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tinyAVR® 1-series ATtiny3216/3217 Automotive
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34
UPDI - Unified Program and Debug Interface
34.3
Functional Description
ATtiny3216/3217 Automotive
Introduction
Features
1
Silicon Errata and Data Sheet Clarification Document
2
tinyAVR® 1-series Overview
3
Block Diagram
4
Pinout
5
I/O Multiplexing and Considerations
6
Automotive Quality Grade
7
Memories
8
Peripherals and Architecture
9
AVR® CPU
10
NVMCTRL - Nonvolatile Memory Controller
11
CLKCTRL - Clock Controller
12
SLPCTRL - Sleep Controller
13
RSTCTRL - Reset Controller
14
CPUINT - CPU Interrupt Controller
15
EVSYS - Event System
16
PORTMUX - Port Multiplexer
17
PORT - I/O Pin Configuration
18
BOD - Brown-out Detector
19
VREF - Voltage Reference
20
WDT - Watchdog Timer
21
TCA - 16-bit Timer/Counter Type A
22
TCB - 16-bit Timer/Counter Type B
23
TCD - 12-Bit Timer/Counter Type D
24
RTC - Real-Time Counter
25
USART - Universal Synchronous and Asynchronous Receiver and Transmitter
26
SPI - Serial Peripheral Interface
27
TWI - Two-Wire Interface
28
CRCSCAN - Cyclic Redundancy Check Memory Scan
29
CCL - Configurable Custom Logic
30
AC - Analog Comparator
31
ADC - Analog-to-Digital Converter
32
DAC - Digital-to-Analog Converter
33
PTC - Peripheral Touch Controller
34
UPDI - Unified Program and Debug Interface
34.1
Features
34.2
Overview
34.3
Functional Description
34.3.1
Principle of Operation
34.3.2
Operation
34.3.3
UPDI Instruction Set
34.3.4
CRC Checking of Flash During Boot
34.3.5
System Clock Measurement with UPDI
34.3.6
Inter-Byte Delay
34.3.7
System Information Block
34.3.8
Enabling of Key Protected Interfaces
34.3.9
Events
34.3.10
Sleep Mode Operation
34.4
Register Summary
34.5
Register Description
35
Instruction Set Summary
36
Conventions
37
Electrical Characteristics
38
Typical Characteristics
39
Ordering Information
40
Package Drawings
41
Errata
42
Data Sheet Revision History
The Microchip Website
Product Change Notification Service
Customer Support
Product Identification System
Microchip Devices Code Protection Feature
Legal Notice
Trademarks
Quality Management System
Worldwide Sales and Service
34.3 Functional Description
