Datasheet

423
7766G–AVR–02/2014
ATmega16/32U4
36. Datasheet Revision History for ATmega16U4/ATmega32U4
Please note that the referring page numbers in this section are referred to this document. The
referring revision in this section are referring to the document revision.
36.1 Rev. 7766G – 02/2014
36.2 Rev. 7766F – 11/10
36.3 Rev. 7766E – 04/10
1.
Updated the “Description” on page 175 of the “Output Compare Modulator (OCM1C0A)” .
Specified when the logical AND and the logical OR will be performed based on the PORTB7.
2.
Updated “USART Control and Status Register n D– UCSRnD” on page 209. “Bits 7:2 -
Reserved” are Read only.
3.
Updated “Crystal-less operation” on page 256. The temperature range changed to “within the
0C and +40C.
4. MUX bit in “ADC Control and Status Register B – ADCSRB” on page 289 changed to R/W.
5.
Updated Table 24-6 on page 312. Trigger Source: Timer/Counter0 Compare Match updated
to Timer/Counter0 Compare Match A.
6.
Updated “DC Characteristics” on page 378. Added Active 16MHz, Vcc = 5V, max 27mA, in
“Icc / Power supply current”.
7. Updated “Register Summary” on page 408. Added UCSRnD at the address CBh.
8.
Replaced the “TQFP44” on page 417 and “QFN44” on page 418 by updated package
drawings.
9. Updated the last page according to Atmel new Brand Style Guide (new logo).
1. Replaced the “QFN44” on page 418 by an updated drawing.
2.
Updated “ADC Control and Status Register B – ADCSRB” on page 289. Defined the
ADCSRB register as in “ADC Control and Status Register B – ADCSRB” on page 312.
3. Updated the last page according to Atmel new Brand Style Guide.
1. Updated “Features” on page 1.
2. Updated “Features” on page 253.
3. Updated Figure 21-9 on page 258.
4. Updated Section 21.8 on page 260.
5. Updated “Features” on page 292.
6. Updated “ATmega16U4/ATmega32U4 Boundary-scan Order” on page 327.
7. Updated “Program And Data Memory Lock Bits” on page 346.
8. Updated Table 28-5 on page 348.
9. Updated “Electrical Characteristics” on page 378.