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AT89LP4052 Datasheet(PDF) 89 Page - ATMEL Corporation |
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AT89LP4052 Datasheet(HTML) 89 Page - ATMEL Corporation |
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89 / 94 page  89 3547J–MICRO–10/09 AT89LP2052/LP4052 27. Revision History Revision A – March 2005 • Initial Release Revision B – June 2005 • Last paragraph in Section 13.2 on page 15 was inserted. Revision C – August 2005 • In Table 16-3 on page 26, changed the SFR address for TCONB from 88H to 91H. • Changed the Maximum Bit Frequency from f/2 to f/4 in the “Serial Peripheral Interface” on page 42. • In the “SPI Block Diagram” on page 43, the 16-bit reference was deleted from Shift Register box. • In the “SPSR – SPI Status Register” on page 46, the Divider ratios were changed to the following: ÷4÷8÷32÷64 • Replaced CM3 with CM2 in Bit 2 of register ACSR (page 50) • In the “Programming Command Summary” on page 58, several changes were made in specific bit positions within the Addr High, Addr Low and Data 0 columns. Revision D – April 2006 • Added ROHS compliant device offerings. Revision E – June 2006 • In pages 1, 82 and 83, the reference to VCC = 2.7V were changed to 2.4V. On page 79 the maximum rating for the operating temperature was changed from +125 ⋅ C to +85⋅ C. Revision F – June 2006 • In Table 6-1 on page 6, changed the SFR address of SPDR from 85H to 86H. Revision G – April 2007 • In section 7.8 ”Reset” on page 8 changed the polarity of the RST input signal requirement from low to high. • Added Section 11. “Oscillator Characteristics” on page 11. Revision H – May 2007 • Changed TMOD to TCON (Table 16-1 on page 27). • Changed SPI = 1 and SPI = 0 to SPE = 1 and SPE = 0 (Table 19-1 on page 45). Revision I – June 2008 • Removed Standard Packaging Offering. Revision J – Oct. 2009 • Added R1 option to oscillator connection diagram Figure 11-1 on page 11. • Added related oscillator amplitude graphs Figures 11-3 and 11-5. |
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