AT32UC3C1512C Automotive Atmel Corporation, AT32UC3C1512C Automotive Datasheet - Page 319
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AT32UC3C1512C Automotive
Manufacturer Part Number
AT32UC3C1512C Automotive
Description
Manufacturer
Atmel Corporation
Datasheets
1.AT90CAN128_AUTOMOTIVE.pdf
(225 pages)
2.AT32UC3C0512C_AUTOMOTIVE.pdf
(1312 pages)
3.AT32UC3C0512C_AUTOMOTIVE.pdf
(107 pages)
- AT90CAN128_AUTOMOTIVE PDF datasheet
- AT32UC3C0512C_AUTOMOTIVE PDF datasheet #2
- AT32UC3C0512C_AUTOMOTIVE PDF datasheet #3
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- Download datasheet (20Mb)
18.6.4.6
Table 18-4.
18.6.4.7
9166C–AVR-08/11
Coded Value
setup [5:0]
pulse [6:0]
cycle [8:0]
Coding timing parameters
Usage restriction
Coding and Range of Timing Parameters
Number of Bits
6
7
9
All timing parameters are defined for one chip select and are grouped together in one register
according to their type.
The Setup register (SETUP) groups the definition of all setup parameters:
The Pulse register (PULSE) groups the definition of all pulse parameters:
The Cycle register (CYCLE) groups the definition of all cycle parameters:
Table 18-4 on page 319
The SMC does not check the validity of the user-programmed parameters. If the sum of SETUP
and PULSE parameters is larger than the corresponding CYCLE parameter, this leads to unpre-
dictable behavior of the SMC.
For read operations:
Null but positive setup and hold of address and NRD and/or NCS can not be guaranteed at the
memory interface because of the propagation delay of theses signals through external logic and
pads. If positive setup and hold values must be verified, then it is strictly recommended to pro-
gram non-null values so as to cover possible skews between address, NCS and NRD signals.
For write operations:
If a null hold value is programmed on NWE, the SMC can guarantee a positive hold of address,
byte select lines, and NCS signal after the rising edge of NWE. This is true if the MODE.WRITE-
MODE bit is written to one. See
For read and write operations: a null value for pulse parameters is forbidden and may lead to
unpredictable behavior.
In read and write cycles, the setup and hold time parameters are defined in reference to the
address bus. For external devices that require setup and hold time between NCS and NRD sig-
nals (read), or between NCS and NWE signals (write), these setup and hold times must be
converted into setup and hold times in reference to the address bus.
• NRDSETUP, NCSRDSETUP, NWESETUP, and NCSWRSETUP.
• NRDPULSE, NCSRDPULSE, NWEPULSE, and NCSWRPULSE.
• NRDCYCLE, NWECYCLE.
256 x cycle[8:7] + cycle[6:0]
128 x setup[5] + setup[4:0]
256 x pulse[6] + pulse[5:0]
Effective Value
shows how the timing parameters are coded and their permitted range.
Section
18.6.5.2.
128 ≤ value ≤ 255
256 ≤ value ≤ 383
384 ≤ value ≤ 511
64≤ value ≤ 127
32 ≤ value ≤ 63
0 ≤ value ≤ 127
0 ≤ value ≤ 31
0 ≤ value ≤ 63
Coded Value
Permitted Range
256 ≤ value ≤ 256+127
512 ≤ value ≤ 512+127
768 ≤ value ≤ 768+127
128 ≤ value ≤ 128+31
256 ≤ value ≤ 256+63
Effective Value
0 ≤ value ≤ 127
0 ≤ value ≤ 31
0 ≤ value ≤ 63
AT32UC3C
319
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