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23
RTC - Real-Time Counter
ATtiny3216/3217
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
Memories
7
Peripherals and Architecture
8
AVR® CPU
9
NVMCTRL - Nonvolatile Memory Controller
10
CLKCTRL - Clock Controller
11
SLPCTRL - Sleep Controller
12
RSTCTRL - Reset Controller
13
CPUINT - CPU Interrupt Controller
14
EVSYS - Event System
15
PORTMUX - Port Multiplexer
16
PORT - I/O Pin Configuration
17
BOD - Brown-out Detector
18
VREF - Voltage Reference
19
WDT - Watchdog Timer
20
TCA - 16-bit Timer/Counter Type A
21
TCB - 16-bit Timer/Counter Type B
22
TCD - 12-Bit Timer/Counter Type D
23
RTC - Real-Time Counter
23.1
Features
23.2
Overview
23.3
Clocks
23.4
RTC Functional Description
23.5
PIT Functional Description
23.6
Events
23.7
Interrupts
23.8
Sleep Mode Operation
23.9
Synchronization
23.10
Debug Operation
23.11
Register Summary
23.12
Register Description
24
USART - Universal Synchronous and Asynchronous Receiver and Transmitter
25
SPI - Serial Peripheral Interface
26
TWI - Two-Wire Interface
27
CRCSCAN - Cyclic Redundancy Check Memory Scan
28
CCL - Configurable Custom Logic
29
AC - Analog Comparator
30
ADC - Analog-to-Digital Converter
31
DAC - Digital-to-Analog Converter
32
PTC - Peripheral Touch Controller
33
UPDI - Unified Program and Debug Interface
34
Instruction Set Summary
35
Conventions
36
Electrical Characteristics
37
Typical Characteristics
38
Ordering Information
39
Package Drawings
40
Errata
41
Data Sheet Revision History
The Microchip Website
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23 RTC - Real-Time Counter
