ata6616 ATMEL Corporation, ata6616 Datasheet - Page 252
ata6616
Manufacturer Part Number
ata6616
Description
Microcontroller With Lin Transceiver, 5v Regulator And Watchdog
Manufacturer
ATMEL Corporation
Datasheet
1.ATA6616.pdf
(310 pages)
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4.22.2.1
4.22.3
4.22.4
252
ATA6616/ATA6617 [Preliminary]
Signature Bytes
Calibration Byte
Latching of Fuses
Table 4-70.
The fuse values are latched when the device enters programming mode and changes of the
fuse values will have no effect until the part leaves Programming mode. This does not apply to
the EESAVE Fuse which will take effect once it is programmed. The fuses are also latched on
Power-up in Normal mode.
All Atmel microcontrollers have a three-byte signature code which identifies the device. This
code can be read in both serial and parallel mode, also when the device is locked. The three
bytes reside in a separate address space.
Table 4-71.
The ATtiny167 has a byte calibration value for the internal RC Oscillator. This byte resides in the
high byte of address 0x000 in the signature address space. During reset, this byte is automati-
cally written into the OSCCAL Register to ensure correct frequency of the calibrated RC
Oscillator.
Notes:
Fuse Low Byte
CKDIV8
CKOUT
CKSEL3
CKSEL2
CKSEL1
CKSEL0
ATtiny167
SUT1
SUT0
Device
1. The default value of SUT1..0 results in maximum start-up time for the default clock source.
2. The default setting of CKSEL3..0 results in internal RC Oscillator @ 8 MHz. See
3. The CKOUT Fuse allows the system clock to be output on PORTB5. See
4. See
(3)
See
page 51
“Clock Output Buffer” on page 56
(4)
Fuse Low Byte
Signature Bytes
Table 4-7 on page 52
Section 4.5.4 “System Clock Prescaler” on page 62
for details.
Bit No
Address
7
6
5
4
3
2
1
0
0
1
2
Value
Select Clock source
Select Clock source
Select Clock source
Select Clock source
0x1E
0x94
0x87
Select start-up time
Select start-up time
for details.
Divide clock by 8
Clock output
Description
for details.
Signature Byte Description
Indicates manufactured by Atmel
Indicates 16 KB Flash memory
Indicates ATtiny167 device when address 1 contains 0x94
DRAFT
for details.
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
0 (programmed)
0 (programmed)
0 (programmed)
0 (programmed)
0 (programmed)
Default Value
Section 4.5.2.7
9132A–AUTO–10/08
Table 4-6 on
(1)
(2)
(2)
(2)
(1)
(2)
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