Atmel AVR XMEGA 8/16-bit High Performance Low Power Flash Microcontrollers Arkusz Danych Pobierz pdf (Strona 32)

XMEGA E5 [DATASHEET]

Atmel-8153J–AVR-ATxmega8E5-ATxmega16E5-ATxmega32E5_Datasheet–11/2014

16.3.4 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’.

Figure 16-4. I/O Configuration - Totem-pole with Bus-keeper

16.3.5 Others

Figure 16-5. Output Configuration - Wired-OR with Optional Pull-down

Figure 16-6. I/O Configuration - Wired-AND with Optional Pull-up

INxn

OUTxn

DIRxn

Pxn

INxn

OUTxn

Pxn

INxn

OUTxn

Pxn

1 2 ... 27 28 29 30 31 32 33 34 35 36 37 ... 146 147

DATASHEET 1
1. Ordering Information 2
2. Typical Applications 3
3. Pinout and Block Diagram 4
4. Overview 5
5. Resources 6
6. Capacitive Touch Sensing 6
7.1 Features 7
7.2 Overview 7
7.3 Architectural Overview 7
7.7 Stack and Stack Pointer 9
7.5 Program Flow 9
7.6 Status Register 9
7.8 Register File 10
8. Memories 11
8.4 Fuses and Lock Bits 13
8.5 Data Memory 14
8.6 EEPROM 14
8.7 I/O Memory 14
8.9 Memory Timing 14
8.10 Device ID and Revision 15
8.11 I/O Memory Protection 15
9.1 Features 16
9.2 Overview 16
10. Event System 18
11.1 Features 20
11.2 Overview 20
12.1 Features 23
12.2 Overview 23
12.3 Sleep Modes 23
12.3.3 Power-save Mode 24
12.3.4 Standby Mode 24
12.3.5 Extended Standby Mode 24
13. System Control and Reset 25
14. WDT – Watchdog Timer 27
15.1 Features 28
15.2 Overview 28
15.3 Interrupt Vectors 28
16. I/O Ports 30
16.3.1 Push-pull 31
16.3.2 Pull-down 31
16.3.3 Pull-up 31
16.3.4 Bus-keeper 32
16.3.5 Others 32
17.1 Features 34
17.2 Overview 34
18. WeX – Waveform Extension 36
19.1 Features 38
19.2 Overview 38
20. Fault Extension 39
21.1 Features 40
21.2 Overview 40
22. TWI – Two-Wire Interface 42
23.1 Features 44
23.2 Overview 44
24. USART 45
25.1 Features 47
25.2 Overview 47
26.1 Features 48
26.2 Overview 48
Control Registers 49
28.1 Features 51
28.2 Overview 51
DAC0 53
DAC1 53
30. AC – Analog Comparator 54
31. Programming and Debugging 56
32. Pinout and Pin Functions 57
32.1.7 Debug/System Functions 58
32.2 Alternate Pin Functions 59
34. Instruction Set Summary 63
35. Packaging Information 68
35.2 32Z 69
35.3 32MA 70
36.1 Absolute Maximum Ratings 71
Safe Operating Area 72
36.3 Current Consumption 73
Wakeup request 75
Clock output 75
Wakeup time 75
36.5 I/O Pin Characteristics 76
36.6 ADC Characteristics 76
36.7 DAC Characteristics 79
36.14 SPI Characteristics 89
37. Typical Characteristics 93
XMEGA E5 [DATASHEET] 100
37.2 I/O Pin Characteristics 104
37.3 ADC Characteristics 111
37.4 DAC Characteristics 116
37.5 AC Characteristics 117
37.7 BOD Characteristics 122
37.12 PDI Characteristics 135
38.1 Rev. B 136
38.2 Rev. A 138
Workaround: 139
39. Revision History 141
39.7 8153D – 06/2013 142
39.8 8153C – 05/2013 142
39.9 8153B – 04/2013 142
39.10 8153A – 04/2013 142
Table of Contents 143

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Atmel AVR XMEGA 8/16-bit High Performance Low Power Flash Microcontrollers Arkusz Danych Strona 32

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