVDUP

Added figure to ADC Converter Specification

Removed ST72331 ROM device (supported by ST72334)

Change Description (Rev. 1.6 to 1.7)

SPR2 bit reinstated in SPI chapter

69 to 81

Change Description (Rev. 1.7 to 1.8) of 31 May 2001

SPI frequency changed from fCPU/2 to fCPU/4 in Table 18

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