Datasheet

133
XMEGA D4 [DATASHEET]
8135P–AVR–01/2014
Table 32-103.Programming time.
Notes: 1. Programming is timed from the 2MHz internal oscillator.
2. EEPROM is not erased if the EESAVE fuse is programmed.
32.4.13 Clock and Oscillator Characteristics
32.4.13.1 Calibrated 32.768kHz Internal Oscillator characteristics
Table 32-104. 32.768kHz internal oscillator characteristics.
32.4.13.2 Calibrated 2MHz RC Internal Oscillator characteristics
Table 32-105. 2MHz internal oscillator characteristics.
Symbol Parameter Condition Min. Typ.
(1)
Max. Units
Chip erase 64KB Flash, EEPROM
(2)
and SRAM erase 55 ms
Flash
Page erase 4
Page write 4
Atomic Page Erase and write 8
EEPROM
Page erase 4
Page write 4
Atomic Page erase and write 8
Symbol Parameter Condition Min. Typ. Max. Units
Frequency 32.768 kHz
Factory calibration accuracy T = 85C, V
CC
= 3.0V -0.5 0.5
%
User calibration accuracy -0.5 0.5
Symbol Parameter Condition Min. Typ. Max. Units
Frequency range
DFLL can tune to this frequency over
voltage and temperature
1.8 2.2
MHz
Factory calibrated frequency 2.0
Factory calibration accuracy T = 85C, V
CC
= 3.0V -1.5 1.5
%User calibration accuracy -0.2 0.2
DFLL calibration stepsize 0.21