Atmel AVR XMEGA 8/16-bit High Performance Low Power Flash Microcontrollers Datasheet download pdf (Page 31)

XMEGA B1 [DATASHEET]

Atmel-8330H-AVR-ATxmega64B1-128B1_datasheet–12/2014

15.3.1 Push-pull

Figure 15-1. I/O Configuration - Totem-pole

15.3.2 Pull-down

Figure 15-2. I/O Configuration - Totem-pole with Pull-down (on Input)

15.3.3 Pull-up

Figure 15-3. I/O Configuration - Totem-pole with Pull-up (on Input)

15.3.4 Bus-keeper

The bus-keeper’s weak output produces the same logical level as the last output level. It acts as a pull-up if the last level

was ‘1’, and pull-down if the last level was ‘0’.

INn

OUTn

DIRn

INn

OUTn

DIRn

INn

OUTn

DIRn

1 2 ... 26 27 28 29 30 31 32 33 34 35 36 ... 144 145

ATxmega128B1 / ATxmega64B1 1
1. Ordering Information 2
Typical Applications 3
2. Pinout/Block Diagram 4
Top view 5
Bottom view 5
3. Overview 6
4. Resources 8
5. Capacitive Touch Sensing 8
6. AVR CPU 9
XMEGA B1 [DATASHEET] 10
6.4.1 Hardware Multiplier 10
7. Memories 12
7.3.1 Application Section 13
7.3.3 Boot Loader Section 13
7.3.5 User Signature Row 14
9. Event System 18
11.3.1 Idle Mode 23
11.3.2 Power-down Mode 23
11.3.3 Power-save Mode 24
11.3.4 Standby Mode 24
11.3.5 Extended Standby Mode 24
12. System Control and Reset 25
13. WDT – Watchdog Timer 27
15. I/O Ports 30
15.3.5 Others 32
22. TWI – Two-wire Interface 42
24. USART 44
26. AES and DES Crypto Engine 46
30. AC – Analog Comparator 51
Figure 30-2 52
31. Programming and Debugging 53
32. Pinout and Pin Functions 54
34. Instruction Set Summary 62
35. Packaging Information 67
35.2 7A1 68
Safe Operating Area 70
36.3 DC Characteristics 71
Wake-up request 74
Clock output 74
Wake-up time 74
36.5 I/O Pin Characteristics 75
36.7 ADC Characteristics 76
Device internal 86
External 86
32.768 kHz crystal 86
36.15 SPI Characteristics 87
37. Typical Characteristics 91
Temp [°C] 93
Icc [µA] 97
37.2 I/O Pin Characteristics 99
I/O pin read as “0” 104
37.3 ADC Characteristics 105
Figure 37-31. ADC DNL vs. V 106
Figure 37-32. ADC DNL vs. V 106
= 3.6V, external reference 107
SE Unsigned mode, V 107
= 1.0V, external reference 107
Gain Error [mV] 109
CURRENTSOURCE 115
37.6 BOD Characteristics 116
THRESHOLD 121
Frequency [MHz] 126
Frequency Step Error [%] 127
Frequency Step size [%] 127
Frequency (MHz) 129
37.9 PDI Characteristics 131
37.10 LCD Characteristics 132
Frame Rate[Hz] 133
Contrast 133
38. Errata 136
Problem fix/Workaround 137
39.5 8330D – 01/2013 139
39.6 8330C – 07/2012 139
39.7 8330B – 02/2012 139
39.8 8330A – 10/2011 139
Table Of Contents 141

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Atmel AVR XMEGA 8/16-bit High Performance Low Power Flash Microcontrollers Datasheet Page 31

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