ATSAM3U-EK Atmel, ATSAM3U-EK Datasheet - Page 376

• 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 25-23. Write Access with NWAIT Assertion in Frozen Mode (EXNW_MODE = 10)
376
376
internally synchronized
NBS0, NBS1,
A0,A1
NWAIT signal
SAM3U Series
SAM3U Series
D[15:0]
NWAIT
A [23:2]
NWE
MCK
NCS
6
The assertion of the NWAIT signal outside the expected period is ignored as illustrated in
25-24.
4
5
4
3
3
2
1
2
Write cycle
EXNW_MODE = 10 (Frozen)
WRITE_MODE = 1 (NWE_controlled)
NWE_PULSE = 5
NCS_WR_PULSE = 7
1
2
FROZEN STATE
1
2
1
2
1
0
0
6430D–ATARM–25-Mar-11
6430D–ATARM–25-Mar-11
Figure