AT32UC3C2512C Automotive Atmel Corporation, AT32UC3C2512C Automotive Datasheet - Page 315
AT32UC3C2512C Automotive
Manufacturer Part Number
AT32UC3C2512C Automotive
Description
Manufacturer
Atmel Corporation
Datasheets
1.AT90CAN128_AUTOMOTIVE.pdf
(225 pages)
2.AT32UC3C0512C_AUTOMOTIVE.pdf
(1312 pages)
3.AT32UC3C0512C_AUTOMOTIVE.pdf
(107 pages)
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18.6.4.3
18.6.4.4
9166C–AVR-08/11
Write waveforms
NCS waveforms
•NWE waveforms
Figure 18-10. READMODE = 0: Data Is Sampled by SMC Before the Rising Edge of NCS
The write protocol is similar to the read protocol. It is depicted in
write cycle starts with the address setting on the memory address bus.
The NWE signal is characterized by a setup timing, a pulse width and a hold timing.
The NWE waveforms apply to all byte-write lines in byte write access mode: NWR0 to NWR3.
The NCS signal waveforms in write operation are not the same that those applied in read opera-
tions, but are separately defined.
1. NWESETUP: the NWE setup time is defined as the setup of address and data before
2. NWEPULSE: the NWE pulse length is the time between NWE falling edge and NWE
3. NWEHOLD: the NWE hold time is defined as the hold time of address and data after
1. NCSWRSETUP: the NCS setup time is defined as the setup time of address before the
2. NCSWRPULSE: the NCS pulse length is the time between NCS falling edge and NCS
3. NCSWRHOLD: the NCS hold time is defined as the hold time of address after the NCS
A[AD_MSB:2]
NBS0, NBS1,
the NWE falling edge.
rising edge.
the NWE rising edge.
NCS falling edge.
rising edge;
rising edge.
A0, A1
CLK_SMC
D[15:0]
NRD
NCS
t
PACC
Data Sampling
Figure 18-11 on page
AT32UC3C
316. The
315
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