AT32UC3C1512C Automotive Atmel Corporation, AT32UC3C1512C Automotive Datasheet - Page 341

• Manufacturer Part Number: AT32UC3C1512C Automotive
• Manufacturer: Atmel Corporation

18.7.2
Register Name:
Access Type:
Offset:
Reset Value:
• NCSRDPULSE: NCS Pulse Length in READ Access
• NRDPULSE: NRD Pulse Length
• NCSWRPULSE: NCS Pulse Length in WRITE Access
• NWEPULSE: NWE Pulse Length
9166C–AVR-08/11
31
23
15
–
–
–
7
–
In standard read access, the NCS signal pulse length is defined as:
The NCS pulse length must be at least one clock cycle.
In page mode read access, the NCSRDPULSE field defines the duration of the first access to one page.
In standard read access, the NRD signal pulse length is defined in clock cycles as:
The NRD pulse length must be at least one clock cycle.
In page mode read access, the NRDPULSE field defines the duration of the subsequent accesses in the page.
In write access, the NCS signal pulse length is defined as:
The NCS pulse length must be at least one clock cycle.
The NWE signal pulse length is defined as:
The NWE pulse length must be at least one clock cycle.
Pulse Register
NCS Pulse Length in write access
NCS Pulse Length in read access
30
22
14
6
PULSE
Read/Write
0x04 + CS_number*0x10
0x01010101
NWE Pulse Length
NRD Pulse Length
29
21
13
5
=
=
(
(
256 NWEPULSE 6 [ ]
256
=
=
(
(
×
×
256 NCSWRPULSE 6 [ ]
256 NCSRDPULSE 6 [ ]
28
20
12
4
NRDPULSE 6 [ ]
×
×
NCSWRPULSE
NCSRDPULSE
NWEPULSE
NRDPULSE
27
19
11
+
+
3
NRDPULSE 5:0
NWEPULSE 5:0
+
+
NCSRDPULSE 5:0
NCSWRPULSE 5:0
[
[
26
18
10
2
]
]
) clock cycles
) clock cycles
[
[
]
]
) clock cycles
) clock cycles
25
17
9
1
AT32UC3C
24
16
8
0
341