Datasheet

19
ATtiny20 [DATASHEET]
8235ES–AVR–03/2013
9. Datasheet Revision History
Revision Date Comments
8235E 03/13
Updated WLCSP ball configuration on page 3.
Updated WLCSP package drawing, “12U-1” on page 13
8235D 10/12 Updated Document template, and “Pin Configurations” on page 2
8235C 06/12
Updated “Ordering Information” on page 12.
Added Wafer Level Chip Scale Package “12U-1” on page 13.
8235B 04/11
Removed Preliminary status.
Updated Bit syntax throughout the datasheet, e.g. from CS02:0 to CS0[2:0], Idle Mode
description on page 6, “Capacitive Touch Sensing” on page 7 (section updated and moved),
“Disclaimer” on page 7, Sentence on low impedance sources in “Analog Input Circuitry” on
page 116, Description on 16-bit registers on page 9, Description on Stack Pointer on page 10,
List of active modules in “Idle Mode” on page 23, Description on reset pulse width in
“Watchdog Reset” on page 30, Program code on page 37, Bit description in Figure 11-3 on
page 62, Section “Compare Output Mode and Waveform Generation” on page 63, Signal
descriptions in Figure 11-5 on page 64, and Figure 11-7 on page 67, Equations on page 65,
page 66, and page 67, Terminology in sections describing extreme values on page 66, and
page 67, Description on creating frequency waveforms on page 67, Signal routing in Figure 12-
1 on page 76, TOP definition in Table 12-1 on page 77, Signal names in Figure 12-3 on page
79, TWSHE bit description in “TWSCRA – TWI Slave Control Register A” on page 143, SPI
slave assembly code example on page 129, Table 21-1 on page 174, Section “Speed” on page
168, Characteristics in Figure 21-3 on page 176, and Figure 21-8 on page 179.
Added Note on internal voltage reference in Table 15-4 on page 121, PRADC in Table 21-2 on
page 175, MISO output driver errata for device rev. A in “Errata” on page 18
8235A 03/10 Initial revision