ATTINY87-15XZ Atmel, ATTINY87-15XZ Datasheet - Page 164
![MCU AVR 8K FLASH 15MZ 20-TSSOP](/photos/6/80/68045/313-20-tssop_sml.jpg)
ATTINY87-15XZ
Manufacturer Part Number
ATTINY87-15XZ
Description
MCU AVR 8K FLASH 15MZ 20-TSSOP
Manufacturer
Atmel
Series
AVR® ATtinyr
Datasheet
1.ATTINY167-15MD.pdf
(283 pages)
Specifications of ATTINY87-15XZ
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
I²C, LIN, SPI, UART/USART, USI
Peripherals
Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Number Of I /o
16
Program Memory Size
8KB (4K x 16)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 11x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
20-TSSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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15.3.3
15.3.4
15.3.5
15.4
164
LIN / UART Controller
ATtiny87/ATtiny167
Data Transport
Schedule Table
Compatibility with LIN 1.3
Two types of data may be transported in a frame; signals or diagnostic messages.
The master task (in the master node) transmits frame headers based on a schedule table. The
schedule table specifies the identifiers for each header and the interval between the start of a
frame and the start of the following frame. The master application may use different schedule
tables and select among them.
LIN 2.1 is a super-set of LIN 1.3.
A LIN 2.1 master node can handle clusters consisting of both LIN 1.3 slaves and/or LIN 2.1
slaves. The master will then avoid requesting the new LIN 2.1 features from a LIN 1.3 slave:
LIN 2.1 slave nodes can not operate with a LIN 1.3 master node (e.g. the LIN1.3 master does
not support the enhanced checksum).
The LIN 2.1 physical layer is backwards compatible with the LIN1.3 physical layer. But not the
other way around. The LIN 2.1 physical layer sets greater requirements, i.e. a master node
using the LIN 2.1 physical layer can operate in a LIN 1.3 cluster.
The LIN/UART controller is divided in three main functions:
These functions mainly use two services:
Because these two services are basically UART services, the controller is also able to switch
into an UART function.
• Signals
• Diagnostic messages
• Enhanced checksum,
• Re-configuration and diagnostics,
• Automatic baud rate detection,
• "Response error" status monitoring.
• Tx LIN Header function,
• Rx LIN Header function,
• LIN Response function.
• Rx service,
• Tx service.
Signals are scalar values or byte arrays that are packed into the data field of a frame. A
signal is always present at the same position in the data field for all frames with the same
identifier.
Diagnostic messages are transported in frames with two reserved identifiers. The
interpretation of the data field depends on the data field itself as well as the state of the
communicating nodes.
7728G–AVR–06/10
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