ATSAM3U-EK Atmel, ATSAM3U-EK Datasheet - Page 362

• Manufacturer Part Number: ATSAM3U-EK
• Description: KIT EVAL FOR AT91SAM3U CORTEX
• Manufacturer: Atmel
• Type: MCUr

Specifications of ATSAM3U-EK

• Contents: Board
• Processor To Be Evaluated: SAM3U
• Data Bus Width: 32 bit
• Interface Type: RS-232, USB
• Operating Supply Voltage: 3 V
• Silicon Manufacturer: Atmel
• Core Architecture: ARM
• Core Sub-architecture: Cortex - M3
• Silicon Core Number: SAM3U4E
• Silicon Family Name: SAM3U
• Kit Contents: Board CD Docs
• Rohs Compliant: Yes
• For Use With/related Products: AT91SAM3U
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 25-8. READ_MODE = 1: Data is sampled by SMC before the rising edge of NRD
25.10.2.2
Figure 25-9. READ_MODE = 0: Data is sampled by SMC before the rising edge of NCS
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362
SAM3U Series
SAM3U Series
Read is Controlled by NCS (READ_MODE = 0)
NBS0,NBS1,
A0, A1
NBS0,NBS1,
A0, A1
D[15:0]
D[15:0]
A[23:2]
A[23:2]
MCK
MCK
NRD
NRD
NCS
NCS
Figure 25-9
NCS signal and remains valid until the rising edge of NCS. Data must be sampled when NCS is
raised. In that case, the READ_MODE must be set to 0 (read is controlled by NCS): the SMC
internally samples the data on the rising edge of Master Clock that generates the rising edge of
NCS, whatever the programmed waveform of NRD may be.
shows the typical read cycle. The read data is valid t
t
t
PACC
PACC
Data Sampling
Data Sampling
PACC
after the falling edge of the
6430D–ATARM–25-Mar-11
6430D–ATARM–25-Mar-11