ATA6616-P3PW Atmel, ATA6616-P3PW Datasheet - Page 127
ATA6616-P3PW
Manufacturer Part Number
ATA6616-P3PW
Description
TXRX MULTICHIP MOD LIN SIP 38QFN
Manufacturer
Atmel
Series
AVR® ATA66 LIN-SBCr
Datasheet
1.ATA6617-EK.pdf
(308 pages)
Specifications of ATA6616-P3PW
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 (8K x 8)
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
38-VQFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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4.11.11.4
4.11.11.5
9132D–AUTO–12/10
Output Compare Register A – OCR0A
Asynchronous Status Register – ASSR
The Output Compare Register A contains an 8-bit value that is continuously compared with
the counter value (TCNT0). A match can be used to generate an Output Compare interrupt, or
to generate a waveform output on the OC0A pin.
• Bit 7 – Res: Reserved Bit
This bit is reserved in the Atmel
• Bit 6 – EXCLK: Enable External Clock Input
When EXCLK is written to one, and asynchronous clock is selected, the external clock input
buffer is enabled and an external clock can be input on XTAL1 pin instead of an external crys-
tal. Writing to EXCLK should be done before asynchronous operation is selected. Note that
the crystal oscillator will only run when this bit is zero.
• Bit 5 – AS0: Asynchronous Timer/Counter0
When AS0 is written to zero, Timer/Counter0 is clocked from the I/O clock, clkI/O and the
Timer/Counter0 acts as a synchronous peripheral.
When AS0 is written to one, Timer/Counter0 is clocked from the low-frequency crystal oscilla-
tor
XTAL1 pin
the value of AS0 is changed, the contents of TCNT0, OCR0A, and TCCR0A might be
corrupted.
AS0 also acts as a flag: Timer/Counter0 is clocked from the low-frequency crystal or from
external clock ONLY IF the calibrated internal RC oscillator or the internal watchdog oscillator
is used to drive the system clock. After setting AS0, if the switching is available, AS0 remains
to 1, else it is forced to 0.
• Bit 4 – TCN0UB: Timer/Counter0 Update Busy
When Timer/Counter0 operates asynchronously and TCNT0 is written, this bit becomes set.
When TCNT0 has been updated from the temporary storage register, this bit is cleared by
hardware. A logical zero in this bit indicates that TCNT0 is ready to be updated with a new
value.
• Bit 3 – OCR0AUB: Output Compare 0 Register A Update Busy
When Timer/Counter0 operates asynchronously and OCR0A is written, this bit becomes set.
When OCR0A has been updated from the temporary storage register, this bit is cleared by
hardware. A logical zero in this bit indicates that OCR0A is ready to be updated with a new
value.
• Bit 2 – Res: Reserved Bit
This bit is reserved in the Atmel ATtiny87/167 and will always read as zero.
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
(Section 4.5.2.5 “Low-frequency Crystal Oscillator” on page
(Section 4.5.2.6 “External Clock” on page
OCR0A7 OCR0A6 OCR0A5 OCR0A4 OCR0A3 OCR0A2 OCR0A1 OCR0A0
R
7
–
0
R/W
7
0
EXCLK
R/W
6
0
R/W
6
0
®
AS0
R/W
5
0
ATtiny87/167 and will always read as zero.
R/W
5
0
TCN0UB OCR0AUB
R
4
0
R/W
4
0
Atmel ATA6616/ATA6617
R/W
R
3
0
3
0
54) depending on EXCLK setting. When
R/W
R
2
–
0
2
0
53) or from external clock on
TCR0AUB TCR0BUB
R/W
1
0
R
1
0
R/W
0
0
R
0
0
OCR0A
ASSR
127
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