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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
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authorized for use as criti cal 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
10
Removed RP external resistor
18
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.”
26
Added clamping diodes to I/O pin figure and table
29
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
52
Added ADC recommended external connections
83
Added Reset characteristics section
93
Added min. value for VLVDUP
95
Added figure to ADC Converter Specification
96
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 Descriptio n (Rev. 1.7 to 1.8) of 31 May 2001
SPI frequency changed from fCPU/2 to fCPU/4 in Table 18
80